Improvements in Printing Telegraphs.
Year: 1891

page_text: Date of Application, 21st Apr., 1891-Accepted, 22nd Aug.,
1891
Improvements in Printing Telegraphs.
We, SAMUEL RUSH LINVILLE of 3610 Walnut Street and LOUIS FREDERICK
HETTMANSPERGER, of 38 South Third Street both Citizens of the United States,
residing at the City of Philadelphia, in the County of Philadelphia and State
of Pennsylvania, Electrical Engineers, do hereby declare the nature of our
invention for IMPROVEMENTS IN PRINTING TELEGRAPHS, and in what manner
the same is to be performed to be particularly described and ascertained in and by
the following statements :-
Our invention relates in general to a novel system of printing telegraphy in
which the instruments are capable of being operated either as transmitters or
receivers by alternating currents transmitted through a single line conductor from a
source of electric energy located at a terminal station where the alternator and the
apparatus for controlling the same are preferably located, yet nevertheless, the
alternator and apparatus for controlling the same may be located in line at an
intermediate station instead of at the terminal station. The instruments have each
two type-wheels, with characters arranged in the same radial line on the peripheries
thereof.
The
Each instrument looped in a single main line conductor through said alternator
operates either as a transmitter or as a receiver without the employment of hand
switches or other devices for directing the current or changing the organization of
the instruments to adapt them for use as transmitters or receivers or vice versa.
impressions are effected by means of a local battery located at each instrument.
The location of the line battery, the alternator and the arresting devices at a
terminal station or at an intermediate station obviates the necessity and expense of
alternating devices and a line battery at each transmitter or receiver.
in
Our invention further relates to improvements in key-boards; in apparatus for
presenting the paper in page form from a continuous roll to the type-wheels; in
circuits and apparatus for shifting the type-wheels; in determining from which
type-wheel the impression is to be made; in operating the impression hammer;
releasing the paper-carriage; in unison devices and circuits for the printing
instruments and the terminal or intermediate station and in circuits and electrical
devices employed to control the alternating apparatus by means of the keys of
any transmitter or receiver connected in the main line conductor, to enable any
transmitter to send and record impressions and messages in page form, on any
instrument located in the single line simultaneously with the recording of such
messages on the instrument used as a transmitter.
Our invention consists firstly, in a printing telegraph system of a terminal or
intermediate station current alternator driven by a frictional attachment from a
suitable source or power, the movement and speed of which is regulated auto-
matically by an anchor escapement or similar device controlled by electro-magnets
responding to alternating electric impulses sent to line by the alternator. Both
terminals of the source of electric energy are first connected with a pole-changer
and the current passes then to contact springs bearing on alternating contacts on
the shaft of the alternator and from which contact springs direct the entire current
through the alternator and pole-changer, alternately and simultaneously, to earth
and to line. In a conductor between one of the terminals and the pole-changer the
coils of a neutral relay are located and these are constantly charged by a current
of the same polarity, while the alternator is in motion. The lever of the relay
closes a local circuit through its front stop and the coils of the pole-changer magnet,
thereby attracting the armature of the pole-changer lever in position to maintain
a fixed polarity in the conductors leading to the alternator while the same is sendin
g

page_text: .
alternating currents to line. In this condition the alternator runs automatically
and continuously sending alternating impulses through the coils of a polarized relay
for closing the circuit of a local battery alternately through the escapement electro-
magnets controlling the alternator, at the same time the alternating impulses in the
line traverse the coils of a neutral double contact relay and a polarized relay
located at each instrument in line and also pass through the sunflower device and
key-board of each instrument and then to earth or to line. The double contact
neutral delay directs the current of a local battery through either the printing
electro-magnet or both the type-wheel shifting and printing electro-magnets located
at each instrument in the line, and the polarized relay closes the circuit of a local
battery at each instrument, alternately through its respective contacts and the coils
of two neutral electro-magnets which control the escapement armature and pallets
of each transmitter or receiver. Each of the transmitting or receiving instruments
has two type-wheels mounted on a loose sleeve on a shaft with letters arranged in
the same radial line on both type-wheels. The keys are preferably arranged in
transverse parallel lines across the key-board, and are twice as many in number as
the characters on one type-wheel and similarly, double the number of contacts on
the sunflower device. One line of keys relates to one type-wheel and the adjacent line
of keys to the other type-wheel. Each key in one line is in electrical connection
with an adjacent key in an adjacent line, and with one division of the sunflower
device, in order that, by the depression of either of the two keys the type-wheels
may be arrested at the same position. Each alternate row of keys for one type-
wheel is connected to the line and to earth around a resistance, the other row of
keys for the other type-wheel being connected to line and to earth through said
resistance and adjacent key. When a key of the former row is depressed the line
is thereby broken and when a key in the latter row is depressed the line
to the former is interrupted and diverted through a resistance to line or to earth.
While the type-wheels are in motion, the uniform alternating current passes to line
and to earth. One type-wheel is in such case normally in position to cause
impressions to be recorded. When any of the keys relating to this type-wheel is
depressed it breaks the line current, instantly breaking the circuit through the coils
of the neutral relay at the terminal station. This relay breaking the local circuit
through the electro-magnet of the pole-changer, causes it to reverse the current and
the alternator under these conditions, is arrested in consequence of a break in the
line. The neutral relay contact lever at each instrument impinges against its back
contact and closes the printing circuit through the coils of the printing magnet to
effect an impression on the type-wheel normally in position. When any of the keys
relating to the other type-wheel are depressed the line current is broken thereby to
the adjacent key connected therewith and directed through a resistance which so
reduces the current in the coils of the relay at the terminal station that its armature
suddenly falls back, breaking the circuit through the pole-changer, thereby
reversing the currents in the line, and causing the alternator and the type-wheels to
be arrested in consequence of the change of polarity in a weak line current. The
neutral relay lever at each instrument will now close the printing circuit through
its front contact, first through the shifting electro-magnet to shift the type-wheels
into such a position that the other of said wheels may be permitted to record
impressions, and secondly, near the termination of the movement of the type-wheel
and by means of circuit closing devices actuated by the lever of the shifting magnet,
the printing circuit will be closed automatically in parallel circuit through the coils
of both the shifting electro-magnet and the printing electro-magnet, to effect an
impression from the type-wheel. After the impression has been made, an
interrupter breaks the circuits by the first forward movement of the type-wheels
and a spring immediately restores the type-wheels to their normal position.
Our invention consists secondly, in the circuits and electrical and mechanical
devires for effecting the unison of the terminal or intermediate station alternator
and the respective instruments connected in circuit therewith and for simultaneously
releasing the unison devices,

page_text: Our invention consists thirdly, in the peculiar arrangement and organization of
the key-board, keys, contacts and circuits for effecting the different conditions of
line current; in the construction of the paper carriage and impression devices, in the
electrical and mechanical devices employed, in releasing the paper carriage at any
point in its excursion, and in apparatus for feeding the paper and for operating the
impression hammer.
Our invention consists fourthly, of numerous details in electrical devices, circuits
and mechanisms as hereinafter fully described and pointed out in the claims.
Telegraph instruments such as are comprised in the present system will operate
either as transmitters or receivers without modification and may be constructed and
arranged to operate as receivers only, by omitting the sunflower device and key-board,
the conductor being connected to ground or to line through a polarized relay
or through the electro-magnets controlling directly a polarized escapement
armature.
The nature and particular characteristic features of our invention will be more
fully understood from the following description taken in connection with the
accompanying drawings forming part hereof; and in which
Figure 1, is a longitudinal section of a combined transmitting and receiving
instrument embodying the particular features of our invention, showing a key-
board. mechanism for rotating the type-wheel shaft, an escapement, sunflower device,
printing mechanism and a paper-carriage.
Fig. 2 is a top or plan view of the upper portion of the housing of the
instrument showing the type-wheel shaft, two type-wheels, mechanism for shifting
and inking said type-wheels, a unison latch and a releasing device employed in all
the instruments.
Fig. 3, is a top or plan view partly in section of a combined transmitter and
receiver showing the escapement, shifting and printing magnets and devices for
advancing and releasing the paper-carriage.
Fig. 4 is a vertical section on the liner, r, of Fig. 1 showing in detail the
construction of a combined transmitting and receiving instrument.
Fig. 5 is a rear elevation of the instrument showing the printing mechanism, a
track or rail, a roller for guiding the paper-carriage, a bumper for a toggle-lever
adapted to cause the paper to be fed between lines and a weight for returning the
paper carriage to its normal position.
Fig. 6 is a rear elevation of a paper carriage provided with two feed rollers and
showing at the left hand side thereof the mechanism for feeding the paper between
lines.
Fig. 7 is a perspective view of the printing devices, mechanisms for releasing the
paper carriage and the unison latch.
Fig. 8 is an elevational view of the cams for actuating the printing hammer.
Fig. 9, is an elevation of a modified form of paper carriage provided with two
feed rollers located above the type wheels and showing also at the left mechanism
for feeding the paper between lines.
Fig O is an end elevation showing the paper roller, feed rollers and feed
mechanism.
Fig. 11 is a diagrammatic view of an alternating station showing a single line
main circuit having a polarized relay, an alternator, a pole-changer, a relay and a
main battery interposed therein and also showing local circuits for controlling the
escapement, unison devices and pole-changer magnet.
Fig. 12 is a diagrammatic view of a transmitting instrument showing a key-
board, resistance coil, sunflower, pulsator, escapement, polarized relay, a neutral
relay, printing and shifting magnets, and the circuits and batteries for actuating
and controlling the same.
Fig. 13 is a diagrammatic view of a terminal station showing modifications of
the devices and circuits of Fig. 9, and also showing at the lower portion thereof an
auxiliary battery adapted to increase the strength of the line current at the
transmitting instrument.

page_text: Fig. 14 is a diagrammatic view of the parts of a transmitting instrument showing
a modified key-board, and also a relay for effecting a short break in the line, when
certain keys are depressed prior to closing the line through a resistance.
Fig. 15 is a diagrammatic view of a terminal station, showing a detent magnet,
an alternator, a unison-device, a relay and circuits for actuating and controlling
the same.
Fig. 16 is a similar view of the parts of a transmitting instrument showing
devices for cutting out parts of the resistance included in the line by certain keys;
and
Fig. 17 is a diagrammatic view of the parts of a transmitting instrument having
an electro magnetic interrupter included in the local printing circuit.
The combined transmitter and receiver consists essentially of a base A, in which
the keys and electrical connections with the sunflower segments and the line are
located, and which supports at its rear end a table a, carrying the impression and
feeding devices, and on top the frame plates a' and a², containing the drum aⓇ and
train of gearing a³, driven by a weight al, for actuating the type-wheel shaft b,
and the escapement and sunflower shaft c, which are geared to one another by a
shaft and mitre-gearing 6', so as to revolve synchronously.
The frame plates a¹ and a³, are separated by distance plates a³ and a', a back
plate a, and glass plates a, are inserted in front and on top to exclude dust and to
render the internal parts of an instrument accessible at any time.
The type-wheel shaft b, carries a sleeve, to which are secured two type-
wheels B and B', having letters and characters arranged in similar radial lines on
the peripheries thereof. The sleevo 62, is free to move longitudinally about one
fourth of an inch on the shaft b, but is prevented from turning on this shaft by a
fixed cross-bar 63, secured to the shaft b, and carrying two pins, which pass
neatly or snugly through holes in the type-wheels B and B', on which the type-
wheels freely slide. A spiral spring 6, attached to the cross-arm 63, and the type-
wheel B, permits longitudinal motion of the type-wheels, and constantly tends to
rotate the type-wheels in their normal condition, thereby preventing any variation
from their correct position that might result from enlargement of the holes through
which the pins b*, pass.
The type-wheel B, is shown in normal position for delivering impressions. To
place the type-wheel B', in position to deliver impressions a shifting device is
employed, which consists of the rod d, sliding in supports secured to the plate a*,
extending between the side plates a' and a². This rod carries a fixed arm d, which
engages loosely in a groove 6, in the sleeve &, mounted on the type-wheel shaft b.
The lever, of the armature d³, and magnet D, is pivoted at d', to the side-
frame a³, and forked at its upper end to embrace the rod d, to which it is pivotally
attached. The electro-magnet D, is supported on the base A, of the instrument.
When the magnet is energized, its armature d³, is attracted and the type-wheel B',
is shifted into the same vertical plane normally occupied by the type-wheel B, and
is immediately restored to its previous position by the retracting spring &, after
the impression has been taken and the depressed key has been released, thereby
closing the line circuit and causing the type-wheels to again revolve. The first
movement of the type-wheel shaft, breaks the local printing circuit by means of
the interruptor k.
An ink roller e, bearing on the periphery of the type-wheels freely turns on a
rod e, between arms e, hinged to the standards es. The rod e¹, permits of the
longitudinal motion of the ink roller when moved laterally by the type-wheels.
The pressure of the ink-roller e, on the type-wheels B and B', may be adjusted in
any suitable manner. The type-wheel shaft b, carries a cam f, which is adjusted
thercon relatively to the releasing space of the type-wheels. This cam f, depresses,
once in each revolution the vertical rod f', which vibrates the releasing device
hereinafter described. The type-wheel shaft b, also carries a unison spirally
threaded screw g, into the grooves of which, the right angular extremity 9', of the
unison latch g², engages in a well understood manner. The unison latch g³, is pivoted

page_text: vertically and laterally at its other extremity to a trunnion 9³, and is solicited
downwards and laterally by the helical spring g'. This latch g³, arrests the type-
wheel shaft b, at the unison position when the right angular extremity of the
latch, impinges against the termination of the unison screw. The unison latch g³,
is released from the screw g, through the instrumentality of the extension h, of the
printing magnet lever, each time an impression is given or recorded as will be
hereinafter more fully described.
The sunflower shaft r, is pivotally supported in position concentrically with the
table of contacts in the sunflower C, and carries the escape-wheel i, the local
circuit interrupting wheel k, and an arm l, which once in each revolution, at the
unison position separates the insulating springs 1 and 2, thereby interrupting at
this position only the local circuit which is employed to energize the shifting
magnet D.
The number of teeth in the escape-wheel i, is equal to half the number of
divisions on a type-wheel B or B', one division for either type-wheel being positioned
radially by each vibratory movement of the escapement armature lever and
pallets i.
The armature, may be a polarized armature vibrated between the poles or
electro-magnets I, by alternating line currents, or a neutral armature vibrated by
the current of a local battery closed alternately through the respective electro-
magnets by the contacts of a polarized relay M, included in the line circuit.
The ratchet-wheel k, for interrupting the local circuit has as many bevelled
teeth as there are divisions on each of the type-wheels or some multiple thereof.
The right angular lever k', pivoted at 2, and solicited by the helical spring k³, has
a bevelled projection k*, which rides over the bevelled teeth of the ratchet-wheel k,
by the revolution of the shaft c, causing the insulated contact point **, thereon, to
rapidly make and break contact with the fixed and insulated contact point ko, and
when the shaft c, is arrested by the pallets, the projection k, of the arm k',
drops into one of the teeth on the interrupting-wheel k, permitting the insulated
contact points and k, to close the portion of the local circuit hereinafter
described.
The sunflower C, consists of insulated contact segments c¹, equal in number to
the divisions on each type-wheel. A hub c², insulated from the shaft c, carries an
arm c³, to which is secured a contact spring or brush 4, divided at its extremity so
as to overlap the insulating strips, separating any two segments, and thereby
preventing any interruption of the line circuit as the contact spring sweeps over
the segments. The line is conducted to the hub c³, by means of a hub c, and
spring c, bearing thereon and supported at its other extremity on an insulated
bearing. Each segment of the sunflower is connected by a conductor 10, to one of
the springs n, which are attached to a bar of insulating material n', secured to the
base n³, preferably made of wood, vulcanite or other suitable insulating material.
The keys and their contact springs are preferably supported as shown by the
removable key-board N, but we do not limit ourselves to this particular arrange-
ment of the keys and contacts shown, since numerous modifications of construction
and arrangement of the parts for effecting the same result may be substituted
therefor.
There are three transverse ranges of keys, each range consisting of two rows of
keys N' and N2, with ten keys in each row, making thirty keys for each type-wheel
and corresponding in number with the divisions on said wheels. The first, third
and fifth transverse rows N¹ relate to the type-wheel B, normally in position for
printing; and the second, fourth and sixth rows N2, relate to the type-wheel B¹,
which must be shifted into position to deliver its impression on the same line with
the impression given by the type-wheel B. Any two adjacent keys N' and N', in
the respective odd and even numbered rows are so associated by their contacts and
circuits as to arrest the type-wheels by means hereinafter described, at the same
radial position, but the circuits and devices are such that when the type-wheels are
arrested by the depression of a key N', in the first, third or fifth row, an

page_text: impression is given by the wheel B, and when arrested by the depression of a
key N', on the second, fourth or sixth row, the type-wheel B', is shifted into the
position to give an impression in the position previously occupied by the type-
wheel B.
The characters on the type-wheel B, are presented in regular order, starting
from the unison position (indicated by the first key n", on the left in the first row)
as the keys are successively depressed in regular order from left to right in each
range of double rows of keys, that is, the odd rows of keys passing successively
from left to right in rows, will give all the positions for the type-wheel B; and the
even rows of keys will similarly give all the positions for the type-wheel B¹, two
adjacent keys as N' and N' in any range, indicating the same segment c³, of the
sunflower and the same radial position of both type wheels. With this explanation
the circuits controlled by the keys, their functions and the devices associated
therewith will be readily understood when the circuits are described in detail by
reference to the diagram Figs. 9 to 14, and the detail connections shown in
Fig. 10.
The paper carriage O (Figs. 1 and 6) consists of two side-bars between which
are secured the rack-bar o strut o, which forms the guide-rail for the paper
carriage, a bar o, to guide the sheet of paper and a split-bar o, between the upper
ends of the side-bars o. There are also grooved guide-bars o³, on the inner side of
the side-bars o, to hold the edges of the sheet of paper o°. The carriage runs on
two wheels o, supported on a track o, secured to the rear end of the base A.
Below the track, are two safety-wheels o³, to prevent the carriage from being
derailed.
The end of
The strut o, forming the upper guide rail, bears on a single grooved wheel o",
which is pivoted to a bracket p, rising from the post p', which supports the
impression hammer p³, and the lever p³, that actuates the same. By employing
only one wheel for the guide-rail o³, the necessity of extending this rail beyond
the side bars o, of the paper-carriage, is obviated. The paper roller o", the feed
roller o, and the pressure roller o", are journalled in the side-bars o.
the feed roller journal carries a ratchet-wheel o", in which engages the pawl o",
pivotally attached to the upper end of a sliding bar o moving in a guide o",
fastened to the side-bar o. The lower end of the sliding-bar o is hinged at o¹8,
to one arm of a toggle-lever o", the other arm of which is hinged to the side-bar
at 20. A spring o, maintains the pawls o in contact with the ratchet wheel o
and a helical spring o", draws back the sliding bar o", and thereby deflects the
toggle-lever o When the paper-carriage is released as hereinafter described a
cord o³, solicited by a weight o", causes the carriage to run backwards and when
it nears the end of its excursion the deflected toggle-levers o", strike against a
fixed arm o", causing the toggle-levers to assume a nearly vertical position, thereby
forcing the sliding-bar o, upwards and by means of the pawl o, revolving the
ratchet wheel o", and the feed-roller o", so as to feed the paper, the space between
two lines of printing. The toggle jointed levers possess many advantages over
cams or inclined ways for effecting this result since the power exerted by the toggle
jointed levers increases as the momentum of the paper-carriage diminishes.
In Figs. 9 and 10, is illustrated a paper carriage having the feed rollers o
and o, located above the type-wheels B and B', so as to support the paper in
proper position in front of said wheels for printing thereon. The means to feed
the paper between lines consists of the feed rollers o" and o¹. The roller o¹
being provided with a ratchet-wheel o", engaging with a sliding pawl o¹³, pivoted
to a guide-bar o which is provided at its lower extremity with a rack o". A
toothed segment o", provided with an arm o, meshes with the rack o", and which
segment and its arm are pivoted to the bracket o, of the side-bar o.
The paper
carriage O, is released and caused to return to its initial position by means of a
weight or spring. When the return of the paper carriage O, is nearly completed,
the arm of the segment o, strikes an adjustable device o", on the fixed
arm o, which causes the segment o, to partially rotate, thereby impelling the

page_text: sliding-bar o*, and pawl o", upward and revolving the ratchet-wheel o" and feed
roller o, thereby causing the paper to be fed between lines. The pawl ol, and
segmento, gradually return to their normal position by means of the spring o",
while the paper carriage is advancing without disturbing the position of the paper
or of the feed rollers.
The magnet P, by which the paper-carriage and the impression and releasing
devices are controlled is attached to the table A, Figs. 1, 3, 5 and 7. Its
armature p, is attached to the lever p, turning on trunnions p, pivoted in the
table A, and the bracket p'. The lever, carries at its extremity a pawl p³, with
a spring, which causes the pawl p³, to engage with the teeth of the rack o'.
When the magnet P, is energized the armature p, is attracted and the pawl p*,
engages a tooth of the rack o¹, and when the local circuit through the magnet is
broken the retracting spring po, causes the. lever p, to move the paper carriage
forward one notch, to space between letters of the printing. The carriage is
prevented from taking a retrograde movement by a detent p", when the electro-
magnet P, attracts its armature.
To a post p¹, supported by the table A, is secured a horizontal pipe p¹², through
which the rod pl, carrying the printing hammer p², is guided. The rod is
surrounded by a helical spring p, which causes the return movement of the
rod p. In a bracket p", attached to the post p', a lever p³ is pivoted, forked at
its upper end to engage the rod p, and having at its lower end a reciprocating
pawl p, pivoted thereto and arranged so that the rear extremity p", of the pawl
plays between shoulders. Another similar reciprocating pawl p¹³, is arranged so
as to be held rigidly by a spring p", against a shoulder po, during the downward
motion of an arm p", attached to the rock-shaft p", turning in supports 13.
Another arm p", on the same rock-shaft is connected by a line p, to the
lever 7.
When the electro-magnet P, is energized the lever po, rocks the shaft p³, and
the pawl, strikes and passes the pawl p, causing a movement of the forked
lever p³, and thereby effecting a quick blow of the printing hammer p³, which
instantly recoils by the action of the helical spring p", on the rod. When the
local circuit through the electro-magnet P, is interrupted the lever ps, recoils rocking
the shaft p, in a reverse direction, whereupon the reciprocating pawls being
pivoted and free to revolve during the return movement pass one another and are
again in a position to engage by means of the spring p", attached to the pawl p18,
when the magnet P, is energized.
The mechanism for releasing the paper carriage at any point in its excursion,
will now be described.
A cam f, secured to the type-wheel shaft 6, once in cach revolution of the shaft
strikes and depresses a rod f, sliding freely and vertically in guides attached to the
rear plate a, of the framework of the instrument. This rod f', abuts against the
shorter arm of the lever f³, pivoted by the trunnion, to supports secured to
the plate a. The longer arm of the lever f³, carries at its extremity a link,
supporting a strut f, one end of which rises into the path of a projection f®,
fixed to the underside of the lever, and falls clear of the same each time the
cam f, on the type-wheel shaft b, passes over the rod f'. The other end of the
strut, is connected by a universal joint to the short arm of the bell-crank
lever/", pivoted by a stud screw to the table a. The long arm of this bell-crank
lever, bears against the short arm 8, of a bent lever f, also pivoted by a stud-
screw to the table a, and the extremity of this lever terminates in a cross arm, in
which are fixed two pins f" and ", which engage the pawl p, and the detent p".
These pins are held out of contact with the pawl and detent by the spring "
A key n³, called the releasing key is connected by a conductor to a division of
the sunflower device indicating a blank division on both type-wheels, and the cam,
is so adjusted on the type-wheel shaft b, that when the type-wheels are arrested by
the depression of the key, the cam f, hangs vertically and stops directly over
the sliding rod f, slightly depressing the same. This causes the lever f³, to lift

page_text: and firmly hold the strut f, in the path of the projection, and since the electro-
magnet P, is now energized, by the circuits to be described, its armature p*, is
attracted causing the projection fo, on the lever p, to collide with the strut f
thereby actuating the bell-crank lever f, and curved lever . The pins f10
and consequently disengage the pawl p³, and the detent p", from the rack o', and
retain them in this position while the key n³, is depressed, permitting the paper-
carriages of all the instruments looped in the line to return to their initial position
by the weight o, from any point in their excursion, thus enabling any operator on
a long line in which numerous instruments may be included to simultaneously bring
the
paper-carriages of all the instruments to unison from any point in the excursion
of the carriages O. This result cannot be effected by an automatic releasing device
such as heretofore employed.
A description of the electric circuits and devices included therein, will now be
given.
The line battery Q (Fig. 11) may be any suitable source of electric energy
located at a terminal station and with transmitting and receiving instruments looped
in the line at intermediate points. All the apparatus for alternating the currents
of the battery through the line, and for arresting the alternator is preferably
located at the station with the line battery and this station may be at any point in
the line and connected to earth. From one electrode, say the positive, of the line
battery a conductor 1, is connected to the coils of a relay U, and from the same,
a conductor 2 is led to one contact spring v, of a pole-changer V. The other
electrode, is connected by a conductor 3, directly to the other contact spring v³, of
the pole-changer V. From the two back contacts and v³, electrically connected,
a conductor 4 is led to the two contact springs t and t', of the alternator T, an 1
from the lever », of the pole-changer V, another conductor 5, is connected to the
two contact springs t' and t³, of said alternator T. The line spring to, and earth
spring, bear upon hubs to and t', electrically connected with discs comprising
alternate contacts and insulations.
The two inner springs t¹ and t³, bear on alternate contacts and insulations on the
discs and to, and these contacts and insulations alternate with those on the
discs t and t¹, and are in electrical connection each with the adjacent outer discs t
and t, but insulated from one another by the discs ", of insulating material. It
is evident, therefore, that as the discs revolve presenting alternately two contacts
on the outer discs, and two contacts on the inner discs, to their respective contact
springs, the direction of the current from the line battery, will be alternately to
line and to earth. When the alternator in the line is at an intermediate station,
the earth springt, is connected with a line running in an opposite direction to the
line connected with the spring to, and the same effects are thereby produced as
when the alternator T, is located as illustrated in Fig. 11, in the line at the terminal
station.
The current in the line passes by the conductor 6 to the coils of a polarized
relay W, through the same and then by the line 7. The relay U closes through
its front contact u, and through the coils of the pole-changer magnet V, the
circuit 20, of the local battery q, and through its back contact u¹, the coils of
the unison magnet S, and the circuit 20 and 21 of the same local battery.
The polarized relay W, closes by one contact w, the circuit 23 and 24 of a local
battery q', through the coils of the escapement magnet R, and by its other contact w³,
the circuit 25 and 24 of the same local battery q', and through the coils of the escape-
ment magnet R¹. As the currents in the line alternate, the armature r, of the
escapement magnets R and R', vibrates, thereby actuating the pallets r³, between
the teeth of the escape-wheel, on the shaft, of the alternator T, without
arresting said shaft. The armature r, will continue to vibrate automatically as
long as alternating currents are maintained in the line, but as soon as the circuit of
the pole-changer V, is broken at the front contact u, of the relay U, the pole-
changer armature, leaves the poles of said magnet, and its lever falls away,
reversing the direction of the current to the alternator and to line. This arrests

page_text: the vibration of the armature r, of the escapement magnets R and R³, and one or
the other of the pallets r¹, contact with a tooth in the escape-wheel. When the
alternator T, is arrested the levers of all the polarized relays at the respective
instruments in line are also arrested and all the type-wheels of such instruments
are consequently arrested in unison at the letter indicated by the key depressed at
the transmitter, and the relay tongue u³, breaks from its front contact, whether a
key breaking the line or a key closing the line circuit through a resistance is
depressed, or whether the latter key, causes the line to be interrupted for a very
short interval before closing the line through a resistance. The line circuit passes
from the polarized relay W, by the conductor 7 through the coils of a neutral
relay X, with front and back contacts 3 and 4, then by a conductor 8, to a
polarized relay M, through the coils of its magnet by the conductor 9, to the sun-
flower brush e, and from the insulated hub c, through the arm c³ and brush c', io
the contacts c¹, as the brush c, sweeps over the same. The polarized relay M,
closes the circuit of a local battery 2, through the escapement magnet I, by its
tongue m³, and contact m', and through the escapement magnet I', by its tongue m²,
and the contact m. Each contact c' of the sunflower is connected by a conductor 10,
to the spring n, in the base of the instrument. The spring n, connects with the
insulated contact piece nt, with which the spring n³, on a key N³, in an even row of
keys contacts. The spring nº, on the opposite side of this key N³, is electrically
connected with the spring no, and the course of the current is through these
springs no and no, to the insulated contact n'. The spring n³, on an adjacent key N',
in an odd numbered row of keys is in the same circuit, and the spring n³, contacts
with the insulated contact n', and the opposite end of the spring n³, contacts with a
bar conductor n³, which is connected by the conductor 11 to earth when one trans-
mitter only is in line, but to line and the other transmitters when more than one is
in line and then to earth. When a key N³, is depressed, the springs nº and no,
break contact and thereby interrupt the line when the sunflower brush c', contacts
with the segment c¹, connected electrically with the key depressed. The con-
ductors 12 are connected to the contact pieces n', and the springs n¹º, which when
depressed, contact with a bar n", connected by the conductor 13, to a resistance R³,
and then by the conductor 14, to earth. It follows that when a key in an even
numbered row of keys is depressed, it breaks the line to the odd numbered row, and
at the same time the circuit of the line is closed through the resistance R³, when
the sunflower-brush e, contacts with the segment c', connected electrically with
this key. To prevent the current passing from the springs no, back to line, through
other ranges of keys, said springs are insulated from one another and an insulation
on the lower end of the key N', presses on the spring 210, until contact is made
with the conductor bar n¹³.
When a key is released the uniform line current acts to attract the armature of
the relay U, at the terminal station and the instruments run with a full current
until another key is depressed. In operating the keys N' and N³, it is necessary
for rapid work, to press each succeeding key, before the last one pressed is released,
otherwise the type-wheels of all the instruments will run to unison and be arrested
in that position.
The operation of printing is as follows:-
All the instruments being at unison with one another and with the alternator T,
and held by the unison latches, the unison key n", is depressed by the operator
at any instrument in line. This breaks the line circuit through the coils of the
relay U, whereupon its lever ², breaks at its front contact u, the local circuit 20,
through the pole-changer magnet V, and closes at its back contact u², the local
circuit of the battery g, through the unison magnet S, which consequently attracts
its armatures, and by the rod &, releases the unison latch s, of the alternator T,
while at the same time, the detent &, on the lever s³, holds the alternator shaft,
in this position as long as the unison key n", remains depressed. Instead of closing
the local circuit of the battery g, through the back contact u³, of the relay U, the
B

page_text: circuit of a battery 9', may be employed and closed by the contact-lever u³, and
the contact u, through the coils of the unison-magnet S.
At each instrument in line, the neutral relay lever a, contacts with its back-
stop, closing the local circuit of the battery g, from one electrode through the
conductor 28, to the insulated contacts k and k³, of the interrupter now in contact,
then by a conductor 29, to the lever, of the relay X, then through its back
stop, by the conductor 30, to the coils of the printing magnet P, and the
conductor 31, to the other electrode of the battery. On the extremity of the
lever po, of the printing magnet P, an arm h, is fixed, which extends into the instru-
ment, (Figs. 3 and 7,) where it contacts with a bell-crank lever h³, pivotally
attached to the rear plate a³ of the instrument. This bell-crank ¹, supports a
vertical rod, moving freely in guides attached to the rear plate a³, and abuts
against the underside of the unison latch g. When the circuit last described is
closed the armature p', is attracted and the bar h, on the end of the lever p, strikes
one arm of the bell-crank lever ', and the rod h³, and consequently releases the
unison latch g², simultaneously with the release of the latch s, at the alternator T.
The operator now depresses a key N', say in the odd numbered range relating to
the type-wheel B, and releases the unison key n", whereupon the line circuit 7,
being closed, alternating pulsations cause the type-wheels B and B', to rotate
rapidly until the sunflower brush c, contacts with a broken line segment c¹,
electrically connected with the key depressed. The projection *, of the interrupter
arm k, again drops into a notch in its ratchet-wheel k, closing the insulated con-
tacts and k, and the relay tongue x, falls against the back stop **, thereby
closing the circuit last described. The armature 2, being attracted, the lever p³,
of the printing magnet P, is drawn forward, causing the reciprocating pawls pl
and p to collide and pass one another as previously described, thereby effecting a
sudden blow of the printing hammer p³, against the paper o, which causes an
impression of the character presented on the type-wheel by the key depressed.
The pawl p, also engages with another tooth of the rack o'. When the local
circuit is interrupted at the relay X, in consequence of the release of this key, the
line is closed. The type-wheels consequently begin to revolve and the circuit of the
battery q², through the printing magnet P, is broken at the contacts and k
the interrupter k². The retracting spring po, moves the lever p³, thus causing the
carriage O, to advance one step, to space between letters of the printing, and at
the same time by the intervention of the bar p, and rock-shaft p", the reciprocating
pawls ple and p, pass one another in the manner herein before described, and are in
a position to repeat the operation.
of
If a key N', in an even numbered row be depressed, the relay U, at the terminal
or intermediate station again breaks the line current at its front contact 26, and also
causes the unison latch s, to be lifted (a result which must occur at the impression
of every letter,) and the alternator T, and consequently the type-wheels B and B',
of all instruments in line are arrested at the indicated position. There is now
a weak current in line, and the neutral relay lever a, contacts with its front
stop, closing the circuit of the printing local battery q², from one electrode by
the conductor 28, to the insulated contacts and, of the interrupter k', then by
the conductor 29 to the lever 2, of the relay X, then from its front contact ³,
by the conductor 32, to the insulated spring, of the unison cut-out L, (normally
closed except at the unison position,) then from the other spring ", of the cut-out L,
by the conductor 33, to the insulated arm do, on the trunnion d, of the lever d³, of
the shifting magnet D. This magnet D, is of much greater resistance than the
printing magnet P. The insulated arm do, is in electrical contact with an insulated
spring d', which completes the circuit by the conductor 34 to a resistance R³, and
to the coils of the shifting magnet D, and then by the conductors 35 and 31 to the
other electrode of the battery . Just before the shifting lever d², has com-
pleted its full stroke, the arm d, contacts also with the insulated spring d", which
closes the circuit in parallel through the coils of the printing 'magnet P, by the

page_text: conductors 36 and 31, to the last named electrode of the battery. The printing
magnet P, being of lower resistance than the magnet D, takes the stronger
portion of the divided current, to effect the printing, as previously described,
while the portion through the coils of the shifting magnet D, is still sufficient,
when the armature d³, is near the poles of the magnet D, to hold the type-
wheel B', in position to deliver the impression on the same line, with the impression
previously given by the type-wheel B. Two or three impressions can evidently be
taken, alternately, at the same position of the type-wheels by alternately pressing
and releasing two keys connected electrically to the same segment of the sunflower,
the keys respectively causing a break or a weak current through the line. The
alternator T, cannot move until a full current sufficient to actuate the relay U, at
the terminal or intermediate station passes over the line, and this cannot occur with
alternate breaks, and resistance in line, but the neutral relay X, which controls the
type-wheel shifting and printing devices will respond to breaks and to weak currents
in line.
The complete circuits of a system embracing a relay U, pole-changer V,
alternator T, automatic escapements R and R', and unison devices S and 8, located
at a terminal station as shown in Fig. 9 and operating with equal efficiency at any
intermediate station of a line with both terminals of the line to earth, have been fully
described.
In carrying our invention into effect, we do not wish to limit ourselves, however,
to the employment of all of the devices and apparatus illustrated in Figs. 11
and 12. The alternator T, may be a mechanical or magnetically actuated pole-
changer.
In Fig. 13 we have shown a pole-changer with its magnet V, the local circuit of
which is closed and broken by a rheotome T', on the shaft 4. A relay U, is
employed, as in Fig. 11, which closes at its front contact u, the circuit of a local
battery, through the coils of a detent magnet Z. The relay U, breaks the circuit
at its front contact u, when the line is broken or when the resistance is introduced
by the keys of a transmitter and the circuit through the electro-magnet Z³, is
thereupon interrupted. The detent lever a, solicited by its retracting spring 2³,
engages a tooth, of the ratchet-wheel z, on the regularly speeded shaft, driven by
frictional contact with a pulley, actuated by any suitable power, and the shaft,
rheotome T', and pole-changer V, are consequently arrested; the back contact u¹,
of the relay U, closes the local circuit of the battery g, through the coils of the
unison magnet S, as hereinbefore described.
In Fig. 13, one electrode of the line battery Q, is connected through the coils of
the relay magnet U, to a contact spring v, of the pole-changer V. The other
electrode is connected to the contact v. The contacts and ³, are connected to
earth and the lever, is connected with the line 7.
When the line circuit is closed, the armature of the lever u³, is attracted closing
by the front contact u, the local circuit of the battery 9, through the coils of the
detent magnet Z. The armature 23, of the detent-magnet Z, is consequently
attracted, thereby retaining the detent-lever 2, out of contact with the ratchet-
wheel and the shaft, and rheotome T', revolve continuously at uniform speeds.
The circuit of a local battery 95, is closed and broken successively by the
rheotome T¹, through the pole-changer magnet V, causing rapid vibrations of the
lever t, and consequently rapid alternating currents from the battery Q, are sent
to line. When a key at any transmitter is depressed, the relay U, breaks the
circuit of the battery 9, through the detent magnet 72, and the lever z, and conse-
quently arrests the ratchet-wheel z, and the rheotome T¹. The rheotome T', being
arrested, the vibration of the lever v', is also arrested when a current of one polarity
is passing to line and the printing is effected as previously described. In order to
re-inforce the line current after the alternating devices have been arrested by
including a resistance in the line at any transmitter as hereinbefore described, in
Fig. 13 has been illustrated an auxiliary battery Q1, one electrode of which is
connected to the contact-lever u, of the relay U, and through the contact uº, to one

page_text: of the springs v¹; and the other electrode is connected directly to the spring v.
When the pole-changer V, is vibrating this circuit is open at the contact lever u³,
and contact us, but when the line current through the relay U, is greatly reduced,
by the introducing of a resistance at any transmitter, the lever u, falls against its
contact us, thereby closing the circuit of the battery Q', to line in parallel with the
circuit of the battery Q.
The circuits illustrated in Fig. 14 are similar to those shown in Fig. 12, with
this exception, that the polarized relay M, and the local circuit through its contacts
and the escapement magnets I and I', have been omitted. The line circuit is con-
nected by the conductor 8, to the coils of the escapement magnets I and I', and
then by the conductor 16 to the sunflower brush c, and then to line through the
sunflower and key o, as previously described. The armature, is in this case a
polarized armature and responds to alternating currents in the line.
A detent may be employed with the rotating alternator of Fig. 15 or the
vibrating pole-changer of Fig. 11, and the relay U, Fig. 11, or relay Ŭ of Fig. 15,
may be omitted, provided the coils of the detent magnet 72, be included in the
conductor of one polarity between one of the electrodes of the line battery and the
pole-changer. In this case a back contact must be provided for the lever of
the detent, to close the circuit of a local battery g, through the coils of the
unison magnet S, in a well understood manner to those skilled in electrical
.science.
It is a well known fact that a relay armature will fall from the poles of a
magnet and interrupt the circuit much quicker when there is a complete break of
the line circuit through the coils of the magnet, than when a high resistance is
introduced into the line. We take advantage of this, in order to attain greater
rapidity of operation, by including the coils of a relay Y, Fig. 14, in the con-
ductor 11, between the line contact bar nº, of the odd numbered rows of keys N',
at each transmitter in the line or to earth. The conductor from the bar n¹³, leading
to the resistance R³, is carried to the lever y, of the relay Y, and through its back
contact y', and by the conductor 13 to the resistance R², and then by the
conductor 14, back to line. Since the instruments operate by closed circuits, and
this circuit to line is always broken when any key is depressed and the brush e, of
Fig. 12, contacts with a segment c', of the sunflower clectrically connected with the
depressed key, there will be a break in the line of very short duration, followed
by the introduction of a resistance R³, into the line every time a key N³, is
depressed. During this very short interval the armature of the relay U, connected
with the conductor near the electrode of the line battery Q, will fall away, and the
line current reduced by the interposed resistance R³, will not be of sufficient
strength to cause the magnets of the relay U, to overcome the retracting spring u.
By these devices we attain rapidity and absolute certainty of action in arresting
the alternator T.
In Fig. 15, is shown a revolving alternator T, with a detent similar to that
previously described in connection with Fig. 13. In Fig. 15, the electrodes of the
line battery Q, are connected to the four interior springs of the alternator as
hereinbefore described. One outside spring connects with the line 7, and the other
outside spring is connected to earth in a similar manner as is illustrated in Fig. 11.
The relay U, is included in the conductor between one of the electrodes of the
battery Q, and the alternator T, and is consequently traversed by currents of one
polarity only. When the line current is interrupted or greatly reduced by
interposing a resistance at any transmitter, the relay U, breaks at its front
contact น
the circuit of the local battery 9, through the detent magnet Z³, and the
alternator T, is arrested as hereinbefore described.
In order to re-inforce the current on long lines, when the resistance R³, (Fig. 16)
is thrown into line, a relay Y, is inserted in the circuit of the line from the contact
bar n, by the conductor 11, to the coils of the relay Y, and then by the line 14, to
earth or to line. When a key N', is depressed, the circuit to the contact bar n³ is
broken, and the circuit of a shunt line is closed by the spring n¹³, contact-bar n¹³ >
16

page_text: spring n, and bar n", through the resistance, to earth or to line. Ine break
of circuit through the relay magnet Y, causes the lever y, to contact with its back
contact y', thereby closing a branch circuit 17 and 18, through the lever y, and
the contact y. This circuit cuts out part of the resistance R³, thereby increasing
the current in the line, and thereby ensuring greater certainty of action of the
neutral relay X.
The old and well known mechanical interrupter shown in Figs. 12, 14 and 16,
consisting of a ratchet-wheel k, mounted on the type-wheel shaft and causing the
insulated contact k³, on the lever k¹, to vibrate on the insulated contact kº, during
the rotation of said shaft, thereby interrupting the circuit of the local printing
battery 93, while the type-wheels are in motion not only causes obstruction to the
free movement of the type-wheels, but has been found to be inefficient in connection
with the local circuits and electro-magnetic devices, shown in Fig. 14.
When a key N, relating to the type-wheel B', is depressed the line 11 is
interrupted, and a very short interval intervenes before the lever y, of the magnet Y,
contacts with its back-stop y', to close the line through the resistance R. This
brief interruption of the line causes the lever u², of the relay U, at the station
where the alternating and arresting devices are located, to break contact, and when
the line is closed through the resistance R2, the magnet U, in consequence of the
weak current in line, is not sufficiently energized to overcome the tension of the
spring u. The type-wheels of all the instruments in line are consequently arrested
at a character indicated by the key N', depressed. The lever, now contacts
with its front contact 3, closing the local circuit of the battery q², through the
unison cut-out L, the shifting electro-magnet D, and in parallel circuit through the
printing electro-magnet P, thereby causing the type-wheel B¹, to be shifted into
and held in position by the current through the electro-magnet D, until the
impression is effected by means of the devices operated by the electro-magnet P.
The short interruption of the line hereinbefore mentioned permits the lever ³, of
the relay X, to impinge against its back contact x, causing the electro-magnet P,
to be briefly magnetized, thereby producing an inopportune movement of the
lever p. The mechanical interrupter k, k¹ was found to be ineffectual to obviate
this difficulty. The electro-magnet 7%, being included in the line circuit, vibrates
its armature z', and lever 2, mainly against its front contact, when alternating
currents pass on the line, thereby completely interrupting the circuit of the local
battery 9, between the conductors 28 and 29, at the back contact 2, while the type-
wheels are in motion. During the brief interval required for the lever y³, of the
relay Y, to fall to its back-stop y', the levers, of the relays X, and the lever z³,
of the electro-magnetic interrupter 2, will also impinge against their back-stops,
but the lever, recovers so quickly, in consequence of the closing of the line
through the resistance R², that the contact on the back stop a', is too brief to
allow the printing electro-magnet P, to be energized by the circuit of the local
battery q².
The mechanical interrupter, closed contact the instant the type-wheels_were
arrested, while on the contrary the lever 2³, cannot impinge against its back-
contact, before the lever y, strikes its back-stop y', which occurs after the type-
wheels are arrested; the adjusting spring 2, must retain the lever ³ in contact
with the back-stop 6, while the line is closed through the resistance R³.
We are aware that a magnetic detent has been employed at a central station to
arrest a shaft controlled by power frictionally connected and carrying an alternator,
when the coils of the magnets controlling the detent were included in the circuit of
a local battery. The circuit of this battery was closed by a sunflower device, when
a segment of the sunflower was connected by a conductor to a key of a transmitter
by which, when the key was depressed, another break in the local circuit was closed,
causing the detent magnet to attract its armature and the detent-lever to engage a
ratchet-wheel on said shaft. Such devices were employed to transmit stock
quotations from a central station and were operated by means of a local battery
circuit. Such is not our invention and we do not lay claim thereto. The apparatus

page_text: for arresting the alternating devices hereinbefore described are controlled by distant
transmitters operating through a single line circuit.
Having now particularly described and ascertained the nature and objects of our
invention, we declare that what we claim is :-
1. A printing telegraph system comprising a source of electric energy and 5
electrical and mechanical devices located at a station for alternating the polarity of
the current in a single line, transmitting and receiving instruments looped in the
line and each instrument provided with type-wheels, means at said station for
arresting the alternating devices responding to different conditions of currents, keys
in any transmitter, type-wheel shifting and impression devices and mechanical and
electrical devices responding at each instrument to a break or weak current in the
line caused by the depression of any key of said transmitter to effect the arrest of
the type-wheels at a position to present the character as indicated by the depressed
key to the impression device.
2. A printing telegraph system comprising a source of electric energy, a single i
line, electrical and mechanical devices located at a station operating to alternate
the polarity of the current in said line, transmitting and receiving instruments
looped therein and each having two type-wheels, a relay at said station in a portion
of one of the conductors between one of the electrodes and the alternator, arresting
devices located at said station in a local battery circuit and controlled by said relay
in consequence of the varying conditions of current effected either by the inter-
position of a resistance or by breaking the line by the depression of a key of a
transmitter and having such relation to said keys of the transmitter that the
alternating devices at said station and the type-wheels of all the instruments
connected in line move in unison, and mechanical and electrical devices controlled
by a double contact neutral relay at the transmitting and receiving instruments
responding to varying conditions in the line to cause a type-wheel of each instrument
to assume a position to permit of an impression being effected.
3. In a printing telegraph system, a source of electric energy at a station, a
single line, a current alternator driven by suitable power and controlled by a polar
escapement device, the electrodes connected to contact springs of said alternator, a
relay interposed between the source of electric energy and said alternator, a pole-
changer with its contacts connected to said electrodes and to the contact springs of
the alternator, a magnet controlling the pole-changer included in the circuit of a
local battery closed through one of the stops of said relay, transmitting and
receiving instruments connected in said line circuit, polarized relays in said line
circuit located at the instruments and controlling escapement devices and type-
wheels by a local battery circuit, the transmitters having keys to interpose
resistance in said lines, keys to break said lines when a key is depressed and
operating to cause the relay at said station to break the local circuit of the pole-
changer magnet, thereby reversing the direction of current in the line and
simultaneously arresting the alternator at said station and the type-wheels of all
the instruments included in said line.
4. A single line printing telegraph system comprising a source of electric energy,
electrical and mechanical devices located at a station for alternating the direction
of the current in line, transmitting and receiving instruments looped in said line
and each instrument provided with type-wheels, means at said station for arresting
the alternating devices responding to different conditions of current in the line
battery circuit effected by interposing resistance through keys and by breaking the
line by the depression of keys in any transmitter, an auxiliary battery at said
station and means for including the same in line for strengthening the current
thereof.
5. A single line printing telegraph system comprising a source of electric
energy and electrical and mechanical devices substantially as shown and described
for alternating the direction of the current, located at a station in said line,
mechanical and electrical arresting devices substantially as shown and described at

page_text: said station, transmitting and receiving instruments looped in said line and each
provided with sunflower devices, keys and two type-wheels, the said arresting
devices at said station responding to different conditions of current in said line
offected by means of keys at any of said transmitters.
6. A printing telegraph system comprising a source of electric energy and
electrical and mechanical devices substantially as shown and described for alter-
nating the direction of the current located at a station in a single line, mechanical
and electrical arresting devices substantially as shown and described at said station,
transmitting and receiving instruments looped in said line and each provided with
sunflower devices, keys and one or more type-wheels, an auxiliary battery and
circuit at said station, said arresting devices responding to different conditions of
current in said line effected by the depression of keys in said transmitters.
7. A printing telegraph system comprising a source of electric energy and
electrical and mechanical devices substantially as shown and described for alter-
nating the direction of the current located at a station in a single line circuit, an
auxiliary battery circuit at said station, magnetic and mechanical devices sub-
stantially as shown and described to periodically include the same in said line
circuit, transmitting and receiving instruments looped in said line circuit and cach
having type-wheels and means, substantially as described, at said transmitters for
alternately actuating said type-wheels.
8. A printing telegraph system comprising a source of electric energy and
electrical and mechanical devices substantially as shown and described for alter-
nating the current at a station in a single line circuit from said source of electric
energy, mechanical and electrical devices substantially as shown and described, at
said station for arresting said alternating devices, transmitting and receiving
instruments looped in said circuit and each instrument provided with one or more
type-wheels and keys in said transmitting instruments adapted to interpose
resistances in and to break said line circuit to permit of the simultaneous arrest of
the type-wheels of all the instruments in said circuit.
9. A single line printing telegraph system comprising a source of electric
energy, electrical and mechanical devices located at a station for alternating the
polarity of the current in line, transmitting and receiving instruments looped in
said line and each instrument provided with type-wheels, means at said station for
arresting the alternating devices and responding to different conditions of current
in said line effected by interposing resistance through keys and by breaking the
line by the depression of keys in any transmitter, an auxiliary battery at said
station in connection with said source of electric energy and a relay at said
alternating station for introducing said auxiliary battery into said line for
strengthening the current thereof.
10. A single line printing telegraph system comprising a source of electric
energy and electrical and mechanical devices located at a station for alternating
the direction of the current in said line, an auxiliary battery connected with said
alternating devices for strengthening the current in said line, transmitting and
receiving instruments looped therein and each provided with type-wheels, means
for arresting the alternating devices responding to different conditions of current
in the line, keys for interposing resistance and breaking the line, type-wheel
arresting devices adapted to permit of the type-wheels being simultaneously
arrested at the character indicated by the depression of a key and mechanical and
electrical devices responding at each instrument to a break in the line or to a weak
current in the line produced by the depression of any of said keys to cause a
character on said type-wheels to be impressed therefrom, simultaneously on all
instruments included in said line.
11. A printing telegraph system comprising a source of electric energy,
electrical and mechanical devices, a single line circuit, alternating devices at a
station for alternating the direction of currents of said line, transmitting and
receiving instruments looped therein and provided with two type-wheels, means for
arresting the alternating devices and responding to different conditions of currents
.

page_text: in the line, resistance keys and keys for breaking said line, arresting devices
adapted to permit of the type-wheels of said instruments being simultaneously
arrested at a character indicated through the depression of a key and mechanical
and electrical devices to cause a character on said type-wheels to be impressed
therefrom simultaneously on all instruments in said line.
12. A printing telegraph system comprising a source of electric energy, a single
line, electrical and mechanical devices located at an alternating station, trans-
mitting and receiving instruments provided with two or more type wheels looped in
said line, means at said alternating station for arresting the devices located thereat
and responding to different conditions of current in the line effected by interposing
resistance therein, keys at the transmitter for breaking the line, mechanical and
electrical devices responding at each instrument to a break in the line or a weak
current in the line to cause a character on the type-wheels to be simultaneously
recorded on sheets of paper on all the instruments looped in said line.
13. A printing telegraph system comprising a source of electric energy and
electrical and mechanical devices located at a station for alternating the direction
of current in a single line, transmitting and receiving instruments looped in said
line, and each instrument provided with type-wheels, means at said station for
arresting the alternating devices, keys for interposing resistance and for breaking
said line and a relay located at any transmitting instrument for cutting out a
portion of said resistance.
14. A printing telegraph system comprising a source of electric energy, a single
line circuit, electrical and mechanical devices, an alternating station, transmitting
and receiving instruments provided with two type-wheels and looped in said circuit,
keys for interposing resistance and for breaking said line and neutral relays
included in said circuit at the transmitting and receiving instruments.
15. A single line printing telegraph system comprising a source of electric
energy, electrical and mechanical devices, an alternating station, transmitting
and receiving instruments looped in said circuit and provided with two type-
wheels, keys for interposing resistance and for breaking said line, neutral and
polar relays included in said circuit at the transmitting and receiving instru-
ments and controlling respectively the printing mechanism and type-wheels of
the instruments.
16. A printing telegraph system comprising a source of electric energy, a
single line conductor, electrical and mechanical devices, alternating devices at a
station for alternating the direction of the current in said line, a relay included
in said line for arresting said alternating devices, transmitting and receiving
instruments looped in said line, keys for interposing resistance and for breaking
said line and magnetic devices in said line at the transmitting and receiving
instruments for closing local battery circuits through the printing magnets of
said instruments.
17. A printing telegraph system comprising a source of electric energy, a
single line conductor, electrical and mechanical devices, alternating devices at a
station for alternating the direction of the current in said conductor, a relay
included in said circuit to cause the arrest of said alternating devices, trans-
mitting and receiving instruments looped in said circuit, keys for interposing
resistance and for breaking said conductor and a magnetic device included in
said line conductor at the transmitting and receiving instruments for closing
local circuits in parallel through the shifting and printing magnets of said
instruments.
18. A printing telegraph system comprising a source of electric energy, a
single line circuit, electrical and mechanical devices at a station in said line for
alternating the currents therein, arresting devices at said station, magnetic devices
in said instruments operating by uniform alternating currents, resistances at said
instruments and keys therein operating to interpose said resistance in and to break
said line.
19. A single line printing telegraph system comprising a source of electric

page_text: energy, a circuit, electrical and mechanical devices, an alternator at a station,
transmitting and receiving instruments looped in said circuit and each provided with
two type-wheels operating by uniform alternating currents, keys for interposing
resistance and breaking said circuit and a relay at any transmitting instrument for
cutting out a portion of said resistance.
20. A printing telegraph system comprising a source of electric energy, a
circuit, electrical and mechanical devices located at a terminal station for alter-
nating the direction of the current in a single line, transmitting and receiving
instruments looped in said line, detent and unison magnets at the terminal station
included in said line for arresting the alternating devices, a relay responding to
different conditions of current in said line, resistances at the transmitting instru-
ments, a relay located in said line at each transmitting instrument for short
circuiting a portion of the resistance and two series of keys for controlling said line
circuit.
21. A printing telegraph system comprising a source of electric energy, a circuit,
electrical and mechanical devices, an alternating station, transmitting and receiving
instruments looped in said circuit, a detent magnet at said alternating station, a
relay responding to different conditions of current in said circuit, resistances at all
of said instruments and keys for controlling said line circuit.
22. A printing telegraph system comprising a source of electric energy and line
circuit, electrical and mechanical devices located at a station in said circuit for
alternating the current in said line, a local battery circuit at said station, an unison
magnet included in said local circuit, transmitting and receiving instruments looped
in said line circuit, a relay magnet responding to varying conditions of current in
said line and a resistance adapted to be interposed at any transmitting instrument
by one of two series of keys in each transmitting instrument.
23. A printing telegraph system comprising a source of electric energy and line
circuit, electrical and mechanical devices located at a station in said line circuit for
alternating the direction of current in said circuit, means for arresting the alter-
nating devices at said station, transmitting and receiving instruments looped in said
line circuit, a relay magnet responding to different conditions of current in said line
circuit, a resistance at each transmitting instrument and keys for including said
resistance in and for breaking said line.
24. A printing telegraph system comprising a source of electric energy, a circuit,
electrical and mechanical devices, a station for alternating the direction of current
in said circuit, transmitting and receiving instruments, means for arresting the
devices at said station, keys for interposing resistance and breaking said circuit,
a neutral relay responding to different conditions of current in said circuit at said
instruments and a relay for cutting out a portion of said resistance.
25. A printing telegraph system comprising a source of electric energy, a single
line, electrical and mechanical devices located at a station for alternating the
direction of current in said line, a relay at said station responding to breaks and
changes of intensity of the current, a relay at the transmitting instrument for
producing short instantaneous breaks followed by the introduction of resistances in
said line and a row of keys for controlling said relay and line.
26. A printing telegraph system, comprising a source of electric energy and line
circuit, electrical and mechanical devices at a station for alternating the current in
said line circuit, polarized escapement and unison devices at said station for said
alternating devices, transmitting and receiving instruments looped in said line
circuit, a relay at said transmitter for causing short breaks of circuit and for intro-
ducing resistance in said circuit and keys in said transmitters for controlling said
relay and circuit.
27. A printing telegraph system, comprising a source of electric energy, a single
line, electrical and mechanical devices located at a station for alternating the
current in said line, transmitting and receiving instruments looped in said line, a
relay located in said line at said station, local battery circuits controlled by said
r

page_text: relay, arresting devices included in one of said local circuits and keys in said
transmitting instruments for controlling said line.
28. A printing telegraph system comprising a source of electric energy, a single
line, electrical and mechanical devices located at a station for alternating the
current in said line, transmitting and receiving instruments looped in said line,
detent and unison devices at said station for arresting the alternating devices
thereat, a relay at said station responding to different conditions of current in said
line, resistances at a transmitting instrument, means for including said resistance
in said line, a neutral relay and local battery and circuits controlled by said relay.
29. A printing telegraph system comprising a source of electric energy, a single
line, electrical and mechanical devices at a station for alternating the current in
said line, transmitting and receiving instruments looped in said line, detent and
unison devices controlled by a relay at said station and responding to different
conditions of current in said line and two series of keys at a transmitting instrument
for controlling said line.
30. A printing telegraph system comprising a source of electric energy, a single
line, electrical and mechanical devices located at a station for alternating the
direction of current in said line, a relay located in line at said station, local
batteries and circuits at said station controlled by said relay, arresting devices
included in one of said local circuits, alternating devices controlled by a magnet
included in the other of said local circuits and receiving and transmitting
instruments looped in said line.
31. A single line printing telegraph system comprising a line battery circuit, a
pole-changer and magnet, a current alternating device located at a station, a relay
magnet included in said circuit, a local battery circuit closed through the coils of
said pole-changer magnet and the front contact of said relay by the breaking of
said line battery circuit or by the weakening of the current through resistances
interposed in said circuit to cause said relay to interrupt said local circuit through
said pole-changer, thereby arresting said alternator by reversing the direction of
the current to line and to earth.
32. A single line printing telegraph system comprising a line battery circuit,
a pole-changer and magnet, a current alternating device in said circuit at a station,
a relay included in said battery circuit, transmitting and receiving instruments
looped in said line, a local battery circuit closed through the coils of the pole-
changer magnet and through one of the contacts of said relay by the breaking of
the line or by the weakening of the current through resistances included in said
circuit to cause said relay to interrupt said local circuit through said pole-changer
magnet to arrest said alternating device by the reversal of the direction of the
current to line and to earth and two series of keys in each transmitting instrument
for controlling said line circuit.
33. A single line printing telegraph system, comprising a line battery circuit, a
pole-changer and magnet, a current alternating device in said circuit at a terminal
station, a relay magnet included in said battery circuit, a local battery circuit closed
through the coils of said pole-changer magnet and front contact of said relay by
the breaking of the line or by the weakening of the current through the interposition
of resistance in said circuit to cause said relay to interrupt the local circuit
through said pole-changer, thereby arresting said alternator by reversing the
polarity of the current to line and to earth, a unison magnet included in said local
battery circuit closed through the back contact of said relay and adapted to release
the unison latch and to maintain the alternating device in a fixed position.
34. A single line printing telegraph system comprising a line battery circuit, a
pole-changer and magnet, a current alternating device, a relay magnet included in
said circuit at said station, a local battery circuit closed through the coils of said
pole-changer magnet and front contact of said relay, transmitting and receiving
instruments and a unison magnet included in said local battery circuit, and keys for
breaking and controlling said line battery circuit.

page_text: 35. A single line printing telegraph system comprising an alternating station, a
battery circuit, electrical and mechanical devices, substantially as described, locate.l
at said station, a pole-changer and magnet, a relay included in said circuit and cor-
trolling said pole-changer, a local battery circuit closed through the coils of said
pole-changer magnet, transmitting and receiving instruments, detent and unison
magnets included in said local battery circuit at said station and keys for controlling
said line battery circuit.
36. A single line printing telegraph system comprising an alternating station, a
battery circuit, electrical and mechanical devices located at said station, a pole-
changer and magnet, a relay included in said circuit and controlling said pole-
changer, a local battery closed through the coils of said pole-changer magnet,
transmitting and receiving instruments looped in said line circuit, detent and unison
magnets included in a local battery circuit at said station, neutral relays included
in said line battery circuit at said instruments, and keys for controlling said lino
circuit.
37. A single line printing telegraph system comprising a battery and circuit, a
pole-changer and magnet, a current alternating device and a relay magnet included
in said circuit, a local battery circuit closed through the coils of said pole-changer
magnet and the one contact of said relay, resistances to reduce the current of said
line battery through said circuit, a pole-changer to reverse the direction of current
in said circuit and a magnetic escapement device included in said line battery
circuit for arresting and releasing said alternating device.
38. A. single line printing telegraph system comprising a current alternating
device located at a station, a line battery circuit, a relay magnet included in said
battery circuit, a local battery circuit and means included therein adapted to arrest
said alternating devices, transmitting and receiving instruments looped in said line
battery circuit, resistance devices connected with said instruments and adapted to
include the same in said circuit, a magnetic escapement device for arresting the
type-wheels of said transmitting and receiving instruments and keys for controlling
the line battery current through said instruments and said current alternating
devices.
39. A single line printing telegraph system comprising a line battery circuit, a
pole-changer magnet, a rheotome and a relay magnet included in said battery
circuit at a station for alternating the current in said circuit, a local battery circuit
at said station, closed through the coils of said pole-changer magnet and said
rheotome, a detent magnet included in a local circuit at said station, resistances
included in said line battery circuit to control said relay and detent magnet through
said local circuit and to arrest said pole-changer, a unison electro-magnet included
in said local circuit, transmitting and receiving instruments included in said line
battery circuit and keys at the transmitting instruments to control the current of
said line battery circuit.
40. A single line printing telegraph system comprising a line battery circuit, a
pole-changer and a relay included in said battery circuit, a rheotome and a pole-
changer magnet, a local battery circuit closed through said magnet by said rheotome,
a double contact relay in said line battery circuit, a detent magnet and an unison
magnet included in a second local circuit closed through the stops of said relay,
transmitting and receiving instruments looped in said line battery circuit,
resistances to control the current in said line battery circuit and arrest the
vibrations of said pole-changer and keys at said transmitting instruments for
including said resistances in or interrupting said line circuit.
41. A single line printing telegraph system comprising a line battery circuit, a
pole-changer and magnet, a rheotome, a local battery circuit closed through the
coils of said pole-changer and through said rheotome, a relay magnet in said line
and adapted to close a second local battery circuit through the front stop of said
relay and a detent magnet, a unison magnet included in said local battery circuit
and closed through the back-stop of said relay, transmitting and receiving

page_text: instruments looped in said line battery circuit and keys and devices for controlling
said line battery circuit.
42. A single line printing telegraph system, comprising a line battery circuit, a
pole-changer and magnet, a current alternating device and a relay magnet included
in said battery circuit, a local battery closed through the coils of said pole-changer
magnet and the front contact of said relay operating when the line is broken or the
current weakened by the interposition of resistance to cause said relay to break the
local circuit through the pole-changer magnet reversing the direction of the current
to line and to earth, a unison magnet included in a local battery circuit closed
through the back contact of said relay, and adapted to release the unison latch and
to maintain the alternating device in a fixed position while a transmitter key is
depressed, a inagnetic escapement controlling the alternating device by a polarized
relay in the line closing through its respective stops the circuit of a local battery
through the coils of said magnetic escapement.
43. A single line printing telegraph system comprising a battery circuit, a pole
changer and magnet, a current alternating device and a relay magnet included in
said battery circuit, a local battery circuit closed through the coils of said pole-
changer magnet and the front contact of said relay, resistances and interrupters
interposed in said circuit to cause said relay to break the local circuit through said
pole-changer, thereby arresting said alternator by reversing the polarity of current
to line and to earth, a unison magnet included in said local battery circuit closed
through the back contact of said relay and adapted to release the unison latch and
to maintain the alternating device in a fixed position while a key is depressed, a
polar escapement magnet included in said line battery circuit for arresting and
releasing said alternating device.
44. A single line printing telegraph system comprising an alternating station, a
line battery circuit having the electrodes thereof connected with the alternating
device at said station employed to reverse the polarity of the line battery current,
a relay magnet interposed in a conductor between an electrode of said battery and
said alternating device, a ratchet-wheel mounted on the alternator shaft, a magnetic
detent provided with a retracting spring for arresting said alternator and included
in a local battery circuit closed through a contact of said relay, transmitting and
receiving instruments provided with a sunflower device and brushes included in said
line battery circuit, keys connected with said transmitting instruments and adapted
to interpose resistance in said circuit and to break said line circuit and thereby
cause said relay to control said local battery circuit.
45. A single line printing telegraph system comprising an alternating station, a
line battery circuit having the electrodes thereof connected with the alternating
device of said station, a relay magnet interposed in a conductor between one
electrode of said battery and said alternating device, a ratchet-wheel mounted on
the alternator shaft, a magnetic detent included in a local battery circuit and
provided with a retracting spring for arresting said alternator by the interruption
of said local battery circuit at a contact of said relay, a magnetic unison device
connected with said shaft, transmitting and receiving instruments provided with
sunflower devices and brushes included in said line battery circuit, keys in the
transmitting instruments adapted to interpose resistances in said line battery circuit
and to break said circuit to cause said relay to control the local circuits of the
detent and unison devices arresting said alternator at a position corresponding
with that of the type-wheels of all the instruments looped in said line battery
circuit.
46. A single line printing telegraph system comprising a current alternator, a
line battery circuit having the electrodes thereof connected with said alternator,
a relay magnet interposed in a conductor between one electrode of said battery
and said alternator, ratchet and friction wheels mounted on said alternator shaft,
a magnetic detent included in a local battery circuit and provided with a retracting
spring for arresting said alternator by the interruption of said local battery

page_text: circuit at a contact of said relay, a unison device, the magnets of which are
included in a local battery circuit and closed by a contact of said relay, trans-
mitting and receiving instruments provided with sunflower devices and brushes
included in said line battery circuit, keys in the transmitting instruments adapted
to interpose resistances in said line battery circuit and to break said circuit to
cause said relay to control the local circuits of the detent and unison devices
for arresting the alternator at a position corresponding with that of the type-
wheels of all the instruments looped in said line battery circuit.
47. A single line printing telegraph system comprising an alternator, a line
battery circuit having the electrodes thereof connected with said alternator, a relay
magnet interposed in a conductor between said battery and alternator, a raichet-
wheel mounted on said alternator shaft, power frictionally applied to a pulley or
wheel mounted on said shaft, a magnetic detent included in a local battery circuit
and provided with a lever and retracting spring for arresting said alternator through
the breaking of said local battery circuit at a contact of said relay, a magnetic
unison device connected with said shaft, transmitting and receiving instruments
provided with sunflower devices and brushes included in said line battery circuit,
keys in the transmitting instruments adapted to interpose resistances and to break
said circuit to cause said relay to control the local battery circuit of the detent
and unison devices for arresting the alternator at a position corresponding with
that of the type-wheels of all the instruments looped in said line battery circuit.
48. A single line printing telegraph system comprising a current alternating
device at a station, a line battery circuit having the electrodes connected to said
alternating device to permit of a reversal of the polarity of the current in said
circuit, a magnetic device included in a conductor between one of said battery
electrodes and said alternating device, a local battery circuit and a unison magnet
included therein through the back contact of said magnetic device, a ratchet-wheel
mounted on said alternator shaft, means for driving said shaft, a magnetic detent
with its lever and retracting spring for arresting said alternating device and
included in the circuit of said local battery closed through the front contact of
said magnetic device, transmitting and receiving instruments provided with sun-
flower devices and brushes included in said line battery circuit and two series of
keys, two type-wheels in each transmitting instrument and said keys of the
transmitting instruments arranged so as to break the line circuit and interpose
resistances therein to cause said relay to break the circuit of said detent magnets
to arrest the alternating device at a position corresponding with that of the type-
wheels of each transmitter looped in said circuit.
49. In an alternating station for a single line printing telegraph system, the
combination of a single line battery circuit, an alternator frictionally driven by
suitable means, and a polarized escapement magnetic device included in said line
battery circuit and automatically controlling the speed of said alternator, sub-
stantially as and for the purposes described.
50. In an alternating station for a printing telegraph system comprising a single
line battery circuit, an alternator included therein at an alternating station and
driven by suitable power, transmitting and receiving instruments provided with two
type-wheels and looped in said line battery circuit and electrical and mechanical
devices at said instruments for controlling said alternator, substantially as and for
the purposes described.
51. In an alternating station for a printing telegraph system, the combination of
a single line circuit, an alternator and a relay magnet included therein escapement
maguets operating a polarized armature and included in said line and a unison
magnet included in a local battery circuit controlled by said relay, substantially as
and for the purposes described.
52. In a terminal station for a printing telegraph system, the combination of a
single line, an alternator frictionally driven, a relay magnet included in said line,
and detent and unison magnets included in local battery circuits controlled by said
relay, substantially as and for the purposes described.

page_text: 53. In an alternating station for a line printing telegraph system, the combination
of a single line battery circuit, an alternator frictionally driven, a polar escapement
magnetic device and relay magnet included in said line battery circuit, a local
battery circuit and a magnetic device for arresting said alternator at the unison
position, substantially as and for the purposes described.
54. In a printing telegraph system, the combination of a source of electric energy,
a single line, an alternator, frictionally driven by suitable power, a polarized
escapeinent magnetic device and a relay magnet included in said line, a local
battery, an unison magnetic device included therein, transmitting and receiving
instruments looped in said line battery circuit and each provided with double type-
wheels and keys for controlling the actuating parts of said instruments and said
line battery circuit, substantially as and for the purposes described.
55. An alternating station for a single line printing telegraph system comprising a
battery circuit having the electrodes thereof connected with the alternator employed
to reverse the polarity of the line current, a relay magnet interposed between one
electrode of said battery and the alternator, a ratchet-wheel mounted on a revolving
shaft, a magnetic detent provided with a retracting-spring for arresting said
alternator and included in a local battery circuit closed through a contact of said
relay, transmitters and receivers, each provided with two type-wheels, and a sun-
flower and brushes interposed in said line battery circuit, a series of keys connected
with said circuit, another series of keys adapted to be connected through
resistances with said circuit to permit said relay to break said local circuit through
said detent magnet, substantially as and for the purposes described.
56. In a station for a printing telegraph system adapted to record impressions
from two type-wheels, the combination of a line battery circuit, current alternating
devices, arresting devices, a relay traversed by the current of said line battery
circuit and controlling the circuits of local batteries operating said alternating and
arresting devices, transmitting and receiving instruments provided with sunflower
devices included in said line battery circuit, and keys adapted to permit said
relay to respond to breaks and changes of intensity in the current of said line
battery circuit, substantially as and for the purposes set forth.
57. In a station alternating device for a printing telegraph system, the combina-
tion of a source of electric energy, a line battery circuit, a frictionally driven
shaft, two hubs and four discs mounted thereon and said discs provided with
alternating contacts and insulations, two of said discs electrically connected with
one of said hubs, and the other two electrically connected with the other of said
hubs, six springs insulated from one another, two of said springs electrically con-
nected with one electrode of said line battery circuit and another two of said
springs electrically connected with the other electrode of said line battery circuit
and the remaining springs bearing on hubs connected to earth through the said
line battery circuit, substantially as and for the purposes set forth.
58. In a station alternating device for a printing telegraph system, the com-
bination of a frictionally driven shaft, two hubs and four discs mounted thereon and
said discs provided with contacts and insulations, two of said discs electrically
connected with one of said hubs and the other two with the other of said hubs, six
springs insulated from one another, four of said springs electrically connected
alternately with the electrodes of a line battery circuit and the remaining two
bearing on hubs and connected with said line battery circuit and to earth and a
magnetic detent, substantially as and for the purposes set forth.
59. In a station alternating device for a printing telegraph system, the com-
bination of a frictionally driven shaft, a current alternating device mounted thereon,
insulated springs bearing on said device and included in a line battery circuit and
an automatic magnetic escapement device for controlling said shaft, substantially as
and for the purposes set forth.
60. In a station alternating device for a printing telegraph system, the com-
bination of a frictionally driven shaft, a current alternating device mounted thereon,
insulated springs bearing on said device and included in a line battery circuit, an

page_text: automatic magnetic escapement device and a unison device for controlling said
shaft, substantially as and for the purposes set forth.
61. In a station alternating device for a printing telegraph system, the com-
bination of a frictionally driven shaft, a current alternating device mounted thereon,
means included in a line battery circuit contacting with said alternating device, an
automatic escapement magnetic device, a unison magnetic device and a relay
included in said line battery circuit between said alternating device and one
electrode of said line battery and adjusted to control said alternator, substantially
as and for the purposes set forth.
62. The combination, in a vibrating alternator for a printing telegraph
system, of a shaft, means substantially as shown and described, for driving
said shaft, a rheotome mounted thereon, devices included in a local battery
circuit connected with said rheotome, a pole-changer vibrated by said devices,
a relay in a line battery circuit and, an automatic escapement magnetic device
included in said line battery circuit and adapted to control said shaft, substantially
as set forth.
63. In an alternator for a printing telegraph system, the combination of a shaft
driven by suitable power, an alternating device mounted thereon, insulated springs
bearing on said device and included in a line battery circuit, an escapement
magnetic device, a magnetic unison device and means included in said line battery
circuit between said alternating device and one clectrode of said line battery and
adapted to close local battery circuits to release the arresting device of said
alternator, substantially as and for the purposes set forth.
64. In an alternator for a printing telegraph system, the combination of a shaft
frictionally driven, a pulsating device, a ratchet wheel mounted thereon, a pole-
changer and magnet in a local circuit through said pulsating device and a detent
magnet in a local circuit controlled by a relay included in a main line battery
circuit, substantially as and for the purposes set forth.
65. In an alternator for a printing telegraph system, the combination of a shaft
frictionally driven, a pulsating device and a ratchet wheel mounted thereon, a pole-
changer, its magnet in a local circuit through said pulsating device, a detent magnet
and a unison device in a local circuit controlled by a relay included in a main line
battery circuit, substantially as and for the purposes set forth.
66. In a printing telegraph system, the combination of a frictionally driven shaft,
a pulsating device mounted thereon, insulated springs bearing on said device and
included in a local battery circuit, a pole-changer controlled through said local
circuit by said pulsating device and a unison magnetic device in a second local
circuit, substantially as and for the purposes set forth.
67. In a printing telegraph system, the combination of a frictionally driven shaft,
a pulsating device mounted thereon, insulated springs bearing on said device and
included in a local battery circuit, a pole-changer controlled through said local
circuit by said pulsating device and an unison device in a second local battery
circuit controlled by a relay in a line battery circuit, substantially as and for the
purposes set forth.
68. In a printing telegraph system, the combination of a frictionally driven shaft,
a pulsating device mounted thereon, insulated springs bearing on said device and
included in a local battery circuit, a pole-changer controlled through the local
circuit by said pulsating device and detent and unison magnetic devices included in
local battery circuits controlled by a relay in a line battery circuit, substantially as
and for the purposes set forth.
69. In a printing telegraph system, the combination of a frictionally driven shaft,
a pulsating device mounted thereon, insulated springs bearing on said device and
included in a local battery circuit, a pole-changer controlled through the local
circuit by said pulsating device, detent and unison magnetic devices included in
local battery circuits controlled by a relay in a line battery circuit and transmitting
and receiving instruments, each provided with two type-wheels sunflower brushes

page_text: and keys included in said line battery circuit and said keys controlling the same,
substantially as and for the purposes set forth.
70. In a printing telegraph system, the combination of a rotating pulsator driven
by power frictionally applied thereto and controlled by escapement magnets
vibrating a neutral armature and a lever and said magnets responding to currents
in a local battery circuit controlled by a polar relay included in said line battery
circuit, magnetic devices provided with a neutral armature vibrating a lever and
arrested by a break or weak current in said circuit caused by an interruption in
said line battery circuit or by interposing resistances therein, substantially as and
for the purposes set forth.
71. In a printing telegraph system, the combination of a rotary pulsator driven
by power frictionally applied thereto and automatically controlled by escapement
magnets vibrating a polarized armature and a lever and said magnets responding to
alternating currents in a line battery circuit, magnetic devices provided with a
neutral armature vibrating a lever in response to currents of a local battery circuit
and said devices closing the circuits of said local battery through a unison magnetic
device, substantially as and for the purposes set forth.
72. In a printing telegraph system, the combination of a positively driven shaft
controlled by mechanical and electrical devices actuated by alternating single line
currents, two type-wheels attached to a sleeve mounted on said shaft and having
characters in the same radial line, a sunflower provided with insulated contacts
equal in number to the number of characters on each of said type-wheels, sunflower
contact brushes in said line, two series of keys normally in closed circuit through
said sunflower, one series of keys connected to each sunflower contact and operating
to break the line battery circuit to its corresponding key in the other series and to
close the line circuit through a resistance, the keys of the other series adapted to
break the line through the contacts of said sunflower with which said keys are
electrically connected, substantially as described.
73. In a printing telegraph system, the combination of a station alternating and
arresting device, a shaft positively driven by suitable power, an unison device, its
latch, magnet, armature and releasing lever, a detent and retracting spring, a
rheotome mounted on said shaft, springs in a local battery circuit contacting with
said rheotome, a magnet adapted to vibrate a pole-changer, a line battery located
at said station and having the electrodes connected with said pole-changer and to
line and to carth, a relay included in a conductor between said pole-changer and
electrode of said line battery, a detent magnet and a ratchet-wheel mounted on said
shaft, substantially as and for the purposes set forth.
74. In a printing telegraph system, the combination of an alternating and
arresting device, a shaft driven by power applied thereto, an unison device, its
latch, magnet, armature and releasing-lever, a detent and retracting-spring, a
rheotome mounted on said shaft, springs in a local battery circuit contacting with
said rheotome, a magnet adapted to vibrate a pole-changer, a line battery circuit
having the electrodes connected to said pole-changer and to line and to earth, a
relay included in a conductor between said pole-changer and an electrode of said
line battery circuit, a detent magnet and a ratchet-wheel mounted on said shaft,
substantially as and for the purposes set forth.
75. In a printing telegraph system, the combination of an alternating and
arresting device, a shaft suitably driven, an unison device, its latch, magnet,
armature and releasing lever, a detent and a retracting spring, & rheotome mounted
on said shaft, springs in a local battery circuit contacting with said rheotomc, a
magnet adapted to vibrate a pole-changer, a line battery located at said station
and having the electrodes connected to said pole-changer and to line and to earth,
a relay included in the line conductor between said pole-changer and an electrode
of said line battery, a detent magnet, a ratchet-wheel mounted on said shaft,
transmitting and receiving instruments provided with type-wheels, a sunflower
device included in said line battery circuit, and two series of keys to break

page_text: and to interpose resistance in said line battery circuit, substantially as and for the
purposes set forth.
76. In a single line printing telegraph system, the combination of a line battery
circuit, an alternator, an arresting device thereat, a relay in said line battery
circuit, a unison-device on said alternator shaft, a unison latch, mechanical means
and a local battery circuit for controlling the same, transmitting and receiving
instruments provided with type-wheels and included in said line battery circuit and
said type-wheels controlled by alternating currents, unison devices on shafts of said
transmitters and receivers and moving synchronously with said type-wheels, means
for releasing the same, a neutral double contact relay included in said line battery.
circuit at each transmitting and receiving instrument and closing through on
contact the circuit of a local printing battery, an unison cut-out at each instrument
in said line battery circuit for interrupting said local battery circuit, the other
contact of said relay adapted to close said local battery circuit through a printing
magnet controlling the unison releasing devices of each instrument and said line
battery circuit adapted to arrest said alternating devices and the type-wheels of all
the instruments in said line battery circuit at unison position, an unison key at a
transmitter to cause said relay in said line battery circuit at the alternating station
to close said local battery circuit and to energize the unison-magnet at said
alternating station and to cause the relays at said instruments to close said local
printing circuits, to energize the printing-magnets of each instrument and to release
simultaneously said alternating device and type-wheels of all the instruments at the
unison position, substantially as described.
77. In a single line printing telegraph system, the combination of a line battery
circuit, a rheotome, arresting devices for said rheotome, a relay in said line battery
circuit, an unison device mounted on the rheotome shaft, an unison latch and means
for controlling the same located at an alternating station, transmitting and receiving
instruments provided with type-wheels and included in said line battery circuit
controlled by alternating currents, unison-devices on a shaft of said transmitters
and receivers and moving synchronously with said type-wheels, means for releasing
the same, a double contact neutral relay included in said line battery circuit at
cach transmitting and receiving instrument and closing through one contact the
circuit of a local printing battery, an unison cut-out at each instrument for inter-
rupting said local printing battery circuit, the other contact of said relay adapted
to close said local printing battery circuit through a printing magnet controlling
the releasing devices of each instrument, said line battery circuit adapted to arrest
the alternating devices and the type-wheels of all instruments in said line battery
circuit at the unison position, a key at a transmitter to cause said relays in said
fine battery circuit to close the local circuits and to energize the unison-magnet at
the alternating station and the printing-magnets of each instrument and to release
the alternating devices and type-wheels of the instruments at the unison position,
substantially as described.
78. In a single line printing telegraph system, the combination of a line battery
circuit, a current alternator, arresting devices therefor, a relay, unison devices
ocated at an alternating station, transmitting and receiving instruments included in
and controlled by said line battery circuit and provided with type-wheels and
unison devices, a double contact neutral relay included in the said line battery
circuit at each transmitting and receiving instrument and adapted to close through
one contact a local battery circuit through a printing-magnet and through its other
contact a local circuit in parallel through a type-wheel shifting-magnet and said
printing-magnet, substantially as and for the purposes set forth.
79. In a single line printing telegraph system, the combination of a line battery
ircuit, a current alternator, arresting devices, a relay and unison devices located at
aid alternator, transmitting and receiving instruments included in said line battery
ircuit and provided with type-wheels and unison devices, a neutral relay included
n said line battery circuit at each transmitter and receiver and a magnetic
D

page_text: interrupter in the line battery circuit adapted to make and break a local battery
circuit through the printing and type-wheel shifting magnets controlled by said
neutral relay, substantially as and for the purposes set forth.
80. In a printing telegraph system, the combination of a positively driven shaft,
mechanical and electrical devices actuated by alternating single line currents for
controlling the same, two type-wheels mounted on a sleeve on said shaft and having
characters in the same radial line, a sunflower provided with insulated contacts
equal in number to the number of characters on each of said wheels, sunflower
devices and contact brushes, two series of keys normally in closed circuit through
said sunflower devices, the keys of one series connected to each sunflower contact
and adapted to break the line circuit to its corresponding key in the other series
and to close said line battery circuit through a resistance, the keys of the other
series adapted to break said line battery circuit through said sunflower contact and
keys, substantially as set forth.
81. A printing telegraph system comprising a line battery circuit, an alternating
device therein, means for actuating and arresting the same, a polarized relay
actuated by alternating currents in said line battery circuit, transmitting instru-
ments looped in said circuit and comprising a shaft driven by suitable power, two
type-wheels adjustably mounted thereon and having characters in the same radial
line, a sunflower provided with insulated contacts equal in number to the number of
characters on each of said wheels, sunflower devices and contact brushes, keys and
electrical devices in said transmitters, a local battery circuit and a magnetic device
included in said local circuit and controlling said shaft, substantially as and for the
purposes set forth.
82. A printing telegraph system comprising a line battery circuit, an alternating
device therein, means for actuating and arresting the same, a polarized relay
actuated by alternating currents in said line battery circuit, transmitting instru-
ments looped in said circuit comprising a shaft driven by suitable power, two type-
wheels adjustably mounted thereon and having characters in the same radial line, a
sunflower provided with insulated contacts equal in number to the number of
characters on each of said wheels, sunflower devices and contact brushes, keys and
electrical devices in said transmitters, a local battery circuit, a magnetic escapement
device included in said local circuit, closed through said polarized relay and
controlling said shaft, substantially as and for the purposes set forth.
83. A printing telegraph system comprising a line battery circuit, an alternating
device therein at a station, means for actuating the same, a shaft frictionally driven
by suitable power, two type-wheels adjustably mounted thercon and having
characters in the same radial line, a sunflower provided with insulated contacts
equal in number to the number of characters on each of said wheels, sunflower
devices and contact brushes, keys in said transmitters, a magnetic escapement
device included in said line battery circuit responding to alternating currents to
control said shaft and means for arresting the alternating device at said station
controlled through keys in each transmitting instrument looped in said line circuit,
substantially as and for the purposes set forth.
84. A printing telegraph system, comprising a line battery circuit, an alternating
device therein, means for actuating and arresting the same, a polarized relay actuated
by alternating currents in said line battery circuit, transmitting instruments looped
in said circuit and consisting of a shaft driven by suitable power, two type-wheels
mounted thereon, a sunflower provided with insulated contacts equal in number to
the number of characters on each of said wheels, sunflower devices and contact
brushes, a local battery circuit, a magnetic device included in said local circuit and
controlling said shaft and keys for controlling said line battery circuit, substantially
as and for the purposes set forth.
85. A printing telegraph system comprising a line battery circuit, an alternating
device therein at a station, means for actuating said alternating device, transmitting
and receiving instruments, each provided with type-wheels, sunflower devices and

page_text: insulated contacts, a shaft driven by suitable power, a magnetic device included in
said line battery circuit responding to alternating currents to control said shaft,
keys controlling said line battery circuit, means for arresting the alternating device
at said station controlled by keys in each transmitting instrument looped in said
circuit, substantially as and for the purposes set forth.
86. A printing telegraph system, comprising a line battery circuit, an alternating
device, means for actuating and arresting the same, a polarized relay actuated by
alternating currents in said line, a battery circuit, a shaft driven by suitable power,
type-wheels adjustably mounted thereon and having characters arranged in the
same radial liue, a sunflower provided with insulated contacts equal in number
to the number of characters on each of said wheels and adapted to move
synchronously therewith, brushes included in said line battery circuit, a local
battery circuit, a magnetic escapement device included therein and controlling said
shaft, two series of keys normally in closed circuit through the sunflower, the keys
of one series connected to each sunflower contact, and adapted to break the line
circuit to its corresponding key in the other series and close the line circuit through
a resistance, the keys of the other series adapted to break the line, through the
sunflower contact with which said keys are electrically connected, substantially as
set forth.
87. A printing telegraph system comprising a line battery circuit, an alternating
device, means for actuating and arresting the same, a shaft driven by suitable
power, two type-wheels adjustably mounted thereon and having characters arranged
in the same radial line, a magnetic escapement device included in said line battery
circuit and responding to alternating currents to control said shaft, a sunflower
adapted to move synchronously with said type-wheels and having insulated
contacts equal in number to those on each of said type-wheels, sunflower brushes
included in said line battery circuit, two series of keys normally in closed circuit.
through said sunflower, the keys of one series connected to each sunflower contact
and adapted to break said line battery circuit to its corresponding key in the other
series and to close said line battery circuit through a resistance, the keys of the
other series adapted to break said line battery circuit through the sunflower contact
electrically connected with said keys, substantially as and for the purposes set
forth.
88. A printing telegraph system comprising a line battery circuit, an alternating
device, means for actuating and arresting the same, transmitting instruments looped
in said battery circuit and consisting of a shaft driven by suitable power, two type-
wheels adjustably mounted thereon and having characters arranged in the same
radial line, a magnetic escapement device included in said line battery circuit and
responding to alternating currents to control said shaft, a sunflower adapted to
move synchronously with said type-wheels and having insulated contacts equal in
number to those on each of said type-wheels, sunflower brushes included in said line
battery circuit, two series of keys normally in closed circuit through said sunflower,
the keys of one series connected to each contact of said sunflower and adapted to
break said line battery circuit to its corresponding key in the other series and to
close said line battery circuit through a resistance, the keys of the other series
adapted to break said line battery circuit through the contact of said sunflower
clectrically connected with said keys, an unison device on the type-wheel shaft and
means for releasing the same, substantially as and for the purposes set forth.
89. A printing telegraph system comprising a line battery circuit, an alternating
device, means for actuating and arresting the same, a polarized relay actuated by
alternating currents in said line battery circuit, transmitting instruments looped in
said circuit, consisting of a shaft driven by suitable power, type-wheels mounted on
said shaft, an unison device, and means for releasing the same, an arm on a shaft
revolving synchronously with the type-wheel shaft and adapted to operate an
unison cut-out in a local printing circuit, a sunflower adapted to move synchron-
ously with said type-wheels and having insulated contacts equal in number to the
characters on each of said type-wheels, sunflower brushes included in said line

page_text: battery circuit, a local battery circuit, a magnetic device included therein and
controlling said shaft, two series of keys normally in closed circuit through said
sunflower, the keys of one series connected to each contact of said sunflower and
adapted to break said line battery circuit to its corresponding key in the other
series and to close said line battery creuit through a resistance, the keys of the
other series adapted to break said fine battery circuit through the contact of said
sunflower electrically connected with said keys, substantially as and for the purposes
set forth.
90. A printing telegraph system comprising a line battery circuit, an alternating
device, means for actuating and arresting the same, a polarized relay actuated by
different conditions in current of said battery circuit, transmitting instruments looped
in said circuit and comprising a shaft driven by suitable power, two type-wheels
adjustably mounted on said shaft and having characters in the same radial line, an
arm on said shaft, contact springs insulated from each other in a local circuit and
adapted to break said local circuit at the unison position, a sunflower provided with
insulated contacts equal in number to the characters ou each of said type-wheels,
sunflower contact brushes included in said circuit, a local battery circuit closed by
the contacts of said polarized relay, a magnetic escapement device included therein
and controlling said shaft, two series of keys normally in closed circuit through
said sunflower, the keys of one series connected to each sunflower contact and
adapted to break the line circuit to its corresponding key in the other series and to
close said circuit through a resistance, the keys of the other series adapted to break
said circuit through a sunflower contact electrically connected with said keys, sub-
stantially as and for the purposes set forth.
91. A printing telegraph system comprising a source of energy, a circuit, an
alternating device, means for actuating and arresting the same, a polarized relay
actuated by alternating currents, transmitting and receiving instruments looped in
said circuit and comprising a shaft driven by suitable means, type-wheels adjustably
mounted on said shaft and having characters arranged in the same radial line, an
unison device and releasing mechanism therefor, an unison cut-out arm, a sunflower
provided with insulated contacts equal in number to the characters on each of said
type-wheels, sunflower brushes included in said line circuit, a local battery circuit,
a magnetic escapement device included therein and controlling said shaft two series
of keys normally in closed circuit through said sunflower, the keys of one series
connected to each of said sunflower contacts and adapted to break said line circuit
to its corresponding key in the other series and to.close said line circuit through a
resistance, the keys of the other series adapted to break said line, through a sun-
flower contact electrically connected with said keys, substantially as and for the
purposes set forth.
92. A printing telegraph system comprising a source of electric energy, a circuit,
an alternating device, means for actuating and arresting the same, a polarized relay
actuated by alternating currents, combined transmitting and receiving instruments
looped in said circuit and comprising a shaft driven by suitable power, type-wheels,
an unison device, releasing mechanisin, an unison cut-out arm, a sunflower provided
with insulated contacts equal in number to the characters on each of said type-
wheels, brushes included in said line circuit, a local battery circuit, a magnetic
escapement device included therein and controlling said shaft, two series of keys
normally in closed circuit through said sunflower, the keys of one series connected
to each of said sunflower conta:ts and adapted to break said line circuit to its
corresponding key in the other series and to close said line circuit through a
resistance, the keys of the other series adapted to break said line through a sun-
flower contact electrically connected with said keys, substantially as and for the
purposes set forth.
93. A printing telegraph system comprising a source of electric energy, a circuit,
an alternating device, means for actuating and arresting the same, combined trans-
mitting and receiving instruments looped in said circuit and comprising a shaft
driven by suitable power, type-wheels mounted thereon, an unison device and

page_text: releasing mechanism therefor, an unison cut-out arm, a sunflower device provided
with insulated contacts, equal in number to the characters on each of said type-
wheels, brushes included in said line circuit, a magnetic escapement device included
in said line circuit and responding to alternating currents to control said shaft, and
two series of keys normally in closed circuit through said sunflower device, substan-
tially as and for the purposes set forth.
94. A printing telegraph system comprising a source of electric energy, a
circuit, an alternating device, means for actuating and arresting the same, combined
transmitting and receiving instruments looped in said circuit and comprising a shaft
driven by suitable power, type-wheels mounted thereon, an unison device and
releasing mechanism, an unison cut-out arın, a circuit interrupter, a ratchet device
mounted on a shaft moving synchronously with said type-wheel shaft and adapted
to actuate said interrupter, a sunflower device provided with insulated contacts
equal in number to the characters on each of said type-wheels, brushes included in
said line circuit and responding to alternating currents and controlling said shaft,
and two series of keys in connection with said sunflower device, substantially as and
for the purposes set forth.
95. A printing telegraph system comprising a line battery circuit, an alternating
device, means for actuating and arresting the same, transmitting and receiving
instruments looped in said circuit and comprising a shaft driven by suitable power,
type-wheels mounted thereon, an unison latch and spiral, releasing devices therefor,
a circuit interrupter actuated by a ratchet-wheel on said shaft for rapidly making
and breaking a local circuit through a printing magnet, a sunflower device with
insulated contacts equal in number to the characters of each of said type-wheels, sun-
flower brushes included in said circuit, a magnetic escapement device included in a
circuit and responding to alternating currents, and two series of keys for controlling
said line circuit, substantially as and for the purposes set forth.
96. A printing telegraph system, comprising a line battery circuit, an alternating
device, means for actuating and arresting the same, a polarized relay actuated by
alternating currents, transmitting and receiving instruments looped in said circuit
and comprising a shaft driven by suitable power, type-wheels adjustably mounted
on said shaft and having characters in the same radial line, a local battery circuit,
escapement magnets included therein and controlling said type-wheels, an unison
latch and spiral releasing device therefor, a circuit interrupter and a ratchet-wheel on
said shaft for rapidly making and breaking a local battery circuit through a printing
magnet, a sunflower provided with insulated contacts equal in number to the number
of characters of each of said type-wheels, a sunflower device, brushes included in
said line battery circuit, two series of keys normally in closed circuit through said
sunflower device, the keys of one series connected to each sunflower contact and
adapted to break said line battery circuit to its corresponding key in the other
series and to close said line circuit through a resistance, the keys of the
other series adapted to break said line battery circuit through a sunflower contact
electrically connected with said keys, substantially as and for the purposes
set forth.
97. A printing telegraph system comprising a line battery circuit, an alternating
device, means for actuating and arresting the same, transmitting and receiving
instruments looped in said line battery circuit and comprising a shaft positively
driven, type-wheels mounted thereon, a magnetic escapement device, an unison latch
and spiral, releasing mechanism therefor, a magnetic interrupter, a local battery
circuit, a printing magnet, a double contact neutral relay adapted to close the local
battery circuits through said interrupter and the type-wheel shifting and printing
magnets, a sunflower device provided with insulated contacts equal in number to
the characters of each type-wheel, brushes included in said line battery circuit, two
series of keys normally in closed circuit through said sunflower device, the keys of
one series connected to each sunflower contact and adapted to break said line
battery circuit to its corresponding key in the other series and to close said line
battery circuit through a resistance, the keys of the other series adapted to break

page_text: .
said line battery circuit through the sunflower contact electrically connected with
said keys, substantially as and for the purposes set forth.
98. A printing telegraph system comprising a line battery circuit, an alternating
device, means for actuating and arresting the same, a polarized relay responding to
alternating currents, transmitting and receiving instruments looped in said "line
battery circuit and comprising a shaft positively driven, type-wheels adjustably
mounted on said shaft and having characters arranged in the same radial line, an
escapement magnetic device included in a local circuit and controlling said type-
wheels, an unison latch and spiral, releasing mechanism therefor, a circuit interrupter,
a local battery circuit, a printing magnet and said interrupter adapted to rapidly
make and break said local circuit through said magnet, a double contact neutral
relay included in said line battery circuit and through the front contact and
electrical devices closing said local battery circuit through said interrupter and in
multiple arc through the type-wheel shifting and printing magnets, a sunflower
device provided with insulated contacts equal in number to the characters on each of
said type-wheels, brushes included in said line battery circuit, two series of keys
normally in closed circuit through said sunflower device, the keys of one series
connected to each sunflower contact and adapted to break said line battery circuit
to its corresponding key in the other series and to close said line battery circuit
through a resistance, the keys of the other series adapted to break said line
battery circuit through the sunflower contact electrically connected with said keys,
substantially as and for the purposes set forth.
99. A printing telegraph system comprising a source of electric energy, a single
line, an alternating device, means for actuating and arresting the same, mechanical
and electrical devices actuated by alternating single line currents, combined
transmitting and receiving instruments looped in said circuit, a shaft driven by
suitable power, type-wheels adjustably mounted on said shaft and having the
characters arranged in the same radial line, an unison latch and spiral, releasing
devices therefor, a circuit interrupter, a magnetic escapement device, a local battery
circuit, a printing magnet included therein, a double contact neutral relay included
in said line battery circuit and adapted to close said local circuit through the type-
wheel shifting and printing magnets, a sunflower device with contacts equal in
number to the characters of each of said type-wheels, sunflower contact_brushes
included in said line battery circuit, two series of keys normally in a closed circuit
connected with said sunflower device, substantially as and for the purposes set
forth.
100. A printing telegraph system comprising a single line battery circuit, an
alternating device, means for actuating and arresting the same, mechanical and
electrical devices at said alternator and operated by alternating single line currents,
a shaft suitably driven, type-wheels adjustably mounted on said shaft and having
the characters arranged in the same radial line, an unison latch and spiral, releasing
devices therefor, a circuit interrupter, a local battery circuit, a printing magnet, a
type-wheel shifting magnet, a double contact neutral relay included in said line
battery circuit and closing by means of its front contact and electrical devices suid
local battery circuit through said interrupter and in multiple are through said type-
wheel shifting and printing magnets, a sunflower with insulated contacts equal in
number to the characters of each of said type-wheels, sunflower contact brushes
included in said line battery circuit, two series of keys normally in closed
circuit through said sunflower, the keys of one series connected to each
sunflower contact, and adapted to break said line battery circuit to its corresponding
key in the other series and to close said line battery circuit through a resistance.
the keys of the other series adapted to break said line battery circuit through said
sunflower contact electrically connected with said keys, substantially as and for the
purposes set forth.
101. In a printing telegraph system, an alternating device at a station in a line
battery circuit, arresting devices at said station, the electrodes of said battery
connected to said alternating device, a relay magnet included in said circuit, an

page_text: auxiliary battery, the electrodes of which similar in polarity to those of said line
battery adapted to be connected through a contact of said relay to said alternating
device, substantially as shown and for the purposes set forth.
102. In a printing telegraph system, a line battery circuit, alternating devices
included in said circuit and means, substantially such as described, for controlling
and arresting said devices, transmitting and receiving instruments with sunflower
devices and keys, a relay magnet included in said line battery circuit at said
instruments, and a resistance adapted to be connected directly with said keys and
said circuit through a contact of said relay, substantially as and for the purposes
set forth.
103. In a printing telegraph, the combination of a line battery circuit, a double
contact neutral relay included therein, a local battery circuit, a printing magnet and
devices, an electro-magnetic interrupter included in said line battery circuit, the
local battery circuit being closed through said interrupter and printing magnet by
the back and front contacts of said relay to permit of the printing through one
contact of said relay from a type-wheel normally in position and printing through
the other contact when another type-wheel has been shifted into position,
substantially as set forth.
104. In a printing telegraph system, the combination of a line battery circuit,
a double contact neutral relay included therein, a local battery circuit, an electro-
magnetic interrupter actuated by means in said line battery circuit, a printing magnet
and devices, a shifting magnet and mechanical and electrical devices, said relay
adapted to close said local battery circuit in parallel through said shifting and
printing magnets, substantially as and for the purposes set forth.
105. In a printing telegraph system, the combination of a line battery circuit, a
double contact neutral relay and a single contact relay included therein, a local
battery circuit, printing and shifting magnets, an unison cut-out and mechanical and
electrical devices the said magnets, contacts of said cut-out and single contact
relay included in a local battery circuit through the front stop of said double
contact relay and said electrical devices, substantially as and for the purposes set
forth.
106. In a printing telegraph system, the combination of a shifting magnet, its
armature, lever and retracting-spring, an insulated arm connected with said lever,
two insulated contact-springs adapted to contact with said arm, a relay and its
contacts, a printing magnet and devices therefor and a local circuit closed through
said relay contact, one of said springs, the shifting magnet and through said relay
contact and both of said springs and the shifting and printing magnets in parallel.
circuit, substantially as and for the purposes set forth.
107. A printing telegraph system comprising a source of electric energy, a
single line, an alternating device, means for actuating and arresting the same,
transmitting and receiving instruments and a polarized relay looped in said line, a
positively driven shaft, type-wheels adjustably mounted on said shaft and having
characters arranged in the same radial line, a local battery circuit, a magnetic
escapement device included in said local circuit and controlling said type-wheels
through the contacts of said polarized relay, an unison latch and spiral, releasing
devices therefor, an interrupter, a neutral double contact relay included in said line
battery circuit, and closing by means of the front contact and electrical devices, a
local battery circuit through said interrupter and in multiple arc through the
shifting and printing magnets, a sunflower provided with insulated contacts equal in
number to the characters on each of said type-wheels, sunflower brushes included in
said line battery circuit, two series of keys normally in closed circuit through said
sunflower, the keys of one series connected to each sunflower contact and adapted
to break said line circuit to its corresponding key in the other series and to close
said line circuit through a resistance, the keys of the other series adapted to break
said line through the sunflower contact electrically connected with said keys,
substantially as and for the purposes set forth.
108. A printing telegraph system, comprising a line battery circuit, an alternating

page_text: device, means for actuating and arresting the same, transmitting and receiving
instruments included in said line battery circuit, a positively driven shaft, type-
wheels mounted on said shaft, a local battery circuit, a magnetic escapement
included in said line battery circuit and controlling said type-wheels, an unison
latch and spiral, releasing devices therefor, a circuit interrupter, a ratchet-wheel on
said shaft for rapidly making and breaking a local circuit through the printing
magnet, a double contact neutral relay included in said line battery circuit and
closing by means of the back contact and devices a local battery circuit through
the printing-magnet, a sunflower provided with insulated contacts equal in number
to the characters on each of said type-wheels, sunflower contact brushes included in
said line battery circuit, two series of keys normally in closed circuit through said
sunflower, the keys of one series connected to each sunflower contact and adapted to
break said line battery circuit to its corresponding key in the other series, and to
close said line circuit through a resistance, the keys of the other series adapted
to break said line battery circuit through the sunflower contact electrically connected
with said keys, substantially as and for the purposes set forth.
109. A printing telegraph system comprising a source of electric energy, a
single line, mechanical and electrical devices actuated by alternating currents,
transmitting and receiving instruments and a polarized relay included in said
line, a shaft positively driven, type-wheels adjustably mounted on said shaft and
having characters arranged in the same radial line, an unison latch and spiral,
releasing devices, a local circuit, means connected with a shaft, a circuit interrupter
for rapidly making and breaking a local circuit through the printing magnet, a
double contact neutral relay included in said line and closing by means of the
back contact and devices said local battery circuit through the printing-magnet,
a sunflower provided with insulated contacts equal in number to the characters
on each of said wheels, sunflower contact brushes included in said line, two series
of keys normally in closed circuit through said sunflower, the keys of one series
connected to each sunflower contact, and adapted to break said line to its
corresponding key in the other series and to close said line through a resistance
and the keys of the other series adapted to break said line through the sun-
flower contact electrically connected with said keys, substantially as and for the
purposes set forth.
110. The combination with a paper carriage for a printing telegraph system,
of side-bars, wheels connected thereto and mounted on a track, safety-wheels
engaging below said track, a rack and a strut forming a guide-way bearing on
a centrally located single wheel, substantially as shown and for the purposes set
forth.
111. The combination with a paper carriage for a printing telegraph system,
of side-bars provided with traction and safety wheels, a rack, a strut between
said side-bars and engaging with a roller centrally mounted on the frame of the
instrument, guiding devices, paper rollers and feed rollers, and their actuating
devices, substantially as shown and for the purposes set forth.
112. In a paper carriage for a printing telegraph the combination with the
side-bars O, of the strut o, the guide-wheel oo, journalled on a fixed support
located centrally with reference to the excursion of said carriage, the bearing
wheels o', the track o, and the safety-wheels o, substantially as and for the
purposes set forth.
113. In a printing telegraph, the combination of a suitably driven type-wheel
shaft, mechanical and electrical devices actuated by alternating currents in a
battery circuit, type-wheels adjustably mounted on said shaft, an unison device,
an unison cut-out arm mounted on a shaft revolving synchronously with said
type-wheel shaft for breaking a local circuit at the unison position of the type-
wheel shaft, a sunflower provided with insulated contacts equal in number to the
characters on each of said wheels and sunflower brushes included in said circuit,
two series of keys normally in closed circuit through said sunflower, the keys of
one series connected to each sunflower contact and adapted to break said line

page_text: circuit to its corresponding key in the other series, and to close the line circuit
through a resistance and the keys of the other series adapted to break said line
through a sunflower contact electrically connected with said keys, substantially
as set forth.
114. In a printing telegraph system, the combination of a type-wheel shaft
driven by suitable power, a line battery. circuit, mechanical and electrical devices
actuated by alternating currents in said circuit, type-wheels adjustably mounted on
said shaft, a double contact neutral relay included in said circuit, a local battery
circuit closed through the front contact of said relay and through an interrupter
and in parallel circuit through shifting and printing magnets, an unison cut-out
adapted to break said local battery circuit at the unison position, a sunflower, two
brushes and two series of normally closed circuit keys in said line battery circuit,
substantially as and for the purposes set forth.
115. In a printing telegraph system employing two type-wheels, a line battery
circuit, an unison key, sunflower devices, a double contact neutral relay connected
in said line battery circuit and unison devices, in combination with a local battery
circuit, type-wheel shifting and printing magnets and an unison cut-out included in
said local battery circuit adapted to be closed by the front contact of said relay
through said cut-out, shifting and printing magnets by closing said line circuit and
through the back contact of said relay and through said printing magnet by
interrupting said line circuit, substantially as set forth.
116. In a paper carriage for printing telegraphs, the combination of a lower
track, two bearing wheels traversing the same and safety wheels engaging below
said track, a single guide-wheel centrally located in relation to the excursion of
said carriage and traversed by a strut embraced between the side-frames of the
carriage, substantially as and for the purposes set forth.
117. In a printing telegraph system, a double contact neutral relay included in a
line battery circuit traversed by alternating currents, in combination with a
printing magnet operated by a local battery, the circuit of which is closed through
a circuit interrupter and one contact of said relay and a shifting magnet in said
local circuit closed through said interrupter and the other contact of said relay,
substantially as and for the purposes set forth.
118. In a printing telegraph system, a double contact neutral relay included in a
line battery circuit traversed by alternating currents, in combination with a printing
magnet operated by a local battery the circuit of which is closed through an
interrupter and one contact of said relay and a shifting magnet operated by a
local battery, the circuit of which is closed through an unison cut-out, said
interrupter and the other contact of said relay, substantially as and for the
purposes set forth.
119. In a printing telegraph system, a double contact neutral relay included in
a line battery circuit traversed by alternating currents, in combination with a
printing magnet operated by a local battery, the circuit of which is closed through
an interrupter and one contact of said relay, a shifting magnet operated by a
local battery, the circuit of which is closed through an unison cut-out, said
interrupter and the other contact of said relay and electrical devices operated
by the lever of said shifting magnet to close in parallel the local battery circuit
through said printing and shifting magnets, substantially as and for the purposes
set forth.
120. In a hammer for printing telegraphs, the combination of a rod moving
freely through a tube supported by a standard, a printing hammer attached to
said rod, a retracting-spring attached to said rod, a lever carrying a reciprocating
pawl to actuate said rod, a printing magnet, its armature, lever and retracting-
spring, a link connected with said lever and actuating a rock-shaft, a lever
secured to said shaft and having a reciprocating pawl operating when said magnet,
is energized to cause the hammer to strike a blow and recoil and when
demagnetized to cause the pawls to pass one another, substantially as and for
the purposes set forth.

page_text: 121. In a printing telegraph system, the combination, in a combined transmitting
and receiving instrument, of a sunflower device in a single line battery circuit
traversed by alternating currents, a brush or trailer maintaining closed circuit in
passing insulations between segments of said sunflower device, two series of keys,
the adjacent keys in each series connected to the same segments of said sunflower
device and normally closing said battery circuit, a resistance, means for including
the same in said circuit when a key of one series is depressed and electrical devices
for interrupting said circuit in the other series by the depression of a key, substan-
tially as and for the purposes set forth.
122. In a printing telegraph system, a sunflower device in a single line battery
circuit traversed by alternating currents, a split brush maintaining closed circuit
while passing insulations between segments of said sunflower device, two series of
keys, the adjacent keys in each series connected to the same segment of said sunflower
device and normally closing said battery circuit, a resistance and means for including
the same in said circuit when a key of one series is depressed, and electrical devices
for interi upting said circuit by the depression of a key in the other series, substan-
tially as and for the purposes set forth.
123. In a printing telegraph system having combined transmitting and receiving
instruments, a sunflower device in a single line battery circuit, a brush or trailer
maintaining a close circuit while traversing insulations between segments of said
sunflower device, two series of keys, a resistance in electrical connection with
circuit closing devices of said keys and a relay included in a branch circuit, the
said relay adapted to momentarily break said circuit and then suddenly close said
circuit by the depression of a key adapted to interpose said resistance therein,
substantially as and for the purposes set forth.
124. In a printing telegraph system, a source of electric energy and circuit,
combined transmitting and receiving instruments looped in said circuit and cach
provided with a sunflower device, a brush or trailer adapted to maintain close circuit
while traversing insulations between the sunflower segments, two series of keys
electrically connected with said sunflower device adapted to interpose resistance
and to break said circuit, a relay located at said instruments and included in said
circuits, electrical and mechanical devices at a station for alternating the polarity of
the current and arresting devices controlled by a relay included in said line circuit
and responding to keys in each transmitting instrument, substantially as and for the
purposes set forth.
125. In a printing telegraph system, an auxiliary battery at a station in a linc
battery circuit, alternating devices, a relay operating to break at its front contact
a local battery circuit to arrest said alternating devices and to close at its rear
contact the circuit of said auxiliary battery to said alternator in parallel circuit
with said line battery circuit, whereby the current in line is reinforced after the
alternating devices have been arrested by the interposition of resistance in said line
battery circuit, substantially as and for the purposes set forth.
126. The combination, in a printing telegraph system, of a source of electric
energy, an auxiliary battery at a station in a single line, alternating devices
included therein, a local battery circuit, a relay adapted to break at one of its
contacts said local circuit to arrest said alternating devices and to close at the
opposite contact of said relay said auxiliary battery circuit to said alternating
device at said station in parallel with said line, whereby the current in said line is
reinforced after the alternating devices have been arrested by interposing resistances
in said circuit, substantially as and for the purposes set forth.
127. The combination, in a printing telegraph system, of a source of electric
energy and circuit, an auxiliary battery located at a terminal station, electrical and
mechanical alternating devices thereat, a local battery circuit controlled by a relay
included in eaid line circuit, detent and unison electro magnets for arresting
said alternating devices thereat, substantially as and for the purposes set forth.
128. The combination, in a printing telegraph system, of a source of electric
energy and circuit, an auxiliary battery located at a terminal station, a nolarized

page_text: escapement, electro-magnetic unison and arresting devices, a local battery circuit for
controlling said devices and a relay included in said line battery circuit, substan-
tially as and for the purposes set forth.
129. The combination, in a printing telegraph system, of a source of electric
energy and line circuit, an auxiliary battery located at a station, a polarized
escapement and devices automatically controlling said alternating devices, electro-
magnetic unison and arresting devices, a local battery circuit for controlling said
devices and a relay included in said line circuit, substantially as and for the purposes
set forth.
130. The combination, in a printing telegraph system, of a source of electric
energy, a single line, an auxiliary battery located at an alternating station, a
polarized relay in said line, magnetic devices, a local battery closed through said
magnetic devices by said relay and automatically controlling said alternating device,
substantially as and for the purposes set forth.
131. In a single line printing telegraph system, a station provided with a source
of electric energy, electrical and mechanical devices for alternating the polarity of
the current in a single line, arresting mechanism for controlling the alternating
devices, a relay included in said line and responding to varying conditions therein,
transmitting and receiving instruments looped in said line, local battery_circuits,
polarized relays at said instruments in said line and closing said local batteries
through escapement magnets, a neutral relay at each instrument included in said
line and adapted to close at its front contact in consequence of a weak current in
said line said local battery circuits in parallel through the shifting and printing
magnets, and to close at its back contact when said line is broken the local circuits
through only the printing magnets, substantially as and for the purposes set forth.
132. In a single line printing telegraph system operating by alternating currents,
the combination of a line battery, alternating and arresting devices in said line,
telegraph instruments looped in said line and each having two type-wheels, a
sunflower and keys in closed circuit therewith through the sunflower brush, and
arranged when depressed to break the line circuit or to introduce resistance therein,
electrical devices substantially such as described, for rotating the type-wheels, for
shifting the same and for causing impressions to be effected therefrom, a key to
arrest the alternator and all instruments in line to effect impressions on one type-
wheel, a resistance interposed in said line to arrest said alternator and all the
instruments in line and to shift the second type-wheel to the plane occupied by the
first and effect impressions therefrom in the same line of printing, substantially as
set forth.
133. In a single line printing telegraph system, a station provided with a source
of electric energy and circuit, electrical and mechanical devices for alternating the
direction of current in said single main line, arresting devices controlling alternating
devices at said station and a relay thereat responding to varying conditions in the
line, transmitting and receiving instruments looped in said line, local battery
circuits, polar-relays at each instrument controlling said local battery circuits
through escapement magnets, local printing batteries, a neutral relay included in
said line at each instrument and to control said local printing battery circuits
through shifting and printing magnets, a sunflower device and two series of keys
included in a closed line, substantially as and for the purposes set forth.
134. In a single line printing telegraph system, the combination with a station
provided with mechanical and electrical devices to alternate the direction of a
current, of a source of electric energy, arresting devices for controlling said
alternating device and a relay included in the line at said alternator, transmitting
and receiving instruments looped in said line and each provided with a local printing
battery and a neutral relay, the relay adapted to close the local circuit at the front
contact thereof and an interrupter in parallel through shifting magnets, electrical
devices, a shifting lever and printing magnets to cause an impression to be made
from type-wheels normally held in an inoperative position in said transmitting and
receiving instruments, substantially as and for the purposes set forth.

page_text: 135. In a single line printing telegraph system, the combination of a station
proviled with electrical and mechanical devices to alternate the direction of the
current, of a source of electric energy and a circuit, arresting devices controlled by
a relay responding to different conditions in said line circuit, transmitting and
receiving instruments looped in said line circuit and each provided with a sunflower
device, two series of keys in said closed line circuit, neutral relays thereat to close
local circuits through an interrupter, an unison cut-out and in parallel through
shifting-magnets, electrical devices on shifting lever and printing magnets to cause
a type-wheel to be presented to impression devices and a character to be recorded,
substantially as and for the purposes set forth.
136. In a printing telegraph, the combination in receiving and transmitting instru-
ments, of an unison latch, a printing magnet and armature, its lever provided with
an extension, a bell-crank lever and a rod connected therewith and adapted to
release said unison latch, substantially as set forth.
137. In a printing telegraph receiving and transmitting instrument, the com-
bination of an unison device, a printing magnet, its armature and lever, a bell-crank
lever and a vertical rod sliding in bearings and resting on said bell-crank lever and
adapted to release said unison device at cach impression, substantially as set forth.
138. In a printing telegraph receiving and transmitting instrument, the com-
bination of a shaft, an unison device mounted thereon and a latch and spring
therefor, a printing magnet energized by a local battery circuit controlled by a
neutral relay included in a line battery circuit, its armature and lever, and means
adapted to release the latch of said unison device at each impression, substantially
as set forth.
139. In a printing telegraph receiving and transmitting instrument, the com-
bination of printing and shifting magnets, local battery circuits, a neutral relay, a
line battery circuit, an unison device, a type-wheel shaft and the armature lever of
said printing magnet adapted to release said unison device, substantially as and for
the purposes set forth.
140. In a printing telegraph receiving and transmitting instrument, the com-
bination of a printing magnet, a hammer operated by the armature lever of said
magnet by the intervention of reciprocating pawls mounted on levers actuated by a
rock-shaft from said armature lever and a recoil spring around the stem of the
hammer, substantially as shown and set forth.
141. In a printing telegraph transmitting and receiving instrument, the com-
bination of a printing magnet P, and an impression device consisting of a printing
hammer, mounted on a stem 1,3, lever ³, pawls 21 and p, spring, arm ",
rock-shaft p, arm p, link p" operated by the armature lever p', of said printing
magnet P, substantially as and for the purposes set forth.
142. In a printing telegraph transmitting and receiving instrument, the com-
bination of a printing magnet, a paper carriage, devices substantially as described,
for advancing the paper carriage, means for releasing the same at any point in its
excursion and consisting of a cam mounted on the type-wheel shaft and adapted to
actuate a lever and a pivoted strut to cause said strut to be interposed in the path
of a pin on the printing armature lever and said strut pivoted to a bell-crank lever
impinging against a bent-lever having projections adapted to engage with the pawl
and detent of said advancing-device, and means to return said carriage to its initial
position, substantially as and for the purposes set forth.
143. In a printing telegraph system, transmitting and receiving instruments and
each provided with a paper-carriage, advancing, releasing and returning devices,
magnetic-devices and type-wheels, the type-wheels having a blank space at the
releasing position corresponding with a cam on a shaft moving synchronously with
the type-wheels and operating by means, such as described, to release the pawl and
detent of said advancing device by the attraction of the armature of said inagnetic
device, substantially as and for the purposes set forth.
144. In a printing telegraph system, transmitting and receiving instruments
provided with local battery circuits, printing and shifting magnets included therein,

page_text: a neutral relay interposed in a single line battery circuit, a paper-carriage at each
instrument, advancing, releasing and returning devices for said paper-carriage, the
releasing devices comprising an arm mounted on a shaft moving synchronously
with the type-wheels of the instruments and a lever adapted to engage with pawls
of said advancing device to release the same, a blank space on each of the type-
wheels corresponding with the position of said arm, a sunflower-device comprising a
number of segments, one of which corresponds to the blank spaces on said type-
wheels, electrical and mechanical devices adapted to arrest the type-wheels at said
space and to energize the printing-magnet, substantially as and for the purposes
set forth.
145. In a printing telegraph system, transmitting and receiving instruments com-
prising a paper-carriage, advancing, releasing and returning devices, magnetic
impression devices, type-wheels, a sunflower device and keys, the releasing devices
comprising a cam mounted on a shaft moving synchronously with the type-wheels
and adapted to actuate a lever to disengage said advancing device at any point in
the excursion of the paper-carriage, a blank space on the type-wheels corresponding
with the position of said cam and a contact segment of said sunflower device, a key
to interpose resistance or to break a line battery circuit through said sunflower
contact segment to operate means controlling the magnetic impression devices,
substantially as and for the purposes set forth.
146. In a printing telegraph, transmitting and receiving instruments, the com-
bination of a paper-carriage, advancing and releasing mechanism therefor, the
releasing mechanism consisting of the cam f, rod f¹, lever f³, trunnion f³, a link
connection f, a pivoted strut f, bell-crank lever, bent lever provided with
pins 10 and 11, and adapted to release the pawl ps and detent p₁ by the attraction
of the armature p', of the lever p, substantially as and for the purposes set
forth.
147. In a printing telegraph instrument, the combination of the vertical side
plates a' and u³, the bevelled and recessed bar a, forming a strut between said
plates, and recessed for the type-wheels B, B¹, the rear plate a, the removable
glass top and front a³, the cover plate a³, the drum a and its shaft mounted
in bearings secured to the top plate A, substantially as and for the purposes
set forth.
148. In a printing telegraph instrument the combination of a positively driven
shaft, type-wheels mounted on a sleeve moving loosely on said shaft, a cross-arm
with pins projecting from the same and attached to said shaft, said pins adapted to
pass through apertures in said wheels, to prevent said sleeve from turning on said
shaft and a spring connected with said cross-arm and said wheels, substantially as
shown and for the purposes set forth.
149. In a printing telegraph instrument, the combination of a shaft, means
substantially such as described for actuating the same, a sleeve mounted thereon,
type-wheels attached thereto, a cross-arm rigidly attached to said shaft and
provided with pins passing through said type-wheels and a spiral spring attached
to said cross-arm and type-wheels to take up lost motion between said pins
and the openings in said type-wheels, substantially as and for the purposes
set forth.
150. In a printing telegraph instrument, the combination of a shaft driven by
suitable power, a sleeve loosely mounted on said shaft, type-wheels attached thereto,
a forked lever engaging in a groove in said sleeve, a rod connected with said forked
lever and adapted to slide in fixed guides, a cross-arm rigidly attached to said
shaft and provided with pins passing through said type-wheels and a spring attached
to said cross-arm and type-wheels, substantially as set forth.
151. In a printing telegraph instrument, the combination of a shaft driven by
suitable power, a sleeve loosely mounted in said shaft, type-wheels attached thereto,
a forked lever engaging in a groove in said sleeve, a rod connected with said forked
lever and adapted to slide in fixed guides, a cross-arm rigidly attached to said
shaft and provided with pins passing through said type-wheels, a spring attached

page_text: to said cross-arm and type-wheels, a shifting magnet, its lever, armature and
retracting-spring, and said armature-lever pivotally connected with said sliding-rod,
substantially as and for the purposes set forth.
152. In a printing telegraph instrument, the combination of a shaft driven by
power, a sleeve loosely mounted on said shaft, type-wheels attached thereto, a
forked-lever engaging in a groove in said sleeve, a rod connected with said forked-
lever and adapted to slide in fixed guides, a cross-arm rigidly attached to said
shaft and provided with pins passing through said type-wheels, a spring attached
to said cross-arm and type-wheels, a shifting magnet and its actuating devices.
a line battery circuit, a sunflower-device and keys adapted to interpose resistance
and interrupt said line battery circuit, substantially as and for the purposes
set forth.
153. In a printing telegraph instrument, the combination of a shaft driven by
power, a sleeve loosely mounted on said shaft, type-wheels attached thereto, a
forked-lever engaging in a groove in said sleeve, a rod connected with said forked-
lever and adapted to slide in fixed guides, a cross-arm rigidly attached to said
shaft and provided with pins passing through said type-wheels, a spring attached
to said cross-arm and type-wheels, a shifting magnet and its actuating devices, a
line battery circuit, a sunflower-device, keys adapted to interpose resistance and to
interrupt said line battery circuit, a local battery circuit and a relay included in
said line battery circuit, a printing magnet included therein and its actuating
devices, and said relay closing in multiple arc, or in parallel the circuit of said
local battery through said printing and shifting magnets, substantially as and for the
purposes set forth.
154. In a printing telegraph instrument, the combination of a positively driven
type-wheel shaft provided with a sleeve carrying two type-wheels, a cross-arm
attached to said shaft and provided with pins, a spiral spring attached to said cross-
arm and one of the type-wheels, to force the latter in one direction, substantially as
and for the purposes set forth.
155. In a printing telegraph instrument, the combination with a type-wheel shaft
provided with a sleeve carrying two type-wheels, a cross-arm attached to said
shaft and provided with pins, a spiral-spring attached to said cross-arm and one of
said type-wheels, of an inking roller, frame and spindle, substantially as and for the
purposes set forth.
156. In a printing telegraph system, a key-board provided with two series of
keys adapted to maintain a closed line circuit, adjacent keys of both series
electrically connected with each other and one series constructed so as to break
said line and the other adapted to interpose resistance in said line, substantially as
and for the purposes set forth.
157. In a printing telegraph instrument, a key-board provided with two series
of keys adapted to maintain a closed line battery circuit, adjacent keys of both
series electrically connected with each other and with a sunflower-device, one series
adapted to close said line battery circuit and the other adapted to interpose
resistance in said closed line battery circuit, substantially as and for the purposes
set forth.
158. In a printing telegraph system provided with combined transmitting and
receiving instruments operated by alternating currents in a single line through
polar-relays and a closed line circuit at each instrument, in combination with
escapement-magnets having neutral armatures controlling type-wheels by the currents
of a local battery circuit at each instrument closed by said polar-relay, a double
contact neutral relay interposed in said single line battery circuit traversed
by weak currents to close local battery circuits by one of its contacts in
parallel through shifting and printing magnets, substantially as and for the
purposes set forth.
159. A printing telegraph system provided with combined transmitting and
receiving instruments operated by alternating currents in a single line through
polar-relays and a closed line sunflower circuit at each instrument, in combination

page_text: with escapement-magnets having neutral armatures controlling the type-wheels by
currents of a local battery at each instrument closed by said polar-relay and a
double contact neutral relay interposed in said single line battery circuit and said
relay responding to breaks in the line to close a local battery circuit through
printing magnets, substantially as and for the purposes set forth.
160. A printing telegraph system provided with combined transmitting and
receiving instruments operated by alternating currents in a single line through
polar relays and a closed line sunflower circuit at cach instrument, in combination
with escapement-magnets controlling type-wheels by currents of a local battery
at each instrument closed through the contacts of said polar relay, a double contact
neutral relay interposed in said single line to close local battery circuits by one of
its contacts in parallel through shifting and printing magnets, substantially as and
for the purposes set forth.
161. In a printing telegraph system, combined transmitting and receiving
instruments operated by alternating currents in a single line through escapement
magnets with polar armatures controlling type-wheels by line currents and a double
contact neutral relay interposed in said single line, traversed by weak currents to
close local battery circuits by one of its contacts in parallel through an interrupter,
shifting and printing magnets, substantially as and for the purposes set forth.
162. A printing telegraph system provided with combined transmitting and
receiving instruments operated by alternating currents in a single line through
escapement-magnets with polarized armatures controlling type-wheels by line
currents and a double contact relay interposed in said single line traversed by weak
currents to close local battery circuits by one of its contacts, an interrupter, an
unison cut-out and in parallel through shifting and printing magnets, substantially
as and for the purposes set forth.
163. A printing telegraph system provided with combined transmitting and
receiving instruments operated by alternating currents in a single line through
escapement-magnets with polarized armatures controlling type-wheels by line
currents, a double contact neutral relay interposed in said single line and responding
to breaks in said line to close local battery circuits through one of its contacts, an
electro magnetic interrupter included in the line battery circuit and a printing
magnet in the local circuit, substantially as and for the purposes set forth.
164. A printing telegraph system provided with combined transmitting and
receiving instruments operated by alternating currents in a single line, through
polarized relays and a sunflower-device, escapement-magnets with neutral armatures
for controlling the type wheels energized by local battery currents closed by said
polarized relay, a double contact neutral relay interposed in said single line and
responding to breaks therein to close a local battery circuit through an interrupter
and a printing magnet, substantially as and for the purposes set forth.
165. In a printing telegraph system provided with combined transmitting and
receiving instruments operated by alternating currents in a single line through
escapement-magnets with polarized armatures and controlling type-wheels by line
currents, a double contact neutral relay interposed in said single line traversed by
weak currents to close local battery circuits by one of its contacts, an interrupter
and in parallel through a shifting magnet by an arm of the shifting armature lever
through a printing magnet, substantially as and for the purposes set forth.
166. In a printing telegraph system provided with combined transmitting and
receiving instruments operated by alternating currents in a single line through
polarized relays and escapement magnetic devices having neutral armatures for
controlling type-wheels energized by local battery currents closed by said polarized
relay, a double contact neutral relay interposed in said single line and responding
to weak currents therein to close local battery circuits through one of its contacts,
an interrupter and an unison cut-out in parallel through a shifting magnet and by
an arm of the shifting armature-lever through a printing magnet, substantially as
and for the purposes set forth.
167. In a printing telegraph system, the combination of a paper carriage provided

page_text: with side-bars, paper and feed rollers, a track-rail secured between said side-bars,
said rollers located above the plane of the type-wheels, substantially as set forth.
168. In a printing telegraph system, the combination of a paper carriage
provided with a segmental bell crank lever engaging with a rack and adapted to
revolve a feed roller step by step to feed between lines, substantially as and for the
purposes set forth.
169. In a printing telegraph system, the combination in a paper carriage, of a
fixed arin provided with an adjustable device, a segmental bell crank lover, a rack,
a sliding-bar and pawl, a ratchet wheel and feed rollers, substantially as and for the
purposes set forth.
170. In a printing telegraph transmitting and receiving instrument, the com-
bination of a local battery circuit, a printing magnet, impression devices, a
printing hammer operated by the armature lever of said printing magnet through
the intervention of reciprocating pawls mounted on levers actuated by a rock-shaft
from said armature lever, a recoil spring around the stem of said hammer, a double
contact neutral relay interposed in a line battery circuit, and adapted to control
said local circuit, whereby said hammer is caused to deliver a quick blow by the
attraction of the armature of said printing maguet, when energized by said local
battery circuit and to recoil by the force of said spring to its normal position
through the breaking of said local battery circuit, substantially as set forth.
171. In a printing telegraph receiving and transmitting instrument, the combina-
tion of a printing magnet, a hammer operated by the armature lever of said magnet
by the intervention of reciprocating pawls mounted on levers actuated by a rock-
shaft from said armature lever and a recoil spring around the stem of said hammer,
substantially as shown and set forth.
Dated this Sixth day of March AT 1891
SAMUEL RUSH LINVILLE.
LOUIS FREDERICK HETTMANSPERGER.
W. P. Thompson & Boult,
Agents for the Applicants.