US352435A - Printing-telegraph system - Google Patents

Description

(No Model.) 2 Sheets-She et- 1.

J. 0. WILSON. PRINTING TELEGRAPH SYSTEM.

No. 352,435. Patented Nov. 9, 1886.

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(No Model.)

J. 0. WILSON.

PRINTING TELEGRAPH SYSTEM.

Patented Nov. 9, 1886.

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JOHN C. \VILSON, OF BOSTON, MASSACHUSETTS.

PRINTING-TELEGRAPH SYSTEM.

EPECIPICATION forming part of Letters Patent No. 352,435, dated November 9, 1886.

Application filed January 4, 1886.

To all whom, it may concern:

Be it known that I, JOHN O. WVILsON, ofBoston, county of Suffolk, and State of Massachw setts, have invented an Improvement in Systems of Transmitting Stock-Quotations from a Central Office, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object to provide suitable instruments and arrangement of circuits, whereby stock-quotations may be transmitted from a main oliice over a main line, and at intervals or sub-stations along the main line be automatically repeated, that they may be receivedupon one or more stock-tickers placed in the vicinity of each sub-stati on.

In carrying out this invention I employ at the main station a single transmitter comprising co-operating devices to transmit impulses of opposite polarity immediately followed by an impulse of varying intensity over a main line, and atintervals or sub-stations, as they may betermed,alongthemainline,lhave interposed suitable relays, respectively responsive to such impulses. The magnets respectively controlling the movements of the type-wheel and the operationof the printing mechanism of the several stock-tickers located in the vicinity of any one of the substations are connected in local circuits respectively controlled by the arinatures of the relays at the sub-stations, so that as the relays at the sub-stations respond to the transmitter at the main office they in turn cause the magnets of the stock-tickers to similarly respond, thereby automatically re peating the quotation, that it may be received by the stock-tickers directly from the main office without the assistance of any retransmission at any point, as now frequently practiced.

Figure 1 shows a diagram of a system for sending stock-quotations directly froma main or transmitting station to the local stocktickers; Fig. 2, a cross-section of the transmitting device shown in Fig. 1, and taken on the dotted line m 00, and Fig.8 a plan view of a stock-ticker which may be used in connection with this system.

The transmitter A, located at the main or transmitting station-as, for instance, at New Serial No. 187,518. (No model.)

York, N. Y.containing the main roll a, having stops or projections a about its'periphery,

the levers a, motor a to rotate the main roll nects the transmitting device with the main ment of one of the studs or projections a/upon the main roll, arrests its movement, thereby also arresting the movement of the commutator. lVhile the main roll is rotating im pulses of opposite polarity pass over the main cuit connecting the pen or contact-piece 0,

bearing upon the main roll a, and the wire 5 of the said circuit connecting by means of a contact-screw, c, a conductingstrip passing lengthwise of the transmitter, and to which the contact-pieces 8 are attached, so that when one of the lovers to is depressed, and one of the studs 4 is made-to come in contact with one of the projections to of the main roll to arrest it, the circuit is completed. The currents of opposite polarity pass over the main line 2 and vibrate the armature e of a polarized relay, B, there preferably being several such relays located at intervals along the main line.

The armature e of the polarized relay is grounded and vibrates between two contactpoints, 7 8, from one of which leads a local printing-circuit containing a local battery, B, and one 'or more magnets, as m, controlling the operation of the type-wheels of one or more stock-tickers, the said local printing-circuit terminating in a ground. A neutral re lay, O, is also connected with the main line 2, the normally-grounded armature of which is attracted as the current passes over the line, and is released upon a reduction in the Strength of the current striking the contact-point 10, from which leads a local circuit containing a local battery, B and one or more magnets, as m, controlling the operation of the printing mechanism of one or more stock-tickers. a The magnetm (see Fig. 3) controls the rockshaft m which, by the intervention of the escapement m and ratchet-wheel m rotatesthe type-whee1 m, while the magnet m, attracting its armature m forces the paper printing mechanism against the under side of the typewheel to thereby print .a quotation indicative of the position of thetype-wheel, all as usual. The impulses to which the polarized relay responds being reversals, the neutral relay is not affected; but when the current is weakened by short-circuiting the battery the neutral relay responds. a M It is obvious that a suitable artificial resistance might be momentarily interposed to effect the neutral relay, so I do not desire to limit myself to short-circuiting the main battery, asdescribed'. Thus it will be seen from the previous description that currents of opposite polarity passing over the main line control the local printing-cireuit and operate the typewheel or wheels, while a reduction in the strength of the current controls the local circuit and operates the paper-printing mechanisms. a p

As shown in another portion ofthe diagram, Fig. 1, several stock-tickers (indicated by the letter S) are arranged in the same local type-wheel and paper-printing circuits, which latter are branched, as occasion may requir, so that at a certain city or town along the main line, if it is desired to locate several tickers, necessitating a current having many branches, a single polarized and neutral relay located at a convenient point may 0on trol them all. line a suitable resistance-coil is located immediately beyond which the main line is grounded,while at the centralofi'ice a Wheatstone bridge, w, and a rheostat, w, are interposed, the arms of the bridge being adjusted as usual in duplex telegraphy. A relay, R, controlling a signaling device, is contained within the bridge, w, which is insensible to currents passing over the main line from the main station, but sensible to any change in the circuit-as, for instance, an accidental ground-break or cross-wire, which cuts out the resistance near the end of the line, thus disturbing the balanced condition of the circuit. It will be seen that this feature is essential, owing to the fact that, suppose the line should be accidentally grounded midway, and a portion only of the polarized and neutral relays located at the sub-stations should operate, stock-quotations would be received at Near the end of the main;

some points and not others, and serious results might occur between the brokers and individuals using them.

By the system herein' described a central office containing a transmitter constructed substantially as described may be located at,

say, New York, N. Y., and a main line extend therefrom to a distant point as, for ,instance, Boston, Massachusetts-and at intervals all along the line a pair of relays controlling local circuits, as described, may be interposed, and one or more tickers may be connected with the said local circuits and controlled as to their operation by the relaysas, for instance, at any one or all of the large cities and towns between New York and Boston-thereby obviating the necessity of maintai'ningat each place where it is desired to locate one or more tickers a retransmittingstation and an operator, which incurs so great expense as to preclude many persons from using the stock-tickers, and by retransmission of the quotation at every repeating-station, as now practiced, errors are liable to occur owing to the carelessness of anoperator.

I have herein shown a permanent resistance located at the remote station, and a relay connected with the circuit at the transmittingstation, and means for adjusting said relay that it may be insensible to currents passing through it from the transmitting-station, but sensible to any change in the condition of the circuit between said rela' and the remote station containing the resis ance, to thereby inform the transmittingstation of any irregularity in the line; but such devices and arrangernent of the circuits I do not herein claim, as the same form the subject matter of another application filed by me October 6, 1886, Serial No. 215,466.

I claim- 1. In a system for the distribution of stockqnotations, a main electric circuit containing a main or transmitting station and one or more sub-stations, a single transmitter comprising cooperating devices located at the said main station that transmits impulses of opposite polarity over the said main line, and also impulses of different intensity, two relays located at each sub-station,- one of which is responsive to the impulses of opposite polarity and theother responsive to the impulses of different intensity, two local circuits respectively controlled by the armatures of the "said two relays, magnets in said local circuits,

and the type-wheel and paper-printing mechof the two main batteries-co-operating with from a single main or transmitting station to the commutator to send impulses of opposite several sub-stations, and in automatically repolarity over the main line, a contact-piece peating both kinds of impulses to one or more 15 cooperating with the main roll, and a constock-tickerslocatedin the vicinity of the said ductingstrip to which the printing-levers are sub-stations.

connected, said conducting-strip and contact- In testimony whereof I have signed my piece being connected by a circuit dividing name to this specification in the presence of the battery to thusvar'y'the intensity of the two subscribing witnesses.

current, all substantially as described. JOHN 0. WILSON.

3. The method herein described of distrib- Witnesses: uting stock-quotations,which consistsin trans- BERN. J. NoYEs, mitting impulses of two different characters F. OUTTER.

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