US1263624A - Railway signaling. - Google Patents

Description

W. W. TALBERT.

RAILWAY SIGNALING. APPLICATlQN FILED JUNE 2. 1913.

Patented Apr. 23, 1918.

' Theaccompanying.drawingis adiagram-L matic viewcshowingi one form of railway.

signalingfernbodying.myinventionb estates: a o.

1 1 t ,u Applicationfilefi lune211913;;SeriaLNoMWLIQQ. H

1 Toalltolwflr'it mag concern:

l aBeit known that'L WILLIAM ma citizen "ofthe United States, residing at .Ch'icago, in thegountyof Cook and State of. Illinois, havejinvented certain new and. u er. f fulllmprovements inlRailway Signaling, of

WILLIAM w; rarnnnrjo'r omaso, init ators, gi-ssrsiron Terrain narrow swirorrcz sIeNAL' clorrrnnr, or, swissv nnn, rnnrrsrrvan n, a oonroiarrrrorr' or rnivir- :EYPVANIA whichthe ifoll'owinglis a specification.

. ,Myinvention relates :to railwaysignaling H and .lparticularly to. signaling for; stretches of single track over. which; trafiie :moves in bothg'directions.

I: will cles'crlbe one naling embodying my invention and will Midi track:isxdivided into successive sections of which three 'SQCtIOIIS and C are; shown. A As ihere. shown, f'tlleilllnlts of-these 1 sections then point out theanovelLifeatures]. thereof in claims; A

TAL E T,

' RA W sie iem Ts' je ifi afi f te te l 'e y l Patented Apr; as, ars.

is moving jbetween the horizontal and. in.

clined positions anjdvice yersa andathircl CllCLIllJ\COIllZlOllGI" 11 which is closed only f when thexsignal is in the stopflposition;

Signal'S operate-s a pole changer 13. -LYSignalS is controlled byja polarized. line, relay :5, and .signalfi is controlled by a polarized linerelay .6, ,Signals S and S are controlledrespectively by line relays 7 and r 8 which, however, as, hereqshown are ,The ircuit for the inclined or, proceed yWitlL caution. position of signalslis from nate'the track rails of alirailway' track,*-which:

are determined by insulated 'jointsfil in both .ofithe linesof track rails jbut it is 1111-. "derstood that' the limits of thersections. may "be d e'fined in other ways Eachiof these-. track: sections is provided with a* track Oil: cuit comprising; as usuah a batt ry. th trackrai'lsof the section, and attack relay.

2 4 l although have hereilr shown only one track circuit for each'sectionA; B,iand C,

it is uiiderstood that any orfall of these sec- 'tions mayg'i'fclesired, be provided with two or nore track'circuits. l a

Trafiic through they stretch in the direct tionl indicated by thearrow is governed by signals. S, S l and St located respectively at the entrance encls' of sections rh B and Gr traflicfin the opposite Cl1I'QCtIO11 through sections Band A is governed by a signal S AS hereshojwn, signals S? and "S are.

each adapted to assume twopOsitions,;hori-L zontal and vertical. ihchcatlng respectively a :7 "ca g n, 1 1 1S, s op and procee anc Shana anc are each adapted to assume threepositions,

horizontal, i di edmnd. vertical, indicating respectively stop, .proceed with caution,?

and;proceecl. I It is!understoodthat these two latter indications are both proceed inclicationsy-the former of the. two 'rneaning that .jtllQ'IlBXt signalor some'other s gnal 111 .advanee lndicates tstop.

controlof signal S are similartojthose just cuitkfor the vertical or proceed? position of this signal is from battery 22 through wire 23 ,icontact 24 Contact. 52, wire 26,-signal S, WlreEZ-to battery 22. The circuit'sfor the traced for signal-S. The circuit for theficon .trolof signal; S is from, battery 68 through ,;.Wire 69-, gcontactl70, wire 71, signal'fiiwire 1 72. .to battery 68. (The circuitfor the control :Of signal S is s'iinilanto that just tracedfor usi'gnal S 1 The circuitfor line relay 5. of signal S is from battery 12 through pole-changer 135 $.w1re 14;,icontact 1'5, w1re 16,..c1rcuit conr troller 9,"wire 17, contact 18', wire 19; re-lay ;5, .wire 203; common wire 50, wire. 5'1,Tpolechanger 13 to battery. 12.. VVhenlrpolechangerl 1S in the position in which "itis .shown in the clrawing,' the positive side of battery 12 isconnected withwires l4 and 17, ianolthe polarity of the current through relay 5 is then such that the polarized arniature 52 of thisrelay is closed sothat signal S. is "in the vertical position indicatiiivgflpmeeed. a Thec-ircuit forlinerelay 6 of signal S. is

from 1 battery 12 through pole-changer 13,

wire 14:, contact 15,. wires 16 and4t9. relay 6, wire 50, common wire '0, wire 51, pole changer 13 to battery 12. .With thepoler changer13 in the' position shown in the .drawing, the polarlty of the current through relay 6 is such that its polarized armature contact is closeclwso that sig'nalS is ilrthe verticaldposition indicating fproceedi? The circuit for line relay 8 of signal S is from battery 29,". through wire 30, contact I, 31, wire 32 bach contact point 33ofrelay X,

wire 34, contact 35, wire 36,relay18, wire 37,.corninon wire. 0 tobattery 29.

is anauxiliaryrelay for the control of signal-S in a manner hereinafter explained.

3 This relay x is pr ovided'with a pick-up it 1 circuit and a fholding""circuit.' The pick-up circuit is from1battery 28,throughwires 38 and 39, back contact point of track relay wigrgized nd tr k layt oi -"section A is -i'or {section A, lwire '41, contact 4230f v 'reny 6, wire 43, relay X, w1res'44 and to battery'28. It will be seen that thislpickup: circuit is closed only when relay 6 1s ene deenergized. The holding circuit for relay of cameras of relay 6, wire 43, relay X, Wi'res'i44 and 45: to battery 28,-"It'w1ll be seen fthatthis holding-circuit is closed only after relay X"h% s beenipic d upand only vvhile1relay 6is deenergized.

The operation of the system is as" follows:

[Assuming firstthat acar or train'passes V I soon, however, as relay 6 has closed, and

"along the track in the direction'indicated by I the arrow; as such car or, train enters track section A it' opens track relay 4 itor'this sec tion, thereby opening the circuit of line I frelay' 8 so that signaljS changes tolf-stop" indication and 5 also 1 op'enin line relay 5 so that signal S 'changes to stop indication. Theopening of track re I layj4 also closes the pick-up circuit of aux} J iliary relay X so that this relay then becomes genergiz'ed. As such car-or train enterstraeksectionBfitopeiis track relay 4 of this sec- I tion, thereby opening at -th is point the eircuit of line relay 8-so that signal S ,con-' ftinues to indicate-stop as longasthe car or train-i occupies track section B. The opening oftrack relay 4 oflsection. B also opens the circuit of line; relay 6 so that signal Sjithen' changes to stop"indieation. This change of signal S" changes circuit controllers :9'and 10 to the position indicated in '1 dashlines andcloses circuit'controller ll.

Theopening of line relay 6-closes the holding circuit for auxiliary relay 'X' so that even afterthe entire car or train has passed Q'llt of the trackasection A this auxiliary re- 1 lay X remains'energizedr The closing of cuit'forline relay 5': from negative side of lci'rcuit eontroller ll and the reversal of circuit controller'lO closes the followin'gcirbattery'28, through"wire 45, circuit "c011 troller'll, wire 53, contact 54 of relay X,

;wi re s"-and17, contact 18,'wire l9, relay 5, "wire-20, common wire 0, wires 50' and 56,

1 circuitcontroller 10, wire 57, to positiveside of battery 28 Thenegative'side of battery Y 28 isnow connected with wire 17 so that the r V j f polarity of the current in relay 5' is such that i I e v "The-ineutral'conta'ct 24of'th1s relay 13, however,- closed, so-that signal S then moves to" the polarized contact 52 of this'relay-is open.

With-caution. j i 1 i H i the caror tr'ain enters track section C,

or the circuit of indicating proceed.

K Assumlng now that a carer train passes along the track in the direction opposite to it opens track relay 4 for that section, thereby deenergizing line relay 7 so that signal S moves to stopposition.

VVhen' the'entire car or train'leaves section B, the closing of track relay 4 of that section closes the, circuit of line relay 6; since however signal S is then in the Vstop position, pole-changer 13 has been reversed so that the negative side of battery is then connected with wire 16, and the polarity of the current in relay 6 is then such that the :olarized armature of this relay is open; the

contact 42 of this relay opens i the holding circuit of auxiliary relay X so that the latter relay opens, and thereby opens at contact 54 the circuit last traced for line. relay 5. As

before circuit controller 9 has been reversed,

-a temporary shunt is closed for the circuit of relay 5 as follows: From negative side of battery- QSthrough wire 45, contact 58 of relay 6, wire 59, circuit controller 9 to wire 17; this shunt keeps relay 5 energized be- "tween thetime thatrel'ay X opens and the time that circuit controller 9 is-reversed. As soon as circuit controller 9 reverses, line relay 5 is disconnected from battery 28 and and'the'consequent opening of auxiliary relay X closes the circuit of line relay 8 so that si nal S then moves to roceed osition.

Since the. circuit of line relay 8-t'or signal S" is controlled by a back contact point of relay X, it will be seen that if this'flrelay X is at any time energized by accident, signal S will be caused to indicate stop.

After the entire car or train has passed outof section G, track relay 4 of this section closes, thereby causing line relay 7 to close,

which in turn causes signal S to chalwe to proceed? position. This movement ot sign'al S reverses-pole-changer 13 to the position 111 which 1t is shown in the drawing so that line relays 6 and 5 are then energized by current of such polarities that their polarized contacts are closed so that signals S and S then change to the'vertical position that indicated by the arrow. When such car or train enters track section C, it opens track relay 4, thereby causing signal S to change to tstopf indication; This movement-of signal S reverses pole-changer 13,

therebycausing signals S ands to change toithe inclinedpositionffor reasonshereinbefore explained. As the car orqtrain enters track-section Bait openstrack relay f4: of: this section, thereby opening thecircuitfor line relay- 8 so that signal S then changes to stop' indication. trackrelayl also openshthe circuit: of line indication. The opening of thistrack relay open neitherthe auxiliary nor the temporary circuit for linerelay is'closed, hence signal S changes to Fstop "indication.

When the entire car or train leaves sectionv C, track relay A of that section closes'so-that signals changesto iproceed indication,

thereby again reversing; pole-changer 13. Y

As the car or train enterssection A, the opening of track relay 4 of this section holds open at this point the circuits for line relays 5 and 8 so that signals S and S continue to indicate stop. 1 y i 1 Y When the entire car or'train has passed out of section B, the closing of track relayA of that section closes the circuit of line relay 6 the polarity of the currentin Whichisthen such that signal S changes to proceed indication. 'Line relay 6" now being closed, 1 and track relay 4- of section A being open,

the pick-up circuit for auxiliary relay X is closed, but the closing of this relay obviously has no effect on signal S becausethe circuit for line relay 5 is held open at track relay 4.

After the entire car or train has left track section A, the closing oftrack relay 4' for.

this section closes the circuits for line relays 5 and 8 so that signals S and S then change to proceed indication and the parts of the apparatus again assume the positions in which they are shown in the drawing.

It will be seen from the foregoing that'as a caror train proceeds along the track in the direction indicated by the arrow, auxiliary relay X is closed while such car or train occupies track section A and remains closed 'as'long as the car or'train occupies track section. B; but while a car or train proceeds along the track in the oppositedirection, the auxiliary-relay X is not closed while such car or train occupies tracksection B; hencep it Wlll be seen that during the movement in the direction indicated by the arrow signal S indicates stop only while the car or train occupies track section A, but that during movement in the opposite direction signal S indicates stop while the car or train occu-- pies either track sections B or A.

Although I have herein shown and described only one formof railway signaling embodying my invention, it is understood that various, changes and modifications may incense The openingfiof. this be madefthereinwithinthe scope of z-theap- I pended claims without departing fromathe spirit; and scope of my-invention. i

Havingthus described my invention, what Iclaimis: p I

1 In combination, va stretch of railway track, two, track sections, trackrelays and sources of current connctedwith the rails of the trackwsectionsg a slgnal for. governing trafiic in one direction through said: sections and adapted to indicate" stopan'd proceed, a circuit for said signal which circuit is controlled by "the: traclcrrelaysxfor bothss0- track relay ofthe second section in advance of the signal,meanscomprising an auxiliary relay for closing said branch, means con- 'tions; fa branchfor said circuit for removing the control of said signal circuit from'the trolled :bythe track relays when operated in a i one sequence by the passage of a car or train through the stretch in the direction in which said signal governs traffic for energizing said auxiliary relay and rendering the remainder of the last mentioned means operative Whereby said signal changes'to proceed when such car or train leaves the first section in advance of thesignal, said means being inoperativei to energizethe auxiliary relay when w the track relays are operated in another sequence by the passage of a car or train through the stretch in the other direction whereby saidsignal is caused to indicate stop while such last-mentioned car or train i occupies either section, a second-signal for governing traflic in the opposite direction through the second section in advance ofthe firstsignal, and acontrolling circuit for 7 saidsecond signal which circuit is controlled by a back contact of said auxiliary relay and by atrack relay for said second section in advance of said first signal.

2-. In combination, a stretch of railway track, two track sections, track relays, and ,l

sources of current connected with'the rails of the sections, an auxiliary "relay, means controlled by said track relays when operated in one sequence by the passage of a car or train through the stretchin one direction; for energizing said auxiliary relay while the a car or train occupies the first of said sections and forholding it energized While the car or train occupies the second sectlon, sald'means being ineffective to energize the auxiliary relay when the track vrelays are operated in another sequence by the passage of a car or train in the other direction until the car or train has passed out of thesaid second section, and-a circuit for controlling said signal which circuit iscontrolled by a back con: tact of said auxiliary relay. 7

3. In combination, a stretch of railway track, two signals located at diflerent points Ction andinto the said firstsection, a signal governing traflic through the said second g section in the said second-mentioned direc 01" igbvming *traflic in the isarne T direction through saidg'stretdnfl signal relayfor each 7 signal, a signal relay "circuit extending V threughuthe stretch and-including said relaysin multiple, Saidcircllit also including Whichftfaffic in the saididirectionleaves the stretch-,itmgrk circuits-for the-stretch includjing' ti'n'ck relays for controlling said signal iqelay-eircuitgan auxiliaiiy source of current 'fiim'ein so'urceef current adj scent the end at 7 means for opening the signal-relay circuit adjacent the forward signal and connecting the said 'auxiliarysource of current With theportion of the circuit extending to the 15 fear from said point;

-eopie nffithisipatelit maiy -be.' obtained for five. cents each; by addressing the fiommissioner of Patents i 3 washi wmn-e. Y

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