US875643A - Printing-telegraph. - Google Patents

Description

PATENTED DEC. 31, v1907. J. 0. BARCLAY.

PRINTING TELEGRAPH. APPLICATION FILED APR. 22, 1905.

v lll lllllli g Q INVENTOR I v rakc fl eqg ATTORNEY J. G. BARCLAY.

PRINTING TELEGRAPH. APPLICATION FILED APR.22-,1905.

PATENTED DEC. 31, 1907.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

JOHN C. BARCLAY, OF NEW YORK, N. Y., ASSIGNOR TO WESTERN UNION TELEGRAPH COMPANY, OF NEW YORK, N. Y.,

A CORPORATION OF NEW YORK.

PRINTING-TELEGRAPH.

* Specification of Letters Patent;

Patented Dec. 31, 1907.

To all whom' it may concern:

Be it known that I, JOHN C. BARCLAY, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Printing-Telegraphs, and I do hereby declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relatesgto improvements in printing telegraph systems, and particularly to what are known as stock-ticker systems, and my invention consists in means whereby a two-wire ticker or printer circuit may be operated from a distant transmitter over a single line circuit.

- The objects of my invention are, to facilitate the operation of telegraph printers requiring more than one operatlng circuit, from a distant transmitter; to permit use of a single circuit to transmit all of the signals required for the operation of such multiplecircuit printers; and generally, to produce a simple, reliable and efficient printing telegraph system.

In the accompanying drawings Figure 1- is a diagrammatic view showing the circuits and instruments of one embodiment of my invention; Fig. 2 is a diagrammatic perspective illustrating diagrammatically the essential features of a two-wire ticker such as that referred to herein.

I will describe my invention with particular reference to the two-wire printing telegra h illustrated and described in United States etters Patent to Phelps, N 0. 726,566,

dated April 28, 1903. The printing instrument shownin said patent is of the general stock-ticker ty e, comprising two typewheels mounte on a common shaft and driven by a spring-motor, their rotation being controlled by an escapement-magnet and escapeinent mechanism controlled hereby. Said printer also comprises a press magnet in the same circuit as the escapement magnet and arranged to be operated by a prolonged pulse in said circuit; and said printer further comprises a shift magnet and a spring-winding magnet, both located in the same circuit, which is separate and distinct from the circuit of the escapement and press magnets the spring-winding magnet bein operated by periodic, current I second circuit, independent of their direction, and the shift magnet being operated by reversal of direction of current in said second circuit. In the present system, the various signals from the transmitter are for the operation of the escapement and press magnets of the printer or printersare transmitted through the corresponding local circuit, and the signals for the operation of the shift magnets are transmitted through their corresponding local circuit. The employment of a single line circuit for transniitting all of the signals from the transmitter to the translating apparatus renders of printing telegraphs or tickers in one locality from a distant city or lo'cality.

In Fig. 1 of the accompanying drawings I illustrate one embodiment of my said invention diagrammatically. Said drawing shows diagrammatically, at A, the transmitting apparatus and circuits, and at B the translating apparatus and circuits, and a series of printers controlled thereby, the two station's being connected by a line wire L which may be of considerable length. The various parts of the transmitting mechanism are illustrated only diagrammatically, as the construction of these parts is well understood; and I do not illustrate the construc tion of the receiving fully illustrated and escribed in the said Phelps patent No. 726,566.

Referring first to the transmitting apparatus, at A, 1 desi nates a revoluble shaft, driven in any suita 1e or customary manner, and 2 designates the rotary contact armof a sunflower 3, said arm bein carried by shaft 1.

4 and 5 designate two Iianks of keys of a suitable key-board, only three keys of each bank being shown, though it willbe'understood that in practice there will be a much greater number. vThe keys of both banks are shown arranged to make contact, when depressed, with a common row of contact points located between the banks of keys. 6, 6, 6 designate neutral relays each electrically connected to and controlled by a corresponding keyof bank 4 and also a cor- '/responding key of bank 5; the contact point 3. yiously, the arrangement is such,

transmitted through a single line circuitto" translating mechanism, by which the signals it economically-practicable to operate circuits rinters as these are when a key of either bank is depressed the corresponding relay 6 is energized and the circuit to the corresponding sunflower segment completed. In the said Phelps patent above mentioned, the transmitter keys are connected in circuit with their corresponding sunflower segmentsdirectly; but in practice it is preferred to cause the keys to operate relays controlling the circuits of the sunflower segments, as here shown.

7 designates a generator supplying current for local purposes, and 8 and 9 POSltlVG' and negative current leads thereof. 10 designates a ratchet wheel on shaft 1, 11 a stop magnet, and 12 the armature of said magnet, adapted, when the magnet is energized, to engage said ratchet wheel and arrest the rotation of shaft 1. Said magnet is in a local circuit 13 passing from current lead 9 through magnet 11, 'to the rotatingarm 2 of the sunflower and thence, when said arm makes contact with a sunflower segment the circuit of which 18 completedby the corresponding relay 6', through such sunflower segment and relay contact to current lead 8. It follows therefore, that when one of the transmitter keys, of either bank, is depressed, as soon as the sunflower contact arm makes contact with the sunflower segment corresponding to that key, stop magnet 11 is energized, and the rotation of shaft 1 is stopped until said key is released.

Shaft 1 carries a commutator, 14, of wellknown construction, the brushes of which commutator are included in a circuit 15 passing from current lead 9through the commutator and the magnets of two polar relays 16 and 17 back through the commutator to current lead 8. This commutator reverses the direction of the current in circuit 15, as shaft 1 rotates, causing the armatures of relays 16 and 17 to vibrate back and forth.

Numerals l8 and 19 designate two similar enerators, for supplying current to the line, laying unlike brushes connected toground at 20, their other brushes being connected through wires 21 and 22 to opposing contact stops of relay 1 6. The armature of this relay is connected by wire 23 to the two contactstops of relay 17; and the armature of said latter relay is connected, through means hereinafter described, to the line circuit L. Since the armatures of relays 16 and 17 are vibrating back and forth rapidly whiletransmitter shaft 1 is rotating, generators 18 and 19 are connected to theline alternately, and thus the current in the line is reversed rapidly while shaft 1 is rotating. 'So far as the alternate connection of the two generators 18 and 19 to'the line is concerned, a single polar relay might be used; but it is found that by employing two relays, arranged as shown, and by connecting a condenser 2% across the stops of relay 16, as shown, the sparking at the contact points and brushes may be reduced greatly. v p

Numeral 25 designates a polar relay employed for effecting the operation of the shifting devices of the receiving printers. A circuit 26 passesfrom a universal contact bar, of the bank of keys 4 through one of the two opposed. magnets of this relay to wire 27' and thence to current lead 8. This circuit is completed 'whenever one of the keys is depressed. A similar circuit .28 passes from a universal contact bar of-the bank'of keys 5- to the other of the said two opposed magnets of relay 25 and thence to wire 27 and so'to current lead 8. This circuit will be completed when any one'of the keys of bank 5 is depressed. Relay 25 controls the circuit 29 from current lead 8through the contact of said relay to the magnet of a relay 30, which may be termed the -shift relay and thence back to current lead 9. This circuit is broken when circuit 26 is complete but is closed when circuit 28 is complete. Another relay 31, termed the repeat'relay is in a circuit 32 which passes from current lead 8 to the magnet of relay 31 and thence to a repeat key 33, arranged when operated to close said circuit, and back to current lead 9. A line circuit L passes from the armature of relay 1.7 to the back stop 34 of shift relayv 30 and thence through the armature of said relay to the back stop 35 of repeat relay 31,

and thence through the armature of relay 31 to the translating apparatus of station B. There is a shuntconnection 36 from the armature of relay 17 to the armature of shift relay 30, this shunt connection resistance 37 which in practice is of about 400 ohms.

lay 30 is concerned whether the armature of said relay be in contact with its rear or with relay 30 isin. contact with its front stopthe resistance 37 is in circuit, and therefore the line current is weakened. of relay 30 is connected to a leak 39, therecontaining a Because of this shunt connec-: tion, the hue circuit 18 complete so far as re' its front stop; though when said armature of The front stop 38 sista'nce of which is in practice about 1550 ohms; and this leak cooperates with the res stance 37 in shunt circuit 36- to reducethe l ne current when the armature of shift relay is in contact with its front stop. Repeat-relay 31 is provided with a shunt connection 40 j between its back stop and its armature, said shunt connecticn'contaimng a very high resista-ncev 41-in practice a resistance of about 12000 ohms. Therefore, when the magnet of the repeat relay is energized the line circuit is not broken at said relay, but the resistance in the circuit is increased so enormously that the effect is yery nearly the same as it would be if the circint were broken. high resistance peat relay rather than to break the-circuit,

It is preferable to introduce a by the operation of the re in order to hold stationary the armature of relay '45 of the translating apparatus, 1

Referring now to the circuits and instruments of the translating apparatus at station B, current for such apparatus is supplied by local generators 42 and current leads 43 and 44. The line wire L is connected to a polar relay 45, the stops of which are connected to the two current leads and the armature of which is connected to a circuit 46 passing through a rheostat 47 to the front stop of a relay 48 termed the local repeat relay. Said circuit 46 passes from the armature of relay 48 through the printers or tickers of the system, said circuit in practice passing through the-escapement and press magnets .of such printers (not shown) and serving to control the rotation of the type wheels and the operation of the press arms thereof. Said circuit is hereinafter termed the printing circuit. It will be noted that relay 45 repeats in circuit 46 the current reversals produced in the line circuit bytransmitting relays 16 and 17. A condenser 49 is shunted around the magnets of relay 45.

The line circuit L passes from the magnet of relay 45 through the magnet of a neutral relay 50, termed the local shift relay, and through magnets of relays 52 and 48, hereafter mentioned, to ground; the ground connection including a shunted condenser 54, as shown. Local shift relay 50 is so adjusted that when the armature of relay 30 is against its back stop, and the current in the line circuit L is relatively strong, the armature of said local shift relay 50 is in contact with its front stop, and a circuit 56 is completed from current lead 43 through the shift relay contact and through a regulating rheostat 55 to the printers or tickers of the system. In practice, this circuit 56 works the shift and spring -winding mechanisms of the said printers, and is hereinafter termed the shift circuit. The operation of the shift meclranisms of the several printers is accomplished by reversing the direction of the current in this circuit 56, which reversal occurs when relay 30 is energized, so that resistance 37 is included in the line circuitand the leak 39 is connected to said line circuit. When this occurs, the strength of the line circuit is so reduced that the armature of relay 50 is pulled back, and circuit 56 is connected to the opposite current lead, 44. When relay 30 again operates and cuts resistance 37 out of the line circuit and disconnects the leak 39,

the armature of relay 50 is again attracted,

and the direction of current in circuit 56 again reversed, thus operating again the shift mechanism of the printers.

For winding up the spring or other motors of the printers, current pulses are transmittod at intervals through the flshift circuit. For this purpose a relay 51, operated automatically by an intermittent current produced by a generator 57 or otherwise, is employed. This relay is adapted to complete connection from current lead 44 through the back contact of local shift relay 50, if such back contact be complete,.to shift circuit 56. To avoid complication, 1 cause this springwinding relay to operate only when the shift relay armature is in one of its two positions; though it is easy to cause the spring-winding relay to operate with'the said armature of re lay 50 in either position. Howerer, it is sufficient to operate the spring-winding mechanism at intervals only, and the connections and apparatus are somewhat simplified by employing current of one direction only to operate the spring winding mechanism, and by permitting this current to be transmitted only when the armature of the shift relay is in a corresponding position, so that the shift mechanism of the printers will not be affected by the spring-winding pulses.

The controlling circuit 5h of the springwinding relay passes through a contact of a line relay 52 which breaks said circuit whenever a prolonged pulse, such as causes the operation of the shift mechanism of the printers, passes through the line circuit; the spring of this relay being so adjusted that during the normal alternation of current pulses in the line circuit, circuit 5b remains closed. This relay 52 insures that the back stop of the local shift relay 50 shall be connected to current lead 44 whenever the shifting mechanism is to be operated.

Local repeating relay 48 is so adjusted that it operates only when the current in the line falls nearly to zero, as is the case when, through the operation of the repeat key 32;, the very high resistance 41 is included in the line circuit. \Vhen this occurs, the armature of relay- 4%; falls back and opens the printing circuit. ,W'hen repeat key 33 is released and the high resistance 4] cut out of the circuit, the armature of relay 48 is again attracted, and the printing circuit is again connected to one of the current leads, thus producing in said circuit a second long pulse and causing the operation of the press mechanism, whereby the character last printed will be printed a second time. In this way, by operating the key 33, a character may be repeated as often as desired.

If the repeat key 33 be operated. while the armature of shift relay 50 is against its front stop, said armature ialls back, thus operating the shift mechanism of the printers: but since the repeated character is-mot printed until the releaseof key 33, and since relay 50 is very much more rapid in operation than relay 48, upon the release ofthe key 33 the armature of relay 50 moves forward again and brings the shift mechanisms of the printers back to their normal condition before. the.

press mechanisms of the said printers operate. In this way, a character of either bank of keys may be repeated by means of key 38.

When a number of printers are to be oper ated from the same line circuit and translating apparatus, I preferably employ a plurality of separate printer circuits, each including'merely the number of printers which can be worked to advantage in series. Each such printer circuit then has its corresponding line polar relay and line shift relay, said line polar relays and shift relays connected in multiple branches of the line circuit, as indicated in the drawing, in which 45 and 50 designate another line polar'relay and shift relay for a second printer circuit. In'this v way I avoid excessive impedance, self-induc- P, P, without used tion etc. in the line circuit, and excessive sparking atthe contact points of the relays.

In the diagram I illustrate diagrammatically two series of printers, P, P, P, and P, attempt to illustrate the .mechanism of said printers, which is well known.

Fig. 2. shows the essentials of one of the many forms of two-wire tickers which may be in my. system. In said drawings, M designates the main or type wheel shaft, N and N designate type wheels thereon, 0 an escapement wheel, 0 an 'escap'ement anchor Q designates a pinion on said shaft through which the shaft may be driven from "a motornot shown. R designates a press arm operated by magnet,R and carrying. pads S and S mountedtobe shifted alternately into operative position by the shifting arm T operated by shl-ft'magnet T.

1s a magnet for Windmg a spring motor, not shown, for driving the The operation of this system is. as follows: i

, type wheel shaft.

tlon owing to the rapid hown, type wheel ma net T and spring winding magnet U are in t e same circuit,-which is circuit 56, of Fig. 1; Y and; the eseapement magnet O and press magnet R circuit'46 of Fig. 1.

of relay at station B. will be in rapid vibrareversal of the current in circuit 15 by commutator 14. When one of the transmitter keys, for example, one of the keys offbank 4, is depressed, as soonas e contact? arm of the sunflower makes con= tact with the corresponding contact segment the stop magnet 11 will be energized, the rotationof shaftll arrested, thus arresting the vibration of. and

the'consequent vibrati on of the armature thus producing in circuit 46 a ulse which willenergize the press magnetic the,'several printers in circuit 46, causing said printers to 'print"- the character are in another circuit, which is the the armatures of relays l6 and 17 l b corresponding to the key depressed. If, instead of a key of bank 4, a key of bank5 be depressed, the same operations will occur, butin addition, the armature of relay 25 will be reversed, closing circuit 29 and thus ener-' gizing the magnet of shift relay 30. The shift relay when it operates introduces resistance 37 into the line circuit and connects the leak 39 to such line circuit, thereby decreasing considerably the strength of the line current; and such decrease will so reduce the strength of the magnet of relay that the spring of said relay will draw back the armature there'- of, thus reversing the direction of current incircuit 56. As soon as the key operatedis 1 released, shaft 1 and commutator 14 begin to rotate, the armatures of relays 16, 17 and 45 beginto vibrate again, and the armature of relay 51. breaks contact with its front stop.

After the depression of one of keys 5 and consequent operation of the-shifting devices, said devices remain in their shifted condition until one of keys 4 is depressed, whereupon the armature of relay 25 will be deflected to the right, breakingthe circuit of shift relay'30 and'thro\i-'ing out of .circuit resistance 37 and leak 39, and thus increasing the-strength. of

current in the line so that relay 50 will attract its armature and, relay 51 operating simultaneously, the polarity in circuit 55 will be reversed again, and the shifting mechanism of the several printers operated accordingly.

It is obvious that the system herein dc scribed is susceptible of many variations and modifications and I do'not limit myself to the particular details of construction, arrangement and operation herein illustrated and described. I

In the diagram I have shown the various current leads provided With fuses, resistance and indicating lamps, etc These parts and their functions are well known and it is not necessary to describe them in detail.

That I claim is:

1. YA printingtelegraph system comprising n combination, a line circuit, one or more multi-circuit printers comprising printing and shift mechanisms-each having inde end-. entcontrollingmeans, printing and shi t circuits for said printers, a transmitter for said printers comprising meansfor producing a pulsating current in such line circuit and for PIOlOIIgI gIIg the pulses therein at will, and compris g also means for producing other class of signals in said line, circuit, and a .transla'ting apparatus se arate and distant from said transmitter and printers, but connected with saidftransmitter through said line circuit, and comprising means operated and the prolonga- 4 tion of pulses therein, controlling the printingcircuit of saidprihters and comprislng also means'o erated by the other class of signals in said ine circuit for controlling the shift circuit of said printers.

translating apparatus comprising means operated by one class of signals .in said line circuit for operating printing mechanism in a printer, and'further com rising means controlled by another class of signals in the line circuit for operating shift mechanism of a printer, and'further comprising means operated by a third classof signals in said line circuit for causing repetition of the character last printed. i

3. In a printing telegraph system, the combination of a transmitter, translating apparatus, a connecting line circuit, and printing and shift circuits for a printer controlled by said printing apparatus, said translating apparatus comprising means operated by one class of signals in said line circuit for producing an alternating current'in such printing circuit and for prolonging one pulse of such current atwill, said translating a paratus further comprising means controlled by another class of signals in the line circuit for controlling said shift circuit, and further comprising means controlled by a third class of signals in the line circuit for transmittin through such printing circuit an additiona pulse of the same direction as the preceding pulse.

4. In a transmitter for printing telegra h systems, the combination of means or transmitting an alternating current through a line circult, a sunflower and contact arm therefor passing over the contacts of said sunflower in synchronism with the alternations in said circuit, a keyboard and means operated by the several keys thereof for arresting said sunflower contact arm in corresponding positions and simultaneously procircuit, and shift an repeat re ays, arranged when operated to vary the current strength,'one to a greater extent than the other, and means for operating said relays.

5. In a transmitter for printing telegra h systems, the combination of means or transmitting an alternating current through a line circuit, a sunflower and a contact arm I therefor passing over the' contacts of said sunflower 1n synchronism'with the alternaf longing the correspondin current ulse insai tions in said circuit, a keyboard and means operated by the several keys thereof for arcrease or increase the strength of the line current according to ,the position. of its armature, and a second relay controlling saidvshift relay, and controlled by the keyboard.

7. In a transmitter for printing telegraph systems, the combination of means for transmitting an alternating current through a line circuit, a sunflower and contact arm therefor passing over the contacts of said sunflower in synchronism with the alternations in said circuit, .a keyboard and means operated by the several keys thereof for ar-v resting. said sunflower contact arm in corresponding'positions and simultaneously prolonging the corresponding current pulse in said circuit, a repeat relay and a high .resistance conductor arrangedto be introduced.- thereby into the line circuit,and a circuit for said relay and a repeat key controlling the same.

8. In a printing telegraph system, the combination with a line circuit, and a transmitter comprising means for transmitting an alternating-current and for prolonging one of the current pulses at will, and further comprising means for reducing at will the strength of the line current, of translating ap aratus comprising a line polar relay in such line circuit arranged to repeat the alternations in such circuit into a local printer circuit, and a line neutral shift relay in the said line circuit, operated by increase and decrease of line current strength, and controlling a local printer shift -circuit.

9. In a printing telegraph system, the

.combination with a line circuit, and a trans- -m1tter comprising means for transm ttmg'an alternating current and for rolonging 'one of the current pulses at will, and further comprising two independent means for reducing the strength of the line current, one to a greater extent than the other, of translating apparatus comprising a line polar relay in such line circuit arranged to re eat the alternations in such circuit into a coal printer circuit,and comprising further line neutral shift and repeat relays, the repeat relay operated by a relatively great decrease in strength of the line current and arranged,

by its operation to transmit through the local printer circuit controlled by said line 'polar relay an additional prolonged current pulse of the same polarity as the preceding pulse, the shift relay operated by a relatively smaller de creasein strength of the line cur- ,rent and controlling a local printer shift circuit.

10. Ina printing telegraph system, the combination with a. line circuit, and a transmitter comprising means for transmitting an alternating current and for prolonging one of the current pulses at Wlll, and further comprising means for reducing at will the strength of .the line current, of translating apparatus comprising a'line polar relay in such line circuit arranged to repeat the alternations' in such circuit mto a local printer circuit, and comprising further a line neutral further a motor winding relay automatically operated and'arrangedto transmit period ic ally through said shift circuit current pulses to operate motor winding mechanism of said printers.

11.. In a printing telegraph system, the combination with a line circuit, and a trans mitter comprising means for transmitting an alternating current and for prolonging one of the current pulses at will, and further comprising means for reducing at will thestrength of the line current, of translating apparatus comprising a line polar relay in such line circuit arranged to repeat the alternations in such circuit into a local printer circuit, and comprising further a line neutral shift relay operated by increase and decrease of line current strength, and controlling a local printer shift circuit, and comprising further a motor winding relay automatically o erated and arranged to transmit periodic ally through said shift circuit current pulses to operate motorwinding mechanism of said printers, and means preventing interference between theshift and motor Winding relays.

12. In a printing telegraph system, the combination with a line circuit, and a transmitter comprisingmeans for transmitting an alternating current and for prolonging one of the current pulses at will, and further comprising means for reducing at will the strength of the, line current, of translating apparatus comprising a line polar relay in such line circuit arranged to repeat the alternations in such circuit into a local printer circuit, and comprising further a line neutral shift relay operated by increase and decrease of line current strength and ar ranged to reverse current direction in a local printer shift circuit, and comprising further a motor Winding relay automatically driven and arranged to render intermittent the current in said local printer shift circuit Without change of the direction of the cur rent therein.

13. In a printing telegraph system, the combination of a transmitter, translating apparatus, and a connecting line circuit, said translating apparatus comprising means controlled by signals in the line circuit for controlling printing mechanism of a printer through a local printing circuit, and comprising further means controlled by other signals in the line circuit for reversing the direction of current in a local shift circuit of such local printer, and comprising further a motor Winding relay automatically driven and arranged to render intermittent the current in saidiocal printer shift. circuit Without change of the direction of the current therein. i

14. In a printing telegraph system, the combination of a transmitter, translating apparatus, and a connecting line circuit, said translating apparatus comprising means controlled by signals in the line circuit for controlling printing mechanism of a printer througha local printing circuit, and coniprising further arelay controlled by other signals in the line circuithaving opposed contacts connected to sources of current supply of opposite polarity, said relay ar-- strength of the line current, of translating.

apparatus comprising means operated by current reversal in such line circuit for operating printing mechanism. of, a local printer through a local printer circuit, and comprising further a relay controlled by other signals in the line circuit having op posed contacts connected to sources of current supply of opposite polarity, said relay arranged thereby to reverse the direction of current in a local shift circuit of said printer,

said translating apparatus comprising iurther a motor Winding relay automatically operated through a local circuit and having a contact interposed between. one of the contacts of said first relay and the corresponding source. of current supply. and another relay located in said line circuit, but adjusted to respond only to prolonged pulses therein, said last-named relay comprising a contact through which the operating circuit of said motor Winding relay passes, which contact is broken when the last-named relay responds to a prolonged pulse.

16. In a printing telegraph system, the combination of a transmitter arranged to transmit an alternating current through a line circuit comprising means for prolonging oneof the current pulses at u ill. translatin apparatus and a connecting line circuit, saio translating apparatus comprising a shift relay controlled by appropriate signals in the line circuit and arranged to control shift mechanism of a printer through a local shift circuit, said translating apparatus further comprising a motor winding relay automatically operated through a local circuit and arranged t produce a pulsatory current in the circuit ontrolled by said shift relay, and another relay located in said line circuit, but adjusted to respond only to prolonged pulses therein, and comprising means rendering said motor winding relay ineffective upon such shift circuit during the transmission of a long pulse through such iine circuit. 7

17. In a printing telegraph system, the combination of a transmitter, arranged to transmit signals for operating printing and shift mechanism of a printer, translating apparatus and a connecting line circuit, said translating apparatus comprising a plurality of sets of printing circuit and shift circuitvrelays, a plurality of two-circuit printers comprising irinting mechanism adapted to be operate by a printing circuit and shift mechanism adapted to be operated by a shift circuit, and separate printing and shift circuits for each of said printers, controlled by corresponding printingcircuit andshift circuit relays of said translating apparatus;

said sets of relays connectedin multiple to the line circuit.

18. In a printing telegraph'system, the

" combination of a transmitterparranged to transmit signals for operating printing and shift mechanism of a printer, translating ap paratus and a connecting line circuit, said translating apparatus comprising a plurality of sets of printing circuitqand shift circuit relays, aplurality of two-circuit printers com-. prising rinting mechanism adapted to be operate by a printing circuit and shift mechanism adapted to beoperated by ashiftcircuit, separate printing and shift circuits for each of said printers, controlled by corresponding printing circuit and shift circuit relays of said translating apparatus; said sets of relays connected in multiple to the line circuit; and a single repeat relay likewise connected to thelline circuit and arranged tocause repetition of rinting in all of the said printers controlled by said translating appaa ratus.

In testimony whereof I affix my signature in the presence oftwo witnesses.

OHN G. BARCLAY.

Witnesses:

B. STEIN, O. A. Van BRUnT.

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