Improvements in Printing Telegraph Receiving Instruments.
Year: 1891

page_text: Date of Application, 16th Dec., 1891-Accepted, 12th Mar., 1892
COMPLETE SPECIFICATION.
[Communicated from abroad by JOHN EDWARD WRIGHT, of 21, Ann Street,
New York, United States of America, Electrician.]
Improvements in Printing Telegraph Receiving Instruments.
I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & Co., Patent Agents,
45 Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement:
This invention relates to printing telegraph receiving instruments, and comprises
certain new and useful improvements therein which, while applicable generally to
instruments of this kind are more especially designed for use in that particular
class of receivers which print the letters and characters in columns or successive
rows.
The main object of the invention is to relieve the electro-magnets which are
operated by or connected with the main line, of as much load or work as possible,
which object is accomplished by the use of a suitable motive power independent of
the magnets for effecting the mechanical operation of the several parts of the
printing and feed mechanism, and by utilizing the electro-magnets merely for
releasing, arresting, and generally, for controlling the action or operation of the
said motive power.
The mechanism, as a whole, involves the several instrumentalities heretofore
employed in devices of this character, that is to say, the proper electro-magnets,
together with devices for rotating the type-wheel to bring the proper characters
thereon to the printing position, for impressing or printing the characters and for
effecting the proper feed movements for letter and line spacing, but the
distinguishing features of the present invention are in the novel character of these
instrumentalities.
The type-wheel employed has four rows or series of characters, and is combined
with means for raising or lowering the same for the proper alignment of any one of
such rows or series. The said type wheel is moreover, constructed to oscillate and
In combination with
thereby print or impress the character on or in the paper.
the type-whcel and the feed devices is a power driven shaft adapted to operate the
same in proper order or succession through the instrumentality of cams or similar
devices, and various other novel details of construction present which will be
described more fully herein by the aid of the drawings and more particularly
indicated in the clains.
The inking mechanism consists of a felt-covered wheel against which the four
rows of type on the type-wheel rest in contact at all times except when the type
wheel is thrown over to make the impression. The printing roller is mounted
loosely on a standard on the type wheel carriage and revolves with the type wheel
when the latter is turned. When the type wheel is raised vertically it merely slips
over the surface of the inking roller. This mechanism is of the kind generally
used in almost all forms of printing telegraphs of this kind, and a further description
of the same is therefore unnecessary.
In the accompanying drawings
Figure 1 is a general top plan view of the principal operative parts of the
machine.
Figure 2 is a similar plan view in which for greater clearness all of the magnets
but one, and certain of the upper parts of the apparatus are omitted.
Figure 3 is an end view of the instrument in elevation.
Figure 4 is a detail of the type-wheel escapement.
Figure 5 is a vertical cross-section of the instrument.

page_text: Figure 6 is an enlarged sectional detail of the type-wheel shaft and its bearings.
Figure 7 is an enlarged detail of a device forming part of the letter feed
mechanism.
Figure 8 is an elevation of the releasing device shown in broken section in
Figure 5, and from the direction of view indicated by the arrow in the latter
figure.
Figure 9 is a front elevation and part section of the instrument.
Figures 10, 11 and 12 are details of mechanism detached from the instrument,
the nature of which will be hereinafter pointed out.
Figure 13 is an elevation of part of the machine illustrating the action of the
mechanism for raising and lowering the type-wheel.
Figure 14 is a part of the same detached.
The various parts of the instrument are supported by a base A, side plates A', A',
and suitable cross-bars or braces, but the specific construction and arrangement of
the said parts with reference to this or any other proper means of support is largely
immaterial.
The main or signalling line includes three electro-magnets. One, a sensitive
magnet B, that responds to the shortest impulses of current, whether weak or
strong, and which is used in connection with the type-wheel escapement; another,
a magnet C somewhat sluggish in its action, and not therefore, affected by a very
short impulse of current, but sensitive to any prolonged impulse, and which is used
as a relay magnet in connection with the controlling magnet M for the motive
power, and the third, a magnet D, the function of which is to control certain
devices for varying the elevation of the type-wheel and which' requires for its
operation a stronger current than is necessary for either of the others."
MECHANISM FOR ROTATING THE TYPE-WHEEL TO PRESENT ANY DESIRED
CHARACTER OF A GIVEN ROW ΤΟ THE PAPER IN THE PRINTING
POSITION.
A is a three-cornered horizontal shaft (Figures 1, 5 and 9), with bearings at
opposite sides of the instrument. An extension a of this shaft is round and its
pointed end has a bearing in the end of the escapement shaft a'. This shaft is
connected by friction with a pulley a" which is constantly rotated by an inde-
pendent motor.
The tendency to rotation which is thus imparted to the escapement shaft a', is
controlled by the armature 6 of the magnet B acting as a pawl and oscillating
between the two ratchet-wheels . Thus the shaft a' may be brought to any
desired position corresponding to a given letter by sending through the magnet B
the proper number of alternations or impulses of current.
In the shaft a¹ is set a stud or bevelled projection 6, and when the said shaft
has been brought to the desired position a sleeve B₁ on the extension a that is
formed as a double cam at its end and which moves longitudinally on the shaft a
but turns with it, is shifted by a lever B" engaging with it, into engagement with
the stud . The cam sleeve, and with it the shaft A", is thereby turned in one
or the other direction through an arc of greater or less extent, according to the
relative positions of the cam sleeve and stud 6" before engagement. This rotary
movement of the shaft A is imparted to the type-wheel by bevel gear-wheels c, c,
one of which slides along the shaft A" while the other is connected with the
vertical type-wheel spindle, as hereinafter set forth. In this way, by giving to the
end of the cam-sleeve B a proper form, the type-wheel may be turned in one
direction or the other from any given point to present a selected character for
printing, and is never turned more than a half revolution.
THE TYPE-WHEEL AND ITS CARRIAGE.

page_text: or rubber-faced type and indicated by the numerals 1, 2, 3, 4. This cylinder is
fixed to a vertical spindle C", the lower end of which passes through a slotted
plate over a stop Di fitted to, and adapted to be moved freely along a guide rail
or bar D, by the transverse movement of the spindle C".
The spindle C passes through a vertical sleeve or cylinder d, which is capable
of rotation about its longitudinal axis. The bearings for the sleeve d are at the
ends in plates d', which are secured to the type-wheel carriage, the frame of which
is designated by d", ". Said carriage is provided with rollers e that travel on
guide-bars elle
which
The spindle passes freely through a ball E (see Figure 6) works
in a socket E' inside the sleeve d and which turns with the sleeve horizontally.
A vertical groove is formed in the side of spindle C" into which extend's a
pin fixed in the ball E and extending into a vertical slot f" in the socket E¹.
It will thus be seen that the spindle C, while it revolves with the sleeve d
that carries the bevel gear c and receives rotary motion from the shaft A" is
capable of a free movement of limited extent vertically through said sleeve,
and being of smaller diameter than the bore of the sleeve, is also capable of
oscillation within said sleeve in a given vertical plane, the centre of oscillation
being the ball joint. The elevation of the spindle or its vertical position with
reference to the sleeve obviously depends upon the position of the step D' and
bar D by which its lower end is supported.
A bifurcated lever F is pivoted to the type-wheel carriage, as shown at F¹, in
Figure 13, and the end of this lever extends downward into the path of a swinging
frame, which depresses it when an impression is to be made. The lever F carries
a light spring that bears upon the type-wheel carriage and retracts the lever
after each impression. The said lever is also provided with a tooth g', which when
the lever is depressed enters a recess or slot in a cylinder g" on the lower part of
the spindle C and locks the spindle against any rotary or lost movement.
g
This perforated cylinder or cage is made to correspond with the type-wheel,
and has four rows of holes so that when the lever F is depressed the tooth g¹ will
enter that hole which corresponds to the character to be impressed or printed.
The depression of the lever F has also the effect of throwing the type-wheel
over against the paper, which is carried on a roller C and printing the letter
that is presented at the printing point. On the retraction of the lever F, the
spindle C and the type-wheel thercon adjust themselves at once to their normal
position. A small flat spring his placed on the step D¹ and being bent by the
displacement of the end of the spindle from the centre of the step exerts
sufficient force to return the same when released from engagement with the
lever F.
THE FEED MECHANISM FOR THE TYPE-WHEEL CARRIAGE.
G, Gare two rack-bars that extend across the instrument parallel to the
path of the type-wheel carriage. One of said bars, as G" is stationary, while
the other, being supported by the pins h, passing through slots " (Figure 9)
is capable of limited longitudinal movement, equal to the space between two
teeth. This rack-bar is arranged, as will be hereinafter described, to be recipro-
cated through such space every time that the magnet C is energized. Between
arms H, depending from the type carriage (Figures 1, 5 and 7) are pivoted
two pawls which are in engagement with the two racks G, G" respectively.
The reciprocation of the bar G causes, through the instrumentality of these
pawls, the type wheel carriage to advance through the space of one tooth for
each to-and-fro movement of the said bar G', and in this way the letter spacing
or feed is accomplished.
Between the two pawls. i and and with bearings in the arms H, is a pivoted
lever. 1. The upper end j'of this lever carries a light pivoted bark that extends at
right angles and over both pawls iias.shown in Figures 1 and 9. The bar k has

page_text: sufficient range of oscillation to permit either one of the pawls i or to be raised
so as to pass over a tooth, but not both at the same time, so that the carriage can
never move backward unless the bar & be removed from the path of the pawls.
A pawl is pivoted between the other two and to it is fixed a pin or bar " that
extends under both pawls i and i¹. An arm of the lever I extends under the
pawl and when the lever I' is turned about its pivot the oscillating bark is
carried away from the pawls as shown in Figure 7, and the latter are lifted out
of engagement with the racks. The carriage is then free and is returned by a
cord, attached to it and running over a pulley to a spring-barrel.
The lever is turned by a bar H', carried by swinging arms H" and extending
under the lower end of the lever I parallel to its line of travel. When the bar H
is raised by mechanism hereinafter described, it is engaged and retained in an
elevated position by a spring-hook I attached to the side-plate of the instrument.
It is disengaged by the carriage itself, which on reaching the end of its course
strikes the spring or a pin J connected therewith and allows the bar H¹ to drop.
This action immediately drops the pawls into engagement with the racks G' G³.
THE PAPER FEED.
Whenever the type-wheel carriage is thrown back to begin a line the paper is
fed through a sufficient space for the new line. The paper is taken off from a
reel and carried around the printing-roll G. On the shaft of the roll G is a 2
ratchet-wheel with which pawls engage. These pawls are operated by a lever K
to which they are connected by a link. When the lever K is raised, a stud K'
thereon raises the bar H that releases the pawls on the type-wheel carriage, while
at the same time the paper-roll is turned through the space for a line.
THE ACTUATING MECHANISM.
In printing telegraph instruments heretofore, it has been usual to impose upon
the electro-magnets, either in the main or local circuits, a considerable part of the
work of printing, feeding and the like, but the efficiency and capabilities of the
apparatus are by such means necessarily impaired. In the present invention, while
it is evident that some or all of the, several mechanisms herein before described
might be operated by electro-magnets, the object sought is to operate them all
mechanically and to employ the magnet or magnets simply for purposes of control.
The mechanism devised and employed for this purpose will now be described.
A main shaft L is mounted in the frame and is provided with a friction-
pulley L, which in the operation of the machine is designed to be constantly rotated
by a suitable source of power, as for example, a small electro-magnetic motor. The
shaft L is normally locked against rotation by the engagement of a stop L" ou the
shaft L with the end of the armature lever m of a local electro-magnet M, controlled
by the relay magnet C. The said lever m carries also a spring-actuated pawl m',
limited in its movement by a stop m¹. When the armature is attracted to the
magnet M, the end of its lever m is withdrawn from the path of the stop L", and
the shaft L is turned by its frictional connection with the motor. In order to
arrest the shaft after making one revolution, the pawl is used. This pawl is
brought into the path of the stop L" by the movement of the armature lever which
releases the latter, and, receiving the impact of the stop ", it is moved against the
force of its spring until the stop m¹ is encountered. Then upon the return of
the armature lever m the stop L" slides from the pawl m³ onto the end of the
lever m.
When the escapement-wheel is brought by rapid alternations of current to a
proper position for bringing a given character into the printing position the final
impulse of current operates the magnet C and M and releases the shaft L,
permitting the latter to make one revolution.

page_text: will be raised, which, as above described, returns the type-wheel carriage and feeds
the paper.
An instrument constructed in the manner above described combines all the elements
essential to the operation of a type-wheel with a single row of characters or which
has but one vertical position. In the present case, however, it is proposed that
the type-wheel shall have four different positions, which, for convenience, are
designated as the first, or that which has been described, the second, third and fourth
positions.
THE SECOND POSITION.
The electro-magnet D has been described as one requiring a stronger current for
its operation than the magnet. C, and as being connected with the main line. When
a character is to be printed that requires the type-wheel to be in the second position,
the final current impulse that is required to turn the type-wheel horizontally for
the proper alignment of the selected character thereon is sent from additional
battery or through less resistance so that all three of the magnets B, C and D are
energized. The pivoted armature lever R¹ of the magnet D extends through a slot
in the side plate A', and carries at its end a forked extensions that embraces a.
lever R, (Figures 13 and 14).
The lever Ris pivoted to a bracket e¹ by a universal joint, so as to be capable of
swinging both.vertically and horizontally, and its end is provided with a stud or
roller that rides on the periphery of an eccentric S on shaft L. An arm St is
attached to this lever and carries a steadying-roller S that runs on the under side
of the eccentric S. Each revolution of the shaft L, therefore, causes the lever Ru
to rise and fall, but the lever being normally disconnected from the other parts of
the apparatus, no effect is produced thereon.
The bar D, upon which the step D' of the type-wheel spindle travels, is
supported by a rectangular frame T supported by guide-rollers T₁ and capable of
moving freely in a vertical plane. Two pins t and t' are set in one side of this frame.
One of the two pins t stands opposite to a hole in the lever R" when the said
lever and the frame T are in their normal or lowest position.
The stronger current impulse that is sent to print a character on the second row
of type operates the magnet D and shifts the armature lever R', which carries the
lever R with it causing the pint on frame T to enter the hole in said lever. In
consequence of thus connecting the lever R" and frame T, the latter is raised by
the eccentric S and the type-wheel brought to its second position. After the impres-
sion is made, the frame T is lowered and as soon as the magnet D is demagnetized
and its armature retracted, the lever R" is disconnected from the frame T.
THE THIRD POSITION.
When a character is to be printed that is on the third row on the type-wheel,.the
Jattan mun fiunt he live1.
and the abovestan
When a character is to be printed that is on the third row on the type-wheel, the
caust first be brought to third position by one operation and the
Latton
printed by another.
have
A light bar T is pivoted to the frame T and extends out through a slot in the
side plate A. The end of this bar is connected by a link u, (Figure 3) with a
bell-crank lever u pivoted to the side plate A" and provided with a stop u".
Under the bar T" is mounted a lever U, one end of which bears against the under
Bide of the bar, while the other carries an anti-friction roller that rides on the
periphery of an eccentric U' on the shaft L. The lever U is oscillated: by the
rotation of the shaft L.and raises and lowers the bar Tu but the end of this bar to
which is connected the link u and bell-crank lever being free to move, the bar
merely oscillates about its pivotal point on the frame T without producing. any, effect
on the other parts of the apparatus..
น
The escapement-shaft as as has been above described, carries the pin which
is in line with the stud' and hence never encountered by the.cam-sleeve Bl. To
raise the type-wheel to the third position the escapement-shaft is turned until this.

page_text: pin is brought into the path of the stop ull on the oscillating bell-crank lever n'.
The shaft L being then released by the magnet M, the eccentrics impart
the movements above described to the several levers, but since the bell-crank
lever is prevented from rising, the lever T" instead of swinging on the frame T
in its upward movement lifts said frame bodily and with it the bar D and the
type-wheel until the bar is engaged by a catch 1, (Figures 1 and 2) which retains
it in an elevated position after the other parts have dropped back into their normal
position. The type-wheel is now in its third position, and remains so until by a
special operation it is shifted to another.
MECHANISM FOR RESTORING TYPE-WHEEL FROM THIRD TO FIRST
POSITION.
The catch is a small lever pivoted to a stationary support, and held normally
in the path of the bar D". The engaging end, however, is bevelled on the under
side so that as the bar D" rises, it forces aside the catch, but when the latter slips
under the bar it prevents its descent. A plate, shown in Figures 1, 2 and 3, is
connected to one end of the catch lever 1, and a spiral spring o' attached to the
said, plate and the frame of the instrument respectively serves to maintain the
catch in its normal position. A. pin set in the plate we projects through a slot in
the side plate A¹
The lever P, (Figure 3) has pivoted to it a small lever a, the upper end of
which is in the plane of the revolution of the pin on the escapement-shaft. A
light spring bears on the lever and maintains its lower end out of engagement
with the pin all which extends through the plane of its oscillation.
If it be desired to shift the type-wheel from the third, to the first position, the
escapement is set so that the pin will encounter the end of lever as the latter
oscillates with the lever P. When this is done the lever will be turned on its
fulcrum and its lower end will force the pin to" and plate wo forward, thus with-
drawing catch from engagement with the bar D" and permitting the latter to
fall back to the normal position.
It may be observed that while both the raising of the type-wheel to the third
position and restoring it to its normal position, involve a revolution of the shaft L
and the consequent operation of the feeding and printing mechanism, no impression
is made if blanks be left on the type-wheel in positions corresponding to the said
positions of the escapement-shaft, but the type-wheel will be moved or fed one
letter space. By a proper distribution of small letters, capitals and figures among
the several rows on the type wheel, no appreciable delay in the operation of the
instrument will result from this plan of shifting the type-wheel.
The type-wheel remains normally in the first position and drops after each
impression from the second to the first. When once brought to the third position
it remains there as has been explained, unless by a special operation it is returned
to the first. It may be raised from the third to the fourth position but after each
impression it drops back to the third in the same way that it returns from the
second to the first position.
THE FOURTH POSITION.
The lifting of the type-wheel from the third to the fourth position is effected by
the magnet D and lever R". When the type-wheel is in the third position, the
elevation of the frame T brings the pin into the position normally occupied by
pin with relation to the lever R₁ hence if the magnet D be energized, the
lever R will be brought into connection with the frame T by the pin t
entering the hole t" and the frame and type-wheel will be raised to the fourth
position.

page_text: printing of characters according to the particular manipulation of the same by an
operator, so that a high rate of speed of transmission is secured.
The invention is not limited to the special construction of the various
elements described, for it is evident that these may all be varied to a very great
degree.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated to me
by my foreign correspondent I declare that what I claim is
First. In a printing telegraph receiver, the combination of a continuously acting
motor, an escapement impelled thereby a magnet for determining the extent of
movement of the 'escapement, a rotary type-wheel, a cam intermediate to the type-
wheel and escapement a motor for moving the cam and adjusting the type-wheel to
positions corresponding to those of the escapement, and an electro-magnet for
controlling the action or operation of said motor.
Second. In a printing telegraph instrument, the combination with a type-wheel,
and means for setting the same to bring a selected character thereon into printing
position, printing mechanism for taking impressions of the selected characters and
feed mechanism for effecting the necessary spacing for the printed impressions, of
a continuously acting motor, and mechanical connections between said motor, the
impression and the feed mechanism and normally disconnected from motor, and an
electro magnet for establishing and controlling the connection of the motor there-
with, as set forth.
Third. In a printing telegraph instrument, the combination with the type-wheel
and means for setting the same to present different characters at the printing point,
impression mechanism and feed-mechanism, of a shaft provided with eccentrics
adapted when in rotation to move and operate the impression and feed-mechanism
respectively, a continuously acting motor with frictional connection with said
shaft and an electro-magnet for releasing and locking the shaft, as herein set
forth.
Fourth. In a column printing telegraph instrument, the combination with the
paper or printing roll, feed mechanism and impression mechanism, of a type-wheel
carriage adapted to be moved by the feed-mechanism in a direction parallel to the
axis of the printing roller and a type-wheel carried thereby on a vertical spindle
capable of rotary movement in a horizontal plane, and of oscillation in a plane at
right angles to the printing roller as set forth..
Fifth. In a column printing telegraph instrument, the combination of a paper-
carrying roll or printing surface, a type-wheel carriage movable in a direction
parallel to the same, a spindle on said carriage capable of rotary and vertical.
movement and of oscillation in a plane at right angles to the printing surface, a
type-wheel having a plurality of rows or lines of characters mounted on the spindle
and mechanism for imparting and controlling the said movements of the spindle and
type-wheel, as and for the purpose set forth.
Sixth. In a column printing telegraph instrument, the combination with a paper-
carrying roll or printing surface, of a type-wheel having a plurality of rows or
lines of characters, and capable of rotary movement about its axis, of movement
bodily in a direction parallel with the printing surface, of vertical movement in the
direction of its axis, and of an oscillating movement in a plane at right angles to
the printing surface, and mechanism for imparting and controlling such movements,
as and for the purpose set forth.
Seventh. In a printing telegraph instrument the combination with a type-wheel
having four rows or lines of characters on its periphery and capable of a movement
in the direction of its axis for presenting any one of said rows in alignment with
the printing point, an electro-magnetically controlled device capable only of moving
the said wheel from a given position through the space of one row and an
independent mechanism capable only of moving the wheel through the space of two
rows, as and for the purpose described.

page_text: Eighth. In a column printing telegraph, the combination of a transversely
movable type-wheel carriage, two rack-bars, one fixed the other capable of limited
longitudinal movement, and supported parallel to the path of the carriage pawls on
said carriage engaging with the rack-bars respectively, a continuously operating
motor, a shaft in frictional connection therewith and engaging with the movable
rack-bar by an eccentric, whereby, on the rotation of the shaft, the said rack-bar
will be reciprocated and an intermittent movement imparted to the carriage, as set
forth.
Ninth. The combination with the fixed and movable rack-bars, the type-wheel
carriage, the pawls pivoted to the same and engaging with the rack-bars, of a lever
pivoted to the carriage and carrying an oscillating bar or plate normally over the
pawls, whereby but one can be disengaged at a time and adapted when turned to
withdraw said plate and raise both pawls, as set forth.
Tenth. The combination with the lever for releasing the type-wheel and
permitting its return and the lever for feeding the paper and adapted in its
movement to encounter the said releasing lever, of a bar engaging at one end with
the paper feed-lever, a power-driven shaft and eccentric acting on said bar at or near
its centre to raise and lower the same, an electro-magnet and escapement adapted
to interpose a detent in the path of the free end of the bar, whereby the bar is
caused by the eccentric to raise the paper feed, as set forth.
Eleventh. The combination of the escapement mechanism the electro-magnet for
operating or controlling the same, the printing mechanism, the feed mechanism, a
rotary shaft for imparting movement to and operating the said printing and feed
mechanisms, a constantly rotating motor in frictional connection with the said shaft,
and an electro-magnet in the main line for releasing and locking the shaft, as herein
set forth.
Twelfth. The combination in a type-wheel carriage, of a rotating sleeve in gear
with the type-wheel setting mechanism, a type-wheel spindle, a ball and socket
connection between the sleeve and spindle, and a pin extending through the ball
and entering a longitudinal groove in the spindle and a recess in the socket whereby
the spindle is rotated with the sleeve, but is capable of limited vertical and lateral
movement with respect to the same.
Thirteenth. The combination in a printing telegraph with a type-wheel having a
plurality of lines of characters, of the lifting bar D the power-driven eccentric
shaft L, the lever R oscillated thereby, and an electro-magnet in the main
circuit for throwing said lever into engagement with the bar D" and raising the
same, through the space of one row of characters, as and for the purpose set
forth.
Fourteenth. The combination, with the type-wheel having a plurality of rows of
characters, of the lifting bar or frame D", the power-driven eccentric shaft L, the
lever pivoted to the frame D" the lever U oscillated by an eccentric on
shaft L and engaging with the lever U, an escapement shaft carrying a pin or stop
adapted to be set in a position to obstruct the upward movement of the free
end of lever T when raised by the lever U and thereby cause said lever to
raise the frame D" and the type-wheel through the space of two rows of
characters.
Fifteenth. The combination with the vertically movable type-wheel having
a plurality of rows of characters, of two systems of levers for setting the type-wheel
in an elevated position, and for releasing the same respectively and a power driven
shaft for oscillating the same an escapement shaft carrying a pin or stud, an electro-
magnet for bringing the pin into engagement with either of said systems of levers,
for the purpose set forth.
Sixteenth. The combination with the type-wheel having a plurality of rows of
characters, and a litting bar or frame D" of a lever T" connected to the frame D"
and adapted in its operation to raise the saine through the space of two rows of
characters, a lever R" oscillated by a power-driven shaft, and an electro-
magnet and armature adapted to throw the lever R" into engagement with
B

page_text: the frame D and raise the same through the space of one row of characters, as
set forth.
Seventeenth. In a printing telegraph instrument, the combination with a type-
wheel having a plurality of rows of characters and capable of assuming different
positions corresponding thereto, of independent mechanisms for raising said type-
wheel through the space of one and two rows respectively, a power-driven shaft for
operating the said mechanisms, and two electro-magnets of different electrical
character connected with the main line, adapted to establish and control connection
between the shaft and the said mechanism for raising the type-wheel respectively,
as hercin set forth.
The combination with a rotary type-wheel and spindle capable of oscillation in a
plane at right angles to the printing surface, of a stationary printing bed or
paper supporting surface, a printing lever adapted to engage with or encounter
the type-wheel shaft and swing said type-wheel into contact with the paper, as set
forth.
Nineteenth. The combination with a rotary type-wheel and spindle capable of
oscillation in a plane at right angles to the printing surface, of a wheel carried by
the spindle and provided with holes in its periphery corresponding to the characters
on the type-wheel a printing lever adapted in its movement to enter one of said
holes, thereby locking the spindle against rotary movement and to turn the spindle
about its centre of oscillation and bring the type-wheel into contact with the paper,
as set forth.
el
T
1
1341
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.