US849171A - Electric signaling. - Google Patents

Description

.NO 849,171. v PATENTED AP 2', 1907.

J. B. STRUBLE. ELECTRIC SIGNALING.

A' PLIGATIQN FILED DEG. 3/1902. RENEWED JAN. 17, 1906. I

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No. 849,171. PATENTED APR. 2, 1907. J. B. STRUBLE.

ELECTRIC SIGNALING.

APPLICATION FILED DEC. 3, 1902. RENEWED JAN. 17. 1906.

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BEHVEEHEOR PAT" OFFEQE- JACOB B. STR L'BLE, OF WILKINSBURG, PENNS LVANLA, XSSIGNOR TO THE UNION SWITCH & SIGNAL COMPANY, 02: HWISSVATJt; PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

ELECTFUG SlGINALING.

T (LZZ whom it may concern:

Be it known that 1, JACOB B. STEUBLE, residing at Nilkinsburg, in the county of Allegheny and State of Permsylvania, a citizen of the United States, have invented or discovered certain new and useful Improvements in Electric Signaling, of which the following is a specification.

In application filed December 3, 1902,

Serial No. 1

claimed certain improvements in and relating to railway signaling involving the -employment of alternating current in the trackcircuits for the operation or control of the i5 signals and having for its object the controlling of a signal or signals of one section by a signal or signals of another section through 1 a modification or change in one or more of the characteristics of the current in the 3 track-circuit.

The invention described herein has for its object a construction and combination of-- ap rihratus whereby a signal or signais of 030- section can be controlled in accordance with 2 5 the conditions on another section by etle cting a displacement of the normal phase relation of t alternating signaling current in the track circuit.

The invention is hereinafter more fully described and claimed.

in the accompanying drawings, Figure l is a diagrammatic view of a portion of a rail n'ay-iraclc, showing the block-sections uuoc cupicd and the signals clear and embodying 55 my invention. Fig. 2 is a similar view show- 1 ing one of the traclosections occupied and the signals indicating such condition, and Fig. 3 is a similar view illustrating a modified form oi signal-controlling motor.

Similar reference characters designate i corresponding parts in all of the figures. i

In the practice of my invention the line of I rails 1, which is made electrically continuous,

is connected to one pole ot'an alternating 5 generator 6, which has its other terminal connected to the t'oc lwire 7. The other line of l rails is divided by suitable insulation into a series of sections 2, 3, &c., of suitable length. Home and distant signals 4 and 5 on the same post are arranged at the entrance ends or'zthe sections and are adapted to be operaled either directly by the currents in the trackcircuit, as shown and described in the l Specification of Letters Patent.

circuits.

33,711, I have described and i' feed-wire 7. 3 former has one terminal connected to the Patented Aprilz 1905A Serial No. 296,445.

1 application. above referred to, or the operating m chanisi 17 and 18 oiflthe signals are included in independent circuits controlled through suitable mechanisms bythe tracklt is preferred when independent signal-operating circuits are employed that they should derive their currents from the generator fi by including the primary of a transformer 19 in the circuit of the generator 6 and the secondary of the transformer in the signal-operating c rcuits, as shown. These signal-circuits contain in ake-and-break mech- 6 5 anisms consisting of contact- plates 32 and 33 and movable fingers 30 and 31, connected to movable members of motors operating as hereinafter described At each section the primary of a trans- 7o former A has its terminals connected, re-

spectively, to the continuous rail 1 and the The secondary of the transcontinuous line of rails 1, while the opposite terminal is connected to one of a pair of contact-plates 11 the member being connected 'to one term nal of a reactance or phasedisplacing coil 40, which has its other terminal connected to the rail-section 2.

The plates of the pair 11 are arranged so as to be electrically connected by the movable member 12 of the circuit-shifting mechamsm, which is operated in accordance with the conditions existing on sect-ion 3 and preferably by the home signal 4. This movable member 12 whenshifted from the plates 11 will connect a pair of plates 10,

1 one of which is connected to an intermediate terminal of the secondary 9 of the transo 1 former and the other plate to the rail-sec.

1 tion 2 in such a manner as to form a circuit around the reactive coil 40. By changing the ratio of the transformer in the manner stated, which is similar to that (escribed and shown in the application ref vrred to, theilowcring of the power factor due to the phase displacement when reactanoe 40 is in circuit is compensated ior. h resistance 13 is interposed in the track-circuit, so as ion to prevent an excessive flow of currentin the track when latter is short-circuit-ed by a train. I

- The translating device or motor B consists of cores or poles 24, having the coils in series with the track-circuit of section 2 a'closed circuit 54.

and a disk 29 pivotally mounted so as to be movable between the poles. The poles of the motor are slotted, forming sections, i

one of which on eachT fiole issurroimded by e motor'is connected to the finger -30, controlling the OllCulbOf home signal 4, and is so constructed and rodevice or motor C has one of its ole-pieces,

as 41, surrounded by a coil 42 o comparatively few turns, s'aidcoil being in series with the coil '25 of motor B and respons ve to-current-wave. The other poleiece 44 iii-surrounded by a coil 43 of relative y many turns and having its terminals connected across the track-circuit ofrse'ction and responsive to pressure or voltage wave. This mechanism is similar to that found in the wattmeter and crates on the same principle. The mova le member or disk 29. of the motor is connected to the finger 31, controlling the circuitof distant signal 57 The motor is so designed that when the. voltage and current on the track-circuit are in phase 5. 6., when themovable member 12 connects the plates 10, the signal 4 of section 3 coin at danger,-the disk 29 will not be shi tecl and the circuit'of distant signal will be open and the signal at caution; but when the contact-plates 11 are connected by the movement of signal 4' to" clear the voltage and current in the traclecircuit of section will be thrown out of phase and a shifting field produced, in motor (7, thereby causin'g such a movement of disk 29* as to bring finger 31' in contact with plate 33, closing u the circuit of'signal 5, causing the same to go to clear position.

In order to prevent any disturbing influence due to reactancc which the magnets having pole-pieces 24 and 4 with their coils may have on the pha'se relation in the cirsuit, so as, to partially nullify the operation ofthe motor 0, a condenser 45 may be -m ployed.

In order to prevent the reactance or phase displacer 40 from producing a phase displacement in the main feed-wire 7, and thereby produce objectionable effects on other trackcircuits signal mechanism supplied by the feed-wire, a condenser 46 may he placed in circuit with the primary or secondary of the transformer A or in circuit with both.

In lieu of using two controlling-1n0tors,

as shown. in Figs. 1 and 2, and maintainin a uniform power factor in the track-circuit y changing the ratio of the transformer simuler into taneous with a change of phase the construc- -tion andarran ement shown in Fig. '3 may .or both cores is surrounded by coils and '36 in'aclosed circuit. 7

In lieu of changing the ratio of the transformer with the c iange of phasethe'ratio of the transformer ismaintained constant, so

that a change of the power factor will-result when'the reactance-coil is connected in circuit as described i. 'e., the active current is reduced; The contact- fin ers 30 and 31 are connected to the disk 29 y a link which has a slotted connection with a weight 38, and'the motor is so-constructed that when the power factor of the current in the trackcircuit is high-'i. 6., when the reactance 40 is cut out, the signal 4 being clear-suflicient power will be developed to raise the weight and bring fingers 30 and 31into contact with the plates 32 and 33, closing the circuits of Signals 4' and 5, causing them to indicate clear. When si nal'4 goes to danger,. the reactance will e connected in series in the track-current, thereby changing thenormal phase relation of the voltage, With the" current accompanied with a reduction of the power factor or active current, so that the motor can no lon 'or sustain the Weight, and the finger 31 wi 1 be shifted from contact with plate 33, thereby breaking the circuit of signal 5, which will then go to caution..

I claim herein as my invention- 1. In a signaling apparatus for railways, the combination of a source of alternating currents, a track-circuit for said currents,

Ttwo signaling mechanisms operative by said track-cirouit currents, and means for changing the'normal phase relation of the voltage with the current for effecting an operation of one of-said mechanisms and not the other, substantially as set forth.

2. In asignaling apparatus for railways, the combination of a source of alternating currents, a track-circu t for said currents, a signaling mechanism operative by such traclccircuit currents regardless of the phase relation of the voltage with tho track-circuit current, a signal mechanism oporat ivo by such currents on a displacomon t ol t he phase relation of lhe voltage with the current and means for cflectiug such phase displacement, subsl ant ially as set forth.

3. in a signaling system, the combination ofa luhnc signal, a distant signal for the home. signal, a track-circuit including a relay "and source ofalternating current for controlling each signal, and means for changing the phase of alternating current in one trackcircuit by the other track-circ roo stem; 1 as pf eifilgrrility of signals, e treck-ciim'iit and of a. home and distant signal located at theg- :rei same point, a single track-circuit and two renifljls; 9d means for supplying alternating lays for controlling the home and distant sig-f currents of differen phase relation to said nals, a source of alternating current for said mink-Circuit to control the signals at differtrack-cirouit to which one ofsaidrelays is ent tinis. responsive to operate one of said relays and 4. In a signaling system, the combination;

In testixhony whereof I have hereunto set not the other, and a second source of current my hand. for said track-circuit of different hase relc- JACOB B. STRUBLE. tion and to which the other ofseidre'lays is Witnesses:

DARWIN S. WoLooTT,

responsive. t

F. E. GAITHER.

5. In a'sig'naling'system, the combinatmn device for controlling both of said sig-

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