An Improved System of Call, suitable for Use with Autographic Telegraph Apparatus.
Year: 1896

page_text: Date of Application, 10th Mar., 1896
Complete Specification Left, 19th Mar., 1896-Accepted, 9th May, 1896
[Communicated from abroad by HARRY ETHERIDGE, of McKeesport, Allegheny
County, Pennsylvania, United States of America, Engineer.]
An Improved System of Call, suitable for Use with Autographic
Telegraph Apparatus.
I HUBERT FEILDEN JACKSON, Secretary and General Manager of The
Telautograph Company Limited, of 97 Gresham Street in the City of London,
do hereby declare the nature of this invention to be as follows:-
This invention relates to an autographic telegraph system, or what may be
termed an individual call system for autographic telegraphs, and the object of the
invention is to enable the operator of any one of a series of autographic telegraph
instruments to bring into operation any desired one of the others on the same
circuit, without establishing communication with the remaining ones.
The apparatus embodying this invention comprises a clockwork mechanism.
As, however, it is intended to make no claim to such clockwork mechanism, and as
the construction of the same is well understood, a detailed description thereof is
unnecessary. The main shaft of the clockwork mechanism, which is made of iron,
is extended so that it forms the revoluble and magnetizable core of a suitably
supported solenoid.
Near the front end, on the core shaft, a sleeve is secured by a set screw, which
fits loosely in a circumferential V-shaped groove in said core shaft, so as to allow
the latter to turn freely within the sleeve, and yet prevent the latter from moving
longitudinally thereon. In a forwardly curved part of this sleeve, an armature
When the solenoid is
pointer is pivoted, so as to swing toward and from the core.
not energised, the shaft can revolve without carrying the pointer around with it,
the latter remaining in a vertical position. The said armature pointer, which is
preferably a double armature, i.e., made in two parts, separated magnetically by
brass connecting pieces, is operated by a suitably placed switch magnet. The
movement of this armature pointer toward the switch magnet may be limited or
adjusted by a set screw. The main shaft also extends rearwardly, and acts, when
magnetized, as a magnet on an armature detent, which, when the instrument is at
rest, holds, but, when attracted, releases the fly of the clockwork mechanism, the
latter being arranged to be connected to a paper feed mechanism of suitable
construction, not necessary to be described in this application, as the same forms
no part of the present invention. The said fly can also be arrested in its movement
by the armature detent, operated by another electro-magnet.
A switchboard is arranged in frout of the armature pointer, and is provided with
as many holes as there may be instruments on the line, and the switchboards of all
the instruments are alike.
Secured to, and arranged on rear of, this switchboard, is an annular circuit-
breaking disc, also provided with a series of smaller holes, equal in number, and
arranged opposite to those in the switchboard. This disc is attached at one point
only to the switchboard by a flexible connection, so as to be capable of a certain.
amount of movement toward and away from the switchboard. One of the line
wires is connected to an insulated contact screw on the switchboard, and with this
contact screw a contact block on the circuit breaking disc makes contact, except
when the latter is forced away therefrom, as hereinafter described.

page_text: The switch magnet before referred to occupies a different relative position in
each of the series of instruments that may be connected on the same circuit. The
switchboard will contain as many holes as there are instruments on the same circuit,
and the magnets will he arranged in as many different positions.
On each instrument is arranged, in proper relation to its switch magnet, a switch
consisting of contact springs and contact screws, which springs are normally in
contact with the screws. An ebonite block is riveted to one of the contact springs,
and arranged to overlap the other, so that when the armature pointer is attracted
by the switch magnet, its adjustable screw projection impinges on the ebonite
block, causing the springs to break contact with their screws. A plug for the
switchboard is made of conducting material, except that part which comes into
contact with the switch-board, which part is of ebonite, and is provided with a
shoulder, which, when the plug is inserted, forces the disc backward, and causes
contact to be broken. This conductor plug, when inserted, is also interposed in
the path of the armature pointer, the latter being provided with a platinum
contact at the point of contact with the plug, to secure a gool electrical connection.
The object of bringing pointer and plug together is to restore the circuit broken
by the plug.
Connected with the mechanism so far described, are the receiver and transmitter
of an autographic telegraph, and also circuit-closing means not now described.
A transmitting stylus is provided with three insulated contact points, the first
named directly connected to ground, and the last two to the transmitter resistances,
and also, through the automatic circuit closing mechanism, to batteries and ground.
Three stationary contacts are arranged so that the contact points on stylus can
make connection therewith; the first is connected through a resistance and a
circuit-closing magnet to battery and ground. The next is connected to a receiver
magnet on the one side, and through the transmitter resistance, circuit-closing
armature lever, core of magnet, to another battery; thence to ground on the other
side. The third contact is connected to one of the receiver magnets on the one
side, and through transmitter resistance, magnet, and battery, to ground on the
other side.
There may be any number of instruments in the line, of which only the first and
last need to be provided with automatic circuit-closing means. The batteries
operate the lines connecting the instruments, and at the first station in one line is
arranged an electro-magnet, the core and armature of which are included in the
other line, while at the last station the above magnet is included in the same line,
and the armature and core thereof in the first line. The resistances in line from
contacts in the several instruments are graduated, gradually decreasing in value as
the number of instruments between the same and the battery increases. This
graduation is not essential, but it serves to equalize the current in the machines,
no matter which instrument "calls up," and thus prevents any violent action of
armature of receiving magnet, by reason of the latter being unduly charged.
(momentarily only, however).
Each subscriber or instrument is known by number or letter, the same appearing
on all the switchboards.
Supposing that there be three instruments in the series, which may respectively
be called A, B, and C, if the operator at A desires to communicate with station B,
he inserts his plug in the B hole of his switch-board, so that the end thereof shall
be interposed in the path of the armature pointer, and the disc forced back to
break the contact. He then takes hold of his stylus, and brings one contact
thereof against contact block, the effect to which is to close the circuit, thereby
energising the proper magnet, and causing the armature thereof to be attracted,
thus closing, throughout the whole series of instruments, the only break in the line
in which the said armature is included.
The energising of solenoid in all the instruments has caused the armature
detents to be attracted, releasing the several flies, and allowing the clockwork and
paper-feeding mechanisms to move, and thus to turn the main shafts. The

page_text: energizing of the solenoids having magnetised the revoluble cores or shafts, the
armature pointers are attracted by, and held firmly to, the cores, and are carried
around thereby synchronously in all the instruments. This movement of the
armature pointers continues until the pointer of station A comes into contact with
plug, when the circuit of the line previously broken by the insertion of the plug is
re-established through the medium of the disc, plug, pointer, and line.
The completion of this circuit, as just described, has energised the switch
magnets of all the instruments, but the armature pointer at station B is the only
one attracted, because the only one at the time in line with the said magnet, so
that it could be attracted. The attracted of said armature pointer at station B
has not arrested the movement of the paper-feeding mechanism, but at the other
stations the said paper mechanism is brought to rest by means of armature detents
operating upon the flies.
The operator at station A now inserts another plug in his switch-board, to cut in
his transmitter and receiver, and to again start the paper feeding mechanism of his
instrument. Everything is now in readiness for the operator at A to remove his
transmitting stylus from the contact, and commence to write the message he wishes
to convey to the operator at B,-A's communication reaching B only as the other
paper-feeding mechanism is arrested, and the receiver practically cut out of the
circuit; no message is therefore recorded, except on B's instrument. When the
operator has finished his message, he can bring the several instruments again to
the normal condition, by momentarily opening a hand switch, which causes all the
armature pointers to fall back to their original or zero positions.
In lieu of a solenoid encompassing the main revoluble shaft, an ordinary
U-shaped electro-magnet may be used, and the same may be fastened by its yoke
to the said revoluble shaft, so that the said magnet revolves with said shaft. In
this case, the armature pointer has an upper armature of disc shape, so that it may
cover the field of revolution of the magnet. It is mounted by an arm on the shaft
in the same manner as before. In order to connect the magnet with the circuit on
said shaft, are mounted two collars insulated therefrom, and connecting thereto the
ends of the magnet coils, passing the same through the hollow centre of the shaft,
in manner well understood in the art. Two brushes connected with the line wires
are arranged to bear on, or make contact with, said collars, thus completing the
connection of the magnet with the line. As, in this construction, the shaft is not
magnetised, there is provided an additional electro-magnet connected to the circuit
of the switch magnet.
Dated this 10th day of March 1896.
NEWTON & SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved System of Call, suitable for Use with Autographic
Telegraph Apparatus.
I HUBERT FEILDEN JACKSON, Secretary and General Manager of The
Telautograph Company, Limited, of 97 Gresham Street in the City of London,
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 an autographic telegraph system, or what may be
termed an individual call system for autographic telegraphs, and the object of the
invention is to enable the operator of any one of a series of autographic telegraph
instruments to bring into operation auy desired one of the others on the same
circuit, without establishing communication with the remaining ones.

page_text: ished by the means neremarter described and claimed.
In the accompanying drawings forming part of this Specification,
Fig. 1 represents a front view of the mechanism embodying the invention, with
part of the front plate of the switch-board broken away, to more clearly show
the construction in rear thereof.
Fig. 2 is a sectional view of Fig. 1, taken on line, showing also the con-
nection of same with the receiving and transmitting instruments and circuit
closer.
Fig. 3 represents a rear view showing the armature lever detents controlling fly
of paper-feeding mechanism.
Fig. 4 is a plan view of the lower armature lever and its attached detent, shown
in Fig. 3.
Fig. 5 is a perspective view of the switch contacts shown in Figs. 1 and 2.
Fig. 6 shows the connection of the disc behind front plate of switch board to
said plate.
Fig. 7 is a diagrammatic view of three autographic telegraphic instruments
connected in series, the instruments being shown at rest.
Fig. 8 is a similar view, showing the action of the mechanism when station A is
engaged in establishing communication with station B, the instrument at last
station C being at rest.
Figs. 9, 10, and 11 represent respectively, in a diagrammatic manner, the switch-
boards of the three stations shown in Fig. 8, with the armature pointers in operative
position.
Figs. 12, 13, and 14, are respectively a side, front, and rear elevation of a
modification.
Referring to the drawings 1 represents the supporting plates or cheeks of a
clockwork mechanism arranged to be operated by a weight attachable to cord 2.
As no claim is inade herein to a clock work mechanism, and as the construction of
the same is well understood, a detailed description thereof is unnecessary. The
main shaft 3 of the clockwork mechanism, which is made of iron, is extended
through the frent plate, so that it forms the revuluble and magnetizable core of a
solenoid 4, which latter is attached to the said plate. The pinion 5 on said shaft
gears with the train of wheels of the clockwork mecbanism shown in dotted lines
in Fig. 1, the shaft of fly 6 heing connected to the latter.
Near the front end of core shaft 3, a sleeve 7 is secured by a set screw 8, which
fits loosely in a circumferential V-shaped groove in said core shaft, so as to allow
the latter to turn freely within the sleeve, and yet prevent the latter from moving
longitudinally thereon. In the forwardly curved part 9 of this sleeve, the armature
pointer 10 is pivoted so as to swing toward and from the core 3.
When solenoid 4
is not energized, the shaft can revolve withent carrying the pointer around with it,
the latter remaining in a vertical position. Also arranged on the front cheek 1 is
a switch magnet 11, placed so as to operate on the said armature pointer, which
latter is preferably a double armature, ie., made in two parts, separated mag-
netically by brass connecting pieces, as shown. The movement of this armature
pointer toward switch magnet 11 may be limited or adjusted by set screw 12.
The main shaft 3 also extends rearwardly through the back cheek 1, and acts,
when magnetized, as a magnet on armature detent 13, which, when the instrument
is at rest, bolds, but, when attracted, releases the fly of the clockwork mechanism,
the latter being arranged to be connected to a paper feed mechanism of suitable
construction, not necessary to be described in this application, as the same forms
no part of the present invention. The said fly can also be arrested in its movement
by the armature detent 14, when the same is attracted by its magnet 15.
These two armature detents, with stops, are clearly shown in Figs. 2, 3, and 4.
A switchboard 16 is arranged in front of the armature pointer, and is secured to
the front plate 1 by posts 17. This switchboard is provided with as many holes 18
as there may be instruments on the line, and the switch-boards of all the instruments
are alike.

page_text: Secured to, and arranged on rear of this switchboard, is an annular circuit-
breaking disc 19, also provided with a series of smaller holes 20, equal in number,
and arranged opposite to those in the switchboard. This disc 19 is attached at one
point only to the switchboard by a flexible connection 21 (see Fig. 6), so as to be
capable of a certain amount of movement toward and away from the switchboard.
One of the line wires 36 is connected to the insulated contact screw 23 on switch-
board, and with this contact screw the contact block 24 on circuit-breaking disc
makes contact, except when the latter is forced away therefrom, as hereinafter
described.
The switch magnet 11 before referred to occupies a different relative position in
each of the series of instruments that may be connected on the same circuit-sec
Figs. 9, 10, and 11,-the same showing diagrammatically three switch-boards of
three instruments arranged at stations à greater or less distance from each other.
The switch magnets 11 are shown in these figures in different positions. The
switchboard will contain as many holes as there are instruments on the same
circuit, and the magnets 11 will be arranged in as many different positions.
On each instrument is arranged, in proper relation to its switch magnet 11, a
switch 25 (see Figs. 1 and 5), consisting of contact springs 26 and 27 and contact.
screws 28 and 29, which springs are normally in contact with the screws. An
ebonite black 30 is riveted to one of the contact springs, and arranged to overlap
the other, so that when the armature pointer 10 is attracted by magnet 11, its
adjustable screw projection 31 impinges on block 30, causing the springs 26 and 27
to break contact with screws 28 and 29. The plug 32 for the switchboard is made
of conducting material, except that part which comes into contact with switch-
board 16, which part is of ebonite, and is provided with a shoulder 33, which, when
the plug is inserted, forces the disc 19 backward, and causes contact to be broken
at 23 and 24. This conductor plug, when inserted, is also interposed in the path.
of the armature pointer, as shown in Fig. 2, the latter being provided with a
platinum contact 34, at the point of contact with the plug, to secure a good.
electrical connection. The object of bringing pointer and plug together, is to
restore the circuit broken by the plug at 23, 24, by causing the current to pass
from 24, through disc 19, plug 32, armature pointer 10, conductor 35, to main.
line 36 and 53.
Connected with the mechanism so far described, are the receiver and transmitter
of an autographie telegraph, and also circuit-closing means not now described.
The transmitting stylus 39 is provided with three insulated contact points 40, 41,..
and 42, the first named directly connected to ground, and the last two to the
transmitter resistances, and also, through the automatic circuit-closing mechanism,
to batteries and ground. Three stationary contacts, 43, 44, and 45, are arranged
so that the contact points on stylus can make connection therewith ;-the first
named 43 is connected through resistance 46, circuit closing magnet 47, line 53,
battery 48, to ground. Contact 44 is connected to receiver magnet 37, on the one
side, and, through the transmitter resistance 38, circuit closing armature lever 49,
core of magnet 47, line 54, battery 50, to ground on the other side. Contact 45 is
connected to receiver magnet 51 on the one side, and through transmitter
resistance 52, magnet 47, battery 48, to ground on the other side.
In Fig. 7, only three instruments, connected in series, are shown, it being under-
stood, of course, that a large number may be so connected. Only the first and last
instruments need to be provided with automatic circuit-closing means. The two
batteries 48 and 50 operate the two lines 53 and 54, connecting the three instru-
ments, and, at the first station in line 53, is arranged an electro-magnet 47, the core
and armature of which are included in line 54, while at the last station the
magnet 47 is included in line 54, and the armature and core thereof in line 53.
The resistances 46 in line from contacts 43 in the several instruments are graduated,
gradually decreasing in value as the number of instruments between the same and
the battery increases. This graduation is not essential, but it serves to equalize
the current in the machines, no matter which instrument "calls up," and thus

page_text: prevents any violent action of armature of receiving magnet, by reason of the
latter being unduly charged (momentarily only, however).
In Fig. 7, the instruments are represented at rest, the several styluses in normal
position, and the plugs in switchboards withdrawn from paths of armature pointers.
In Fig. 8, the instrument is represented, at A, in the act of establishing commu-
nication with instrument at B, the instrument at C being cut out.
Each subscriber or instrunient is known by number or letter, the sn ne appearing
en all the switch-boards (see Figs. 9, 10, and 11).
The operation of the mechanism is as follows:-
If the operator at A desires to communicate with station B, be inserts his plug 32
in the hole B of his switchboard, so that the end thereof shall be interposed in the
path of the armature pointer, and the disc 19 forced back to break the contact
at 23, 24. He then takes hold of his stylus 39, and brings contact 40 thereof
against contact bleek 43, the effect of which is to close the circuit from ground, at
battery 48, through said battery, line 53, magnet 47, branch line 55, resistance 46,
contucts 40, 43, conductor 56, to ground. The energizing of magnet 47 causes
armature 49 to be attracted, thus closing, throughout the whole series of instruments,
the only break in the line in which armature 49 is included.
The circuit is as follows:-
From ground, at 22, line 54, battery 50, core of magnet 47, armature 49, line 54,
switch 25, and solenoid 4, of station A, to line 54, to station B, where, as the
switch 25 has not yet been opened, the circuit is through said switch, solenoid 4,
and line 54, to station C, through its switch and solenoid 4, to coil of magnet 47,
and by line 54 to ground. The energizing of solenoid 4 in all the instruments has
caused the armature detents 13 to be attracted, releasing the several flies, and
allowing the clockwork and paper feeding mechanisms to move, and thus to turn the
shafts 3. The energizing of the solenoids 4 having magnetized the revoluble cores
or shafts 3, the armature pointers 10 are attracted by, and held firmly to the cores,
and are carried around thereby synchronously in all the instruments. This move-
ment of the armature pointers continues until the pointer of station A comes into
contact with plug 32, when the circuit of line 53 previously broken at 23, 24, by
the insertion of the plug is re-established through the medium of dise 19, plug 32,
pointer 10, and line 35. The circuit of line 53 through the instruments is then as
follows:-
From ground at 22 to battery 48, magnet 47, line 53, to point 57, where the
circuit divides, one division including switch 25, magnet 15, line 62, disc 19,
plug 32, pointer 10, and line 35; the other embracing line 58, transmitter
section 52, line 59, receiver magnet 51, line 60, magnet 11, lines 61 and 62, disc 19,
plug 32, pointer 10, and to line 53, by 35, as before. From thence, through
station B, the circuit includes conductors 53, 58, 63, contact 45, receiver 51,
conductor 60, magnet 11, conductors 61, 62, contacts 23, 24, conductor 36, to
line 53. The other circuit at station B, through switch 25, is broken by reason of
magnet 11, having attracted armature pointer 10, the circuit through 11 being
closed the moment armature pointer 10 arrived opposite said magnet. The
power of magnet 11 being greater than that of solenoid 4. From station B,
through C, the circuit includes line 53, dividing at 57, one portion including
switch 25, magnet 15, conductor 62, contacts 23, 24, conductor 36, line 53,
armature 49, and core of magnet 47, to ground; the other part including
conductors 58, 63, contact 45, receiver magnet 51, conductor 60, magnet 11,
conductors 61, 62, to line and ground, as before. The completion of the circuit of
line 53, as just described, has energized the magnets 11 of the three instruments,
but the armature pointer 10, at station B, is the only one attracted, because the
only one at the time in line with the said maguet, so that it could be attracted, is
illustrated in Figs. 9, 10, and 11. The attraction of said armature pointer, at
station B, has of course opened the switch 25, so that the receiver is cut in, and
magnet 15 cut out of the circuit, the movement of the paper-feeding mechanism
being therefore not arrested; but at stations A and C the said mechanism is

page_text: brought to rest, as the magnets 15, not being cut out, attract their armature
detents 14, and thus arrest the revolution of the flies, stopping the feeding of the
paper.
Fig. 8 illustrates the circuits and operation of the mechanism at this point in the
process of establishing communication between any two stations. The operator at
station A now inserts (see Figs. 8 and 9) another plug 64 in his switchboard
(shown only partially inserted in Fig. 8), to open switch 25, and thus cut in his
transmitter and receiver, and cut out magnet 1, to again start the paper-feeding
mechanism of his instrument. Everything is now in realiness for the operator
at A to remove his transmitting stylus from contact with 43, and commence to
write the message he wishes to convey to the operator at B, A's communication
reaching B only as C's paper feeding mechanism is arrested, and his receiver
practically cut out of the circuit; no message is therefore recorded on C's instru-
ment. When the operator has finished his message, he can bring the several
instruments again to their normal condition by momentarily opening the hand-
switch 65, which, breaking the circuit of line 53, also necessarily breaks that of
line 54, all the armature pointers 10 falling back to the original or zero positions.
The resistance of the several magnets may be arranged relatively to each other
about as follows:-Resistance of magnet 47 about two and one half ohms,
solenoid 4 ten ohms, magnet 15 twenty-four ohms, magnet 11 fifteen ohms. The
invention is not confined to the values of the resistances mentioned, as the same
may vary to a great extent, nor to precisely the relative values mentioned, as the
same may also be varied within cousiderable limits, without affecting the
operativeness of the mechanism.
The circuits, when operator at A is in communication with operator at B, are as
follows:-
From ground at 22, battery 48, magnet 47, line 53, conductor 58, through
transmitter resistance 52, conductor 59, receiver magnet 51, conductor 60,
magnet 11, conductors 61 and 62, contact 24, disc 19, plug 32, pointer 10,
conductor 35, to line 53 to 57, station B, thence by conductors 58, 63, stylus,
contact 45, receiver magnet 51, conductor 60, magnet. 11, conductors 61, 62,
contacts 24, 23, conductor 36, to line 53 to 57. Station C, thence by
conductors 58, 63, stylus, contact 45, receiver magnet 51, conductor 60, magnet 11,
conductors 61, 62, contacts 24, 23, conductor 36, line 53, armature 49, core of
magnet 47, line 53, to ground. The other circuit is from ground at 22, battery 50,
core of magnet 47, arinature 49, line 54, conductor 66, transmitter resistance 38,
conductor 66, receiver magnet 37, line 54, solenoid 4, to 67, station B, thence by
conductor 66 to stylus, contact 44, conductor 66, receiver magnet 37, line 54,
solenoid 4, to 67, station C, thence by line 54 to switch 25 and solenoid 4, and by
line 54 to magnet 47, aud to ground.
From an inspection of these circuits it will be seen that at station A both
receiver and transmitter are in the circuit, at station B the receiver only, and at
station C they are both cut out.
In Fig. 1, as herein before explained, is shown in dotted lines the train of wheels
of a clock-work mechanisms connected to and operating the paper feed mechanism,
of which latter 68 is the paper feed roll, but, as no claim is made herein to such
feed mechanism, further illustration of the same is deemed unnecessary.
In lieu of a solenuid encompassing shaft 3, as shown in Fig. 2, an ordinary
U shaped electro-magnet 4' may be used, and the same may be fastened by its
yoke to the revoluble shaft 3, as shown in Fig. 12, so that said magnet revolves
with said shaft. In this case, the armature pointer 10 has its upper armature 101
of disc shape, so that it may cover the field of revolution of the magnet 4'. It is
mounted by arm 9 on shaft 3 in the same manner as shown in Fig. 2. In order to
connect the magnet 4' with the circuit, on said shaft are mounted two collars 70, 71,
insulated therefrom, as shown, and connected thereto, the ends of the magnet coils
passing the same through the hollow centre of the shaft in manner well understood
in the ait. Two brushes, 72 and 73, connected with the line wires, are arranged to

page_text: bear on, or make contact with, said collars, thus completing the connection of
magnet 4 with the line. As, in this construction, the shaft 3 is not magnetized, it
cannot, of course, act on armature 13, and there is therefore provided an additional
electro-magnet 74, connected to the circuit of magnet 4', as clearly shown in
Figs. 12 and 14, the same being arranged to act on said armature.
The operation of this mechanism is the same as that illustrated in Fig. 2,
i.e., when magnet 41 is energised and its shaft 3 revolves, the armature pointer is
attracted and carried around with the shaft and magnet, the armature 13 being
attracted to release the fly of the clockwork mechanism. This modification,
therefore, is to be considered the full equivalent of that first described.
Wherever, in the claims, reference is made to the revoluble shaft and the magnet
co-operating therewith, it is to be understood as language covering the construction
shown in Fig. 12, as well as that shown in Fig. 2.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me
from abroad, I declare that what I claim is :-
1. In combination with a clock-work mechanism connected to the feed roll of
a paper feed mechanism, a revoluble and magnetizable shaft and a magnet directly
co-operating therewith, substantially as described.
2. The combination with a revoluble shaft, of a magnet directly co-operating
therewith, and an armature pointer arranged to be attracted, held, and revolved by
the action of said shaft and magnet, substantially as described.
3. The combination with a revoluble shaft, a magnet co-operating therewith,
and a clockwork mechanism connected to the paper feed roll, of an armature
pointer arranged to be attracted and revolved by the action of said shaft and
magnet, substantially as described.
4. The combination with a revoluble shaft, of a magnet co-operating therewith,
and an armature pointer pivoted to a sleeve loosely mounted on said shaft, and
arranged, when attracted, to revolve with the same, substantially as described.
5. The combination with a solenoid and a revoluble and magnetizable shaft
forming the core thereof, of an armature pointer arranged to he attracted by and
revolved by said shaft, substantially as described.
6. The combination with a clockwork mechanism connected to the paper feed
roll, of a solenoid, a revoluble magnetizable shaft, and an armature detent
arranged, when attracted, to release the fly of the clockwork mechanism,
substantially as described.
7. The combination with a revoluble shaft and a magnet co-operating therewith,
of a switch electro-magnet and an armature pointer arranged to be attracted by
said two magnets, substantially as described.
8. The combination with a revoluble shaft and a magnet co-operating therewith,
of a switch, a switch electro-magnet, and an armature pointer, arranged to be
attracted by said magnets, and to open the switch, substantially as described.
9. The combination with a revoluble shaft and a magnet co-operating therewith,
of a switch, a switch electro-magnet, an arinature pointer arranged to be attracted
by said magnets, and to open the switch, an electro-magnet with armature detent
to arrest fly of clockwork mechanism, and necessary electrical connections,
substantially as described.
10. The combination with a revoluble shaft and a magnet directly co-operating
therewith, of an armature pointer moved by the joint action of said shaft and
maguet, a switchboard, and a plug arranged to be interposed in the path of the
pointer, substantially as described.
11. The combination with a revoluble shaft and a magnet co-operating therewith,
of an armature pointer, a switchboard, circuit breaking disc, and a plug arranged
to co-operate with said disc, and to be interposed in the path of the pointer,
substantially as described.
12. The combination with a revoluble shaft and a magnet co-operating therewith,

page_text: of an armature pointer, a switch electro-magnet and switch, a switchboard,
a circuit breaking disc, and a plug co-operating with said disc and pointer,
substantially as described.
13. The combination with a revoluble shaft and a magnet co-operating therewith,
of the fly of the clockwork mechanism, an armature detent for releasing the fly,
and an electro-magnet and armature detent for arresting the fly, substantially as
described.
14. The combination with a revoluble shaft and a magnet co-operating therewith,
of a switch electro magnet, and an armature pointer made in two parts connected
by non-magnetic material, and arranged to be operated by said magnets, sub-
stantially as described.
15. The combination with the switch electro-magnet and switch, of the revoluble
armature pointer, made in two parts, connected by non-magnetic material,
switchboard, and plug, substantially as described.
16. The combination with the switchboard and the circuit breaking disc, each
provided with a series of corresponding holes, the disc being flexibly connected to
the switchboard at one point only of the plug, arranged to separate disc from
switchboard contact, substantially as described.
17. The combination with the switchboard and the circuit breaking disc, of the
armature pointer, and the plug arranged to separate disc from switchboard contact,
and to be interposed in path of pointer, substantially as described.
18. In a system of autographic telegraphy, the combination with a series of
instruments, each provided with a similar switchboard, a switch magnet and switch
differently located relatively to the switchboard in each of the series of instruments,
an armature pointer, a magnet, a revoluble shaft, and necessary electrical
connections, substantially as described.
19. In a system of autographic telegraphy, the combination with a series of
instruments electrically connected, of an automatic circuit-closing mechanism
a grounded stylus at each instrument, arranged to operate said circuit-closing
mechanism, and a series of synchronously moving switch-opening mechanisms,
substantially as described.
20. In a system of autographic telegraphy, the combination with a series of
instruments electrically connected, of an automatic circuit closing mechanism,
a grounded stylus at each instrument, arranged to operate said circuit closing
mechanism, a series of switch-opening mechanisms, consisting of a revoluble shaft,
a magnet co-operating therewith, an armature pointer, a switch and switch electro-
magnet, a switchboard, a circuit breaking disc, conductor plug, and necessary
electrical connections, substantially as described.
21. The combination with the receiver and transmitter, the latter provided with
a stylus having three insulated contacts, one of which is connected to ground, the
remaining two to transmitter resistances and to the automatic circuit-closing
mechanism, of three contacts, one connected to said automatic circuit-closing
mechanism, the remaining two to the same, and also to the receiver magnets and
transmitter resistances, the automatic circuit closing mechanism, the switch
opening mechanism, and necessary electrical connections, substantially as described.
Dated this 18th day of March 1896.
NEWTON & SON,
Agents for the Applicant.