US572760A - Printing telegraph - Google Patents

Description

(No Model.) 9' 8heets-Sheet- 1.

PRINTING TELEGRAPH.

N0. 572,760.v Patented Dec. 8,.1896Q (No Model.)

.9 Sheets-8het 2.

L. KAMM. PRINTING TELEGRAPH.

Patented Dec. 8, 189-6.

THE NORRIS PETERS ca, wuTo-uwo" WASHINGTON, a. c.

(No Model.) 9 Sheets-8heet 3.

.L. KAMM PRINTING TELEGRAPH.

No. 572,760. Patented Dec. 8, 1-896.-

1 Li 5 L 5 I Inventor.

(No Model.) 9 sheets-sheet 4.

- L. KAMM.

PRINTING TELEGRAPH.

No. 572,760. Patented Dec. 8, 1896.

(No Model.) Sheets -Sheet 5.

- L. KAMM.

' PRINTING TELEGRAPH. No. 572,760 Patented Dec. 8, 1896.

(No Model.) 9 Sh eets -She et 6. L. KAMM PRINTING TELEGRAPH.-

N0. 572,760. Patented Dec. 8, 1896.

Witnesses,-

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(No Model.) 9 Sheath-Sheet 7.

L KAMM PRINTING TELEGRAPH.

Patented Dec. 8, 1896.

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- L. K-AMM.

PRINTING TELEGRAPH. No. 572,760. Patented Dec. 8,1896,

' V Fig. 22.

I710 'l l lll lh UNITED STATES PATENT OEE1oE."

, LEO KAMM, OF LONDON, ENGLAND.

PRINTING-TELEGRAPH.

SPECIFICATION forming part of Letters Patent No. 572,760, dated December 8, 1896.

Application filed December 80, 1895- Serial No. 573,761. (No model.)

To ctZZ whom it may concern:

Be it known that I, LEO KAMM, a subject of the Queen of Great Britain, residing at London, England, have invented new and useful Improvements in Printing Telegraphs, of which the following is a specification.

This invention relates to printing telegraphic apparatus, and has for its object to produce anapparatus which acts both as a transmitter and receiver, which is more certain and rapid in its action than instruments at present in use, and which does not require any special skill in its operation.

According to my invention I make use of two electric impulses or currents produced by the transmitting apparatus to produceeach letter or character on the receiving apparatus.

In carrying out my invention I employ in each apparatus a series of finger-keys, as in a type-writer, with which keys are connected spring-pins arranged in the arc of a circle. The center of this circle is the axis of an arm which '1 term the synchronizing arm and which is adapted to be swung by an adjustable spring'(or weight) above the spring'pins until arrested by any one pin moved into its path by a finger-key. The spindle on which the synchronizing arm is mounted carries a governor or loose weight actuated in one direction only by a pawl connected to the spindle, which weight, according to the pull of the adjustable spring, (or weight,) determines the speed of the arm. The spindle also carries a series of spring-type arranged in the arc of a circle of an electromagnet, which I term the syn-- chronizing magnet, one of which projections is adapted to be projected between the springpins hereinbefore described, while the other is engaged by a hook upon the armature of an electromagnet, so as to hold the arm in its initial or zero position. This magnet, Which- I term the starting-magnet, is energized by the first electric impulse or current hereinbefore mentioned, produced by the closing of a local electric circuit when a finger-key is depressed, the said armature in its movement also closing the line-circuit connected with the synchronizing magnet of a distant closes the line-circuit and produces the second electric impulse or current hereinbefore mentioned. This current again energizes the synchronizing magnet of the distant or receiving apparatus, the armature of which moves the other projection so as to stop the synchronizing arm against the spring-pin correspondin g with that operated by the finger-key in the transmitting apparatus,and thus closes a local circuit, as in the transmitting apparatus. These local circuits in both apparatuses then each simultaneously operates an electromagnet, which I term the printingmagnet, which operates the plunger hereinbefore described to cause the type to print, to feed the carriage along carrying the paper roll, and close another local circuit in which is an electromagnet (or solenoid) which I term the zero-magnet and which is energized to return the synchronizing arms to the zero position.

To feed the paper on its roller so as to start a fresh line or column, I provide an electro- Tmagnet which I term a column-magnet,

which is energized by allowing the synchronizing arm to travel fart-her than the row of spring-pins extend, when it is stopped by a fixed pin, (which is in the same local circuit as the springpins,) and also-causes two contacts to close the circuit containing the said magnet.

To enable my invention to be fully understood, I Will describe how it can be carried into practice by reference-to the accompanying drawings, in which Figure 1 is a plan View of a printing'telecolumn-magnet with connected parts.

graphic apparatus constructed according to my invention. Fig. 2 is a central longitudinal section of the same with certain parts removed. Fig. 3 is a sectional plan, the section being taken on the line 3 3, Fig. 2. Fig. 4 is a front sectional elevation with certain parts removed, the section being taken on the line at 4., Fig. 2. Fig. 5 is a sectional view showing the synchronizing arm, its governor, the type, and other connected parts drawn to an enlarged scale. Fig. 6 is a plan of the type and the synchronizing arm. Fig. 7 is an under side view of the outer end of the synchronizing arm. Fig. 8 is a section on the line 8 8, Fig. 5. Fig. 9 is a section on the line 9 9, Fig. 5, looking in the direction of the arrow. Figs. 10, 11, and 12 are respectively views of the printing-magnet,the zero-magnet, and the Fig. 13 is a rear view showing one end of the paper-carriage and its supporting-rails. Fig. 14: is a section on the line 14 14, Fig. 4.. Fig. 15 is a front view of the mechanism for operating the inking-ribbon. Fig. 16 is a section on the line 16 16, Fig. 2. Fig. 17 is a section showing mechanism for looking the armature of the printing-magnet. Fig. 18 is a section on the line 18 18 of Fig. 3 drawn to an enlarged scale. Figs. 19, 20, and 21 are respectively a plan, a section, and a side view showing the feed-screw for operating the papercarriage. Fig. 22 is a diagrammatic View showing the arrangement of the various circuits in connection with the apparatus. Fig. 23 is a diagrammatic view showing two connecterl apparatuses. Figs. 24. and 25 are respectively a plan and a sectional elevation showing the apparatus adapted to print on a paper tape.

Similar reference-letters indicate corresponding parts throughout the drawings.

a a a, Figs. 1 and 2, are the finger-keys jointed to levers a, pivoted at a in a box or case (t the lower part of which is provided with adjustable feet a b b b are the spring-pins, arranged in the arc of a circle, as shown in Fig. 3, the ends of which pins are guided in plates 1) t and which are connected to the levers a through the medium of links Z9 fulcrumed on the plate 2), and levers 79 The plate 72 is connected to the plate I) by pillars 19 b is a spring-frame pivoted at b beneath the levers a and having a bar 5 in contact with the under sides of the said levers, so that when any one of the levers ct is depressed it moves, through the medium of the said frame, a spring-lever b which forms one of the terminals of a circuit,includinga local battery Z1 Fig. 22, and the starting-magnet, hereinafter described, the said lever when movedmakin g contact with the other terminal, I9 The lever 17* is moved by a projection Z1 on a pivoted arm (J connected to the frame I) by a link I), the movement being effected on the upward movement of the arm 6 only by comin g into contact with a projection on a block thereof, the axis of which coincides with the center of the circle in which the pins 12 are arranged, as shown, so that its free end can swing in the direction of the arrow, Fig. 3, above the upper ends of the pins Z). By this arrangement if one of the pins 1) be raised by the depression of one of the keys a the synchronizing arm will come in contact therewith and be arrested in its movement. The spindle 0' turns upon centers c in the plate Z) and in a cross-bar 0 but insulated thereic'lrozm, the cross-bar being carried by pillars 0 Figs. 1 and 3, is the adjustable spring, one end of which is attached by a cord or the like to an insulated drum 0 on the spindle 0, while the other end is connected to a screw 0 carried by a sliding frame 0 working on guide-rods 0 attached to one of the two pillars d d. With the screw-threaded boss of the frame 0 a screw 0 engages, so that by rotating the said screw the frame 0 can be moved backward or forward to adjust the tension of the spring 0 and consequently the pull on the arm 0. The end of the screw 0 is provided with a pointer 0 working over a dial a the pointer being operated bya handle 0, as shown clearly in Fig. 12.

Each of the pins Z) 19 forms one terminal of a local circuit, including the plate I), the battery Z9 Fig. 22, and the second contact-magnet and printing magnet hereinafter described, the other terminal being the arm 0, connected to the battery through the spindle c and conductor c 0 Figs. 2 and 3, is the synchronizing magnet in circuit with the line-battery A, Fig. 22, and with a contact-piece D, forming a terminal, the other terminal being a switch-lever E, connected to the line-wire B. The springarmature 0 of the said magnet is pivoted at 0 to downward extensions on the arm 0, the said armature encircling the spindle 0, so as to be operated by the magnet in any position of the arm 0.

0 and 0 are the projections carried by the arm 0, the projections 0 being in the form of a lever pivoted at 0 so that it can be projected between the pins 1) and connected to an upward extension 0 of the armature c by a link 0", the projection o forming part of the said link.

In order to prevent damage when the arm a is moving above the pins Z? Z) and one of the said pins is accidentally raised by a key a and strikes it, I joint the said arm to its boss, as at 0 Fig. 5, and provide it with an extension 0 which normally is kept in contact with the under side of the boss by a spring the said spring allowing the arm to yield when struck, as described.

0 Figs. 1, 2, and 3, is the starting-magnet and e is the hook onthe spring-armature e of the same, but insulated therefrom for holding the arm 0 in its initial or zero position.

- This magnet is energized by the contact of the hook 0 the terminals b 12 each time a key a is depressed, whereby the arm 0 is released from This armature forms one of the terminals of the main-line circuit, including the battery A, Fig. 22, and when attracted by the magnet 0 comes into contact with the other terminal, 0 and completes the circuit, sending a current to line B through the distant or receiving apparatus and earth-plate G.

e, Fig. 5, is the looseweight or governor on the spindle c, and c" is the pawl, connected to the spindle c by the army; and engaging with ratchet-teeth e? on the periphery of the said weight. By arranging the weight loose,as described, its momentum allows it to turn when the synchronizing arm is arrested by one of the pins 1), thereby preventing any damage to the said pins by the impact, and it also allows the arm 0 to be moved back quickly by the zero-magnet, hereinafter described.

ff are the type, which are arranged in the arc of a circle, as shown clearly in Fig. 6, and

. attached to springs f, carried on a sector f attached to the spindle 0. Each of these type corresponds with one of the spring-pins, (except the first pin b which has no corresponding type,) that is to say, when one of the pins b is raised by depressing its corresponding finger-key the synchronizing arm when in contact with the said pin brings a type, the character of which corresponds with the character marked on the finger-key depressed, into position to be moved forward to imprint the paper. The first pin b serves to form the spaces between words when printing and is connected to the key a f? is the plunger, working through an insulated guide f and adapted when moved by a lever f upon a shaft f to press the type f against the ink-ribbon g, which in turn is pressed against the paper whichpasses around the roller h from the paper roll 71*. The paper is pressed against the roller h by springs h f Figs. 1, 2, 3, and 10, is the printing-magnet in circuit with the local battery 12 Fig. 22, and the armature f of which operates the shaft f through the medium of the rod f lever f shaft f lever f rodf ,and weighted lever f The ink-ribbon g is arranged to pass round rollers g g g g and between guides 3 g, Figs.- 1 and 2, and has its ends wound upon drums g g which are advantageously adapted to be automatically alternately rotated through the medium of spring-pawls g g",

actuated from the shaft f by levers g Fig. 15. The drums rotate uponspindles 9 carried by a frame g attached to the bar 0 This alternate rotation allows of the ink-ribicallyI provide rollers g", carried by arms 9 the said rollers being caused to work invertical lines by being jointed to the ends of the levers g fulcrumed on shafts g and forming a parallel motion. One of the said rollers is designed to run upon the ribbon being wound upon one of the drums. This ribbon as it increases in size in the form of a coil upon the drum causes the roller upon it to be moved upwardly, and when it has reached a certain point the roller is caused to move off the ribbon and the other roller into contact with the ribbon on the other drum. These movements, which are instantaneous, are effected by a spring 9 having a tooth g and bearing upon a roller 9 upon the upper end of an arm 9 as shown clearly in Fig. 16, which roller as the roller 9 is moved ,up is caused through the medium of the arm g of the latterroller and one of the levers g and shaft g to move beneath the tooth of the spring g andwhen it has reached a point just beyond the center of the tooth the spring 9 causes it to suddenly complete the rest of its movement in the same direction by pressing down upon the other side of the roller g as will be understood. In order also that the pawl g which has been actuating the drum on which the ribbon has just been wound, shall be instantaneously disengaged at the same time that the roller 9 is moved from off the ribbon and the other pawl thrown into engagement with its drum, I provide the arm g with a downward extension 9 which ongages with a fork g (havingconsiderable space between its prongs) above an arm loose upon the lower shaft gf, the upper part of the arm 9 having a tooth g similar to the:

tooth g and borne upon by a'roller at the end of a springg similar to the spring g The arm 9 is also provided with aboss carrying arms 9 each of which bears upon the upper side of the pawl g beneath it alternately. By this construction it will be seen that when the arm Q13 is instantaneously moved when-the roller g is disengaged from the coil of ribbon, as described, it will come into ,contact with one of the prongs of the fork 9 and move the arm 9 beneath the roller of the spring Q18, thereby moving the arms g to disengage one pawl from and engage the other.

pawl with its respective drum. With the described arrangement of springs g g, oper-.

ating in conjunction with the rollers and teeth, the movements of the parts are effected instantaneously and the parts are maintained in position when so moved.

The roller h and paper-roll in a carriage h, supported by wheels it? upon rails 7L3, connected to the pillars d d'by brackets 71,.

h are carried The carriage h is moved in the di-. rection of the arrow 1', Fig. 4, by a screw 7L and in the opposite direction by means of a weight h, (or spring,) the weight being protected by a tube 71 and connected to a cord 7L8, which passes over a pulley h and is attached to one end of the carriage. The carriage is connected to the screw it by a tooth i, which engages with the screw-thread, the latter being of a shape in section similar to a ratchet-tooth, as shown clearly in Figs. 19 and 21, so that when the screw is revolved in the direction of the arrow, Fig. 4, the carriage will be caused to move upon the rails 7L3. The shape of the screw-thread also allows the carriage to be moved by hand in the direction of the arrow lindependently of the screw its, the tooth t', which is attached to a pivoted arm t", riding over the convolutions of the screw. The screw ha is revolved by gear-wheels 2' 2' Fig. 1.4:, the latter of which is actuated by a pawl 1', carried at one end of a lever t the other end being connected to and actuated from a lever t on the shaft f through the medium of a rod i 11' is a spring-detent engaging with the wheel 2' The pawl 2 is provided with a tail 4], which, just before the lever 2' completes its movement when rotating the wheel 7?, comes into contact with an adjustable pin 2' and is disengaged from the wheel. This arrangement allows of the wheel '5 and consequently the carriage h being stationary when the plunger f is pressed against the ink-ribbon to print on the paper. In order to insure that the wheel 2' does not move owing to any momentum after the pawl 13* is disengaged, I arrange a stop 17 upon the rod 2'', which comes into contact with the end of the detent Z' and holds it tightly in gear with the wheel '6 By adjusting the screw 2' higher or lower the pawl 2' is disengaged from the wheel 2' earlier or later during the movement of the lever i whereby the movement of the screw 77/ and consequently the spacing between the letters printed by the type are varied.

i is the gong for signaling when the carriage has almost reached the farthest point of its travel, the hammer i of the gong (which is a spring-hammer) being pivoted and provided with an arm which will be moved up and allowed to fall to cause the hammer to strike the gong by the passage under the outer end of the said arm of a weighted arm 71 on the carriage, the arm 1' being pivoted so that as the carriage moves back it will turn upon its pivot without affecting the arm 1' in a similar way to the block 12 j, Figs. 3 and 12, is the column-magnet in circuit with the local battery 1) Fig. 22, which magnet serves to rotate the roller h to feed the paper when it is necessary to start a new line. This is effected through the medium of a gear-wheel j on one end of the shaft of the roller 7L and a gear-wheelj in gear with the wheel j and operated by a weighted pawl 7' carried on one end of the lever t, the said lever being operated from the spring-armature j of the magnet j through the medium of the rod j, the bell-crank leverj, and rod 7' By this construction it will be seen that when the armature j is attracted by the magnet j the lever 2" will be moved and cause the pawl 7' to rotate the wheels 7' and j and roller 72 and consequently move the paper surrounding the same, and at the same time it disengages the tooth 2' from the screw 7Z5, whereby the carriage will automatically move back from a position into which it may have been moved into its original or starting position (shown in Fig. 4) under the influence of the weight 7L The rod 9' extends longitudinally between the rails k so that the lever t" can always be in engagement notwithstanding the movement of the carriage h.

In order that the tooth z' shall not reengage with the screw 72. until the carriage has arrived at its initial position, I provide one of the levers of the bell-cranky with an arm 7' which,when the armature 7' is attracted by the magnet j, will be caused to engage beneath a shoulder j on a spring-lever 3' pivoted to one'of the rails 71 whereby the tooth i will be held out of engagement with the screw 77/ until the carriage, reaching its initial position, strikes the upper end of the lever f and releases the arm 7' when the parts resume their normal position. The lever 7' is shown clearly in Figs. 12 and 13.

j j Figs. 3 and 22, are the terminals of the circuit containing the column-magnet, one of which terminals is moved into contact with the other by an arm 7' on but insulated from the spindle 0. By allowing the arm 0 to move over the pins b 1) without making contact therewith it will bring the arm 7' into contact with one of the terminals 3' and cause the latter to move into contact with the other terminal, thereby closing the circuit and operating the magnet, the arm 0 being stopped in its movement by contact with a pin 7' on the plate 19 which pin acts as a terminal to the circuit, including the starting and printing magnets, similarly to each of the pins b and Z).

7c, Figs. 3 and 11, is the zero-magnet (or solenoid) in circuit with the local battery Z9 Fig. 22. The armature 7c of this magnet is pivoted at k andprovided with, but insulated from, an arm or toothed quadrant k in gear with a toothed wheel 70 on the spindle 0, so that after the arm 0 has been moved by the spring 0 it can be returned to its initial position by the armature 70 being attracted by the magnet 7a. This magnet is energized by the operation of the printing-magnetf the armature f of which is provided with an extension k which, as the said armature is moved, comes in contact with a pivoted bar 70, having an insulated arm 70 which forms one of the terminals of the circuit including the zeromagnet, the said terminal being moved into contact with the other terminal,

f in consequence of the breaking of this circuit shall not allow the bar k to move back also and separate the terminals 10 and it the bar 10 is provided with another arm 71: having an upward projection 10 which, when the bar 10 1s moved forward by the armature f moves behind a shoulder or catch Z on a spring-lever Z, pivoted at Z beneath the starting-magnet 0 In order that the terminals 10 and it shall not be separated until the synchronizing arm has been drawn back to its initial position by the zero-magnet, I provide that when the arm has reached this position it shall come into contact with the upper end of a pivoted bar Figs. 2, 3, and 17, which projects through the table b the lower end of the said bar being in contact with the inclined end of the leverl, so that the movement of the bar Z caused by the impingement of the synline-wire B.

. the. circuits containing the various circuitclosing devices, the said coils serving to diminish sparking, as will be well understood. I also employ condensers for the same purpose carried in the base of each apparatus.

- The operation is as follows: Assume that two apparatuses, as described, are at each end of the line B and having their parts in the positions shown in Figs. 1, 2, 3, and 4: of the drawings, the said apparatuses being termed, respectively, the transmitting apparatus and receiving apparatus. The transmitting apparatus must have the switchlever E moved so as to be in contact with the terminal F, while that of the receiving apparatus must be in contact with the terminal D, as shown in Fig. 23. If now one of the finger-keys a of the transmitting apparatus be depressed, the frame 12 will cause the terminal b to come in contact with the terminal b, thereby completing the local circuit, including the starting-magnet 0 and energizing the same, whereby the armature 0 will be attracted and release the synchronizing arm 0 from the hook which arm, under the influence of the spring 0 will commence to move in the direction of the arrow, Fig. 2. The armature 0 at the same time will come into contact with the terminal 0 and send a current to line B, which will pass through the switch-lever E and terminal D of the receiving apparatus and energize the synchronizing magnet 0 of the same, whereby the armature 0 of the arm a of this apparatus will be attracted and disengage the projection c from the hook 0 By this it will be seen that the synchronizing arms in each apparatus will commence to move simultaneously. The arm 0 of the transmitting apparatus will then come in contactwith the upper end of the spring-pin, which has been lifted by the depressed finger-key, and present a type corresponding with the said finger-key opposite the plunger f the contact completing the circuit through the pin 19, plate 1), battery b terminal terminal 70, printing-magnet f second contact-magnet m, spindle c, and arm 0, and energizing the said magnets f and m. The armature m is consequently attracted and comes in contact with the terminal m thereby sending a current to line B through the terminal F and switch-lever E, which, entering the receiving apparatus through the switch-lever E and terminal D, again energizes the synchronizing magnet of this apparatus, so as to again attract the armature 0 and cause the projection C to be thrust forward, thereby stopping the synchronizing arm a of this apparatus in contact with the spring-pin correspondin g with the spring-pin which has been raised in the transmitting apparatus. This contact of the arm 0 with the spring-pin in the receiving apparatus also closes a circuit including its printing and second contact magnets, as in the transmitting apparatus, but the switch-lever E, being in contact with the terminal D, the second contact-magnet is consequently not in the line-circuit The printing-magnets of both apparatuses being therefore energized attract their armatures which cause the screws lbs to feed carriages it along the rails h the plungers f to move the type to print upon the paper, and the pawls g to feed the ink-ribbon g. The said armatures in their movement also move the bars k so as to make contact between the termin als k and k and break contact between the terminals k and It, the contact between the terminals k and 70 being maintained by the engagement of the shoulders Z- on the bars Z with the projections 70 thereby completing the circuit embracing the zero-magnets 76 k, which consequently attract their armatures and return the arms 0 to their initial or bars 76 to fall back and move the terminals 70 out of contact with the terminals 70 and the terminals 70 to move into contact with the terminals 70. By the operation of several finger-keys identical lines of type in both apparatuses will be printed.

By depressing any one of the fin ger-keys of the transmitting apparatus and releasing it before the synchronizing arm 0 reaches the spring-pin connected to such fingenkey the said arm will pass over all the spring-pins and come into contact with the pin 7' thereby again energizing the printing and second contact magnets, the latter of which again sends a current to line, so as to release the synchronizingarm of the receiving apparatus. The arms 7' in both apparatuses will then come into contact with one of the terminals j and cause it to make contact with the other terminal 7' to complete the circuits containing the column-magnets, thereby energizing the same, so as to attract their armatures and release the teeth 1; from the feed-screws 7Z5, whereby the carriages 71. will be allowed to return to their initial position, the rollers h being simultaneously rotated to commence a fresh line.

By my invention it will be seen that the message is printed in both apparatuses and that the receiving apparatus requires no attendant while receiving a message.

Instead of the paper roll and carriage, as hereinbefore described, I sometimes employ a paper tape, upon which the type print, as illustrated in Figs. 24c and 25. In these figures 0 indicates the tape, arranged in a roll 19 upon a spindle q, revolving on centers 4" 7",

carried by brackets s 8, formed on or attached to the pillars cl (1. The spindle g carries and is rotated by a wheel i similar to that hereinbefore described in connection with the paper rol land carriage and actuated by the printing magnet in a similar manner, the proportions of the connections being slightly modified in order to impart the required amount of feed at each depression of a key a or a. t is a roller for guiding the tape onto the roll 0, the said roller being carried by arms 26 to, connected to the brackets s 8. By this arrangement it will be understood that the columnmagnet can be dispensed with.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- 1, In printing telegraphic transmitting or receiving apparatus the combination of a series of spring-pinsarranged in the arc of a circle finger-keys connected to the said pins,

a circuit-closin g device in connection with the said keys, an arm arranged to work over the pins and provided with a movable hook projection and armature operatively connected, a magnet the armature of which is adapted to engage with the said hook and close the linecircuit, a weight or spring for operating the arm in one direction, a magnet for operating it in the other direction, a magnet for operating the armature on the arm, a series of type arranged in the arc of a circle and connected with the said arm, and a magnet the armature of which is arranged to close the linecircuit, all substantially as described.

2. In a printing-telegraph the combination with the revolving spindle provided with a synchronizing arm, and a series of stop-pins adapted to .be moved into the path of said arm, of aweight loosely mounted on said spindle and means connecting said spindle with the Weight t'ormovement in one direction only, substantially as described.

3. In a printing-telegraph the combination with the revolving spindle, synchronizing arm and series of stop-pins adapted to be moved into the path of said arm, of a weight loosely mounted on said spindle and having a part provided with ratchet-teeth and a part connected with said spindle having a pawl engaging said teeth, whereby said weight will move with said spindle in one direction only, substantially as described.

4. In a printing-telegraph, the combination with the spindle, the synchronizing arm, a series of stops adapted to be moved into the path of said arm, a series of movable type carried by said spindle, a stationary plunger for impressing said type, the paper-carriage and a screw for operating the same, of means for starting said synchronizing arm and moving one of said stops into its path, a printingmagnet for operating said plunger and the said screw, and means for returning the parts to their initial positions, substantially as described. V

5. In a printingtelegraph the combination with the synchronizing arm, and a series of stops adapted to be moved into the path of said arm, of a magnet for returning said arm to its initial position, the printing-magnet a bar operated by the printing-magnet to close a circuit through the returning-magnet, and a part operated by said bar for breaking the circuit through the printing-magnet, substantially as described.

LEO KAMM.

lVitnesses:

CHARLES G. REDFERN, A. ALBUTT.

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