US1653368A - Railway-traffic-controlling apparatus - Google Patents

Description

Dec. 20, 1927. 1,653,368

R. A. MOCANN RAILWAY TRAFFIC CONTROLLING APPARATUS Filed Feb- 1924 INVENTOR lQ-Q: WW

Patented Dec. 20, 1927.

' UNITED: STATES I PATENT RONALD A; McoaNN; 0F SWISSVALE, PENNSYLVALTIIA; ASSIGNQR To THE UNION swmorr- 8c'SIGNAL COMPANY, 101* swIssv-ALE, EN SYLVANIA, ,A CORPORATION 0F PENNSYLVANIA;

RAiLWAY-TRAFFIC-CONTROLLING .arrniin'rnsl Application filed February My invention relates to" railway traffic controlling apparatus, and partici ilarly to apparatus of the type, comprising train carried governing means controlledby energy received from the traekWay More p'articu-- larly, my invention relates to the trackW-ay matic View showing one form or traclnyay apparatus embodying. 11'1yinvention,'

Referring to this drawing, the reference characters 1 and 1 designate the track: ails oi? a railway over which trafiic normally moves in the direction indicated by the .arrow. These railsare divided, by means oi insulated joints 2, into a plurality of sucf cessive track sections AflB, B-C, C-D, DE, EF, etc. Each such tracksection' is provided With a track battery designated by the reference character Q with an exponent corresponding to the location and connected across the rails adjacent the eXitfend 0t thesect-ion. A resistance 16lis interposed between each track battery Q andone rail 1* ofthe corresponding section in the usual Each track section is also provided with a track relay designated by the reference character R with an appropriate exponent and connected acrossthe rails adjacent the entrance end of the correspondingsection. Eachtrack rclayR is responsiveto current supplied thereto fronrthe track batteryQ, located at the opposite end of the corresponding section.

Traflic overthe stretch of trackshown in v the drawing is controlledby Wayside sig- .nals designated by the reference characters S with suitable exponents and located at intervals along the trackWay. Each of the signals Smay be ofanysuitable form and as here shown isof the; semaphore type, and each such signal is capable of giving a stop? and a proceedv indication. I

Associated' -ith each of the trackfrelays except relays R? and R is an auxiliary relay designated by the. reference character 6, 1924. Serial No; 690,934. I

G With a suitable distinguishing exponent.

Signals S and S are controlled overa circuit which may be traced from oneter minal .O of a-suitable source of energy not shown in the drawing, through front con tact 17 of track relay'R Wire 18 front con tact 19 of track relayvR wire 20, Winding of' relay G ;wi1-e 21, front contact-2Q of track relay R Wire'23, Winding of relay,

G Wire 24, operating mechanism o'fsignal S Wire 25, front contact 26, of track'relay R wire 27 ,"o'perating}mechanism of signal S ire 28', back con'tact'29 of track relay R and wircs iiO and X back tothe otherterminal P of the energy source. It is thereforeplain' that it relays R R R and 'R 'are energized, the relay 1 is deenergized, the operating circuit for signals S and .S is closed, thus-causing these signals to display proceed indications. At the same time relays G and G are energized, it bemg noted that the latter relaysare includ ed in series" with" the operating mechanism 01 signals S and S The circuit just traced isprovided with a branehwhich passes from Wire 25, through backcontact 26 of track relay. R Wire 31, to common ire X. "It is therefore cleantha't When'r'elayR isde energiZedsignal S is 'de-energized bnt sigm1 S still indicates proceed and relays G and are still" energized over backcontact- 26 of relay .Another branch 1s provided which may be traced from wjneQI,

through back contactQtZ of track relay R and'w'ire' 32 to wire If relay It is deenergized, curator-e, and relays R and'R' are"bo'tlifenergized, signals S and. S will.

both indicate stop, relay G will be'de-enen gized, and relay G fWill-be energizedl i The controlIof'signalsS and S and relays G aiid G will be readily understood from the foregoing.

Each track section is provided wvith'a "track transformeddesignated by the refer ence, character Kfwi'th an exponent'correspondmg to the location and having its secondary, Winding 14: nter-posed between the associatedtrack"battery Q and onerail of the corresponding section. An impedance 15. 1s nterposed between the secondary winding 14: of eaclrtrac'k' transformer K so i and one rail 1 of the corresponding section in the usual manner.

Associated with each track section is a line transformer designated by the reference character T with a distinguishing exponent. The primary winding 8 of each such .lin-e transformer is constantly supplied with alternating current from some suitable source of energy such as an alternator H over line wires 3 and 3.

Track transformer K is at times energized over a circuit which passes from secondary 9 of line transformer T through wire 33, primary winding 13 of tracktransformer K wire 34, front contact 35 of track relay R and wire 36 back to secondary 9 of line transformer T Track section BC is therefore supplied with alternating track circuit current bytrack transformer former K K when relay R is energized. The supply of alternating track circuit current to sec tion 19-]? is controlled by track relay R in the same manner as that just described for section BC. I

Track transformer K is provided with a circuit which passes from secondary 9 of line transformer T through wire 37, back contact 38 of auxiliary relay G wire 39, primary 13 of track transformer K wire 40, back contact 41 or relay G and wires 42 and 43 back to secondary 9 of line transformer T. This circuit is closed only when relay G is deenergized, under which condition section CD is supplied with alternating track circuit current of one relative polarity, which I will term reverse relative polarity. When relay G is energized current flows from secondary 9 of transformed T through wire 37, front contact 41 of relay G wire 40, primary 13 of transformer K wire 39, front contact 38 of relay G and wire 43 back to secondary 9 of transformer T then this circuit is closed alternating track circuit current of the other relative polarity, which I will hereinafter term normal relative polarity, is supplied to section C-D from trans- The partial sections immediately to the left of point A and immediately to the right of point F are supplied with alternating track circuit current in the same manner as section CD.

When relay G is energized current flows from secondary 9 of transformer T through wire44, primary 13 of transformer K wire 45, front contact 46 of relay G and wire 47 back to secondary 9 of transformer T WVhen th s circuit is closed alternating track circuit current of normal relative polarity issupplied to section DE by transformer K Transformer K is controlled in the same manner as transformer K Means are also provided for supplying the rails of each section in parallel with an alternating current which I will hereinafter term a local current. For this purpose I provide each section w1th an impedance 4 connected across the rails ad acent the entrance end of the section, and a similar improvided also with two impedances (rand 6 connected across the rails at an intermediate point in the section. Local current is supplied by local transformers designated by the reference characters L with appropriate exponents. 'Iheprimary 10 of each local transformer I; is constantly supplied with alternatingcurrent from the secondary 9 of an associated line transformer T. Sec tion B-C is constantly supplied with local current from a circuit which may be traced J: 7 I irom secondary 12 oflocal transformer L through wire 49, impedance 4 in section BC, through both rails of the section in parallel to impedance 7, and wire 50 back to secondary 12 of transformer L Section E-F is provided with a local circuit similar to that just described for section BC.

Section C-D is provided with one local circuit which passes from'secondary 11 of local transformer L through wire 51, impedance 4 i1rsection'CD, through both rails of the section in parallel to impedance 5, and wire 52 back to secondary 11 of transformer L Another local circuit is provided for this section over which current fiowsfrom secondary 12 of transformer L through wire 53, impedance 6 in section CD, through both rails of the section in parallel to impedance 7, wire 54, front contact 55 of relay G and wire 56 back to secondary 12 of transformer L. It is therefore obvious that section C--D is constantly supplied with local current between impedances 4 and 5, and is supplied with local current between impedances 6 and 7 when relay G is energized but not when the relay is de-energized. T he .local circuits for the partial section to the left of point A and the partial section to the right of point I are similar to the local circuits for section CD. The local circuit for section Dlil may be traced from the secondary .11 of transformer L, through wire 57, impedance 4 in section DE, through both rails of the section in parallel to impedance 7, through wire 58, front contact59 of relay G ,'and wire 60 back to secondary 11 of. transformer L Section I) E is thereforesupplied with local current only when relay Gr" is energized. The supply of local current to section AB is controlled by relay G in the samemanner as thesupply of local current to section D--E by relay G Before explaining the operation of this apparatus as a whole it should be pointed relay R out that the trackway apparatus herein shown and described is suitable-tor co-operation with train carried governing means in the following inannerz' When a, train occupies a portion of track which is supplied with local current and with track circuit current of normal relative polarity, a pro-v ceed indication ,is-received on the train; when the tra n occupies a stretch of track which is supplied withflocal current and with track circuit current the relative pos lar ty of either of wh ch currents is reversed,

a caution,i'ndication is received on the train;

and whenthe train is on a portionof track from which the sup'plyof either local. cure rent or track circuit current is discontinued v a stop indication is received on the train;

As shown in thefdrawing the parts of the appa 'atus alloccupy their normal posi- 'tions, that is, the positions corresponding to an unoccupied,condition on the track. In this condition each of the track relaysR is energized, each otthe signals S indicates stop, and each of the relays G is de-energized. i v

I will now assume that a train moving in the direction of the arrow passes through the stretch of track shown in the drawing.

As the train enters section B-C, the deenergization of track relay R closes the circuit forsignals SCand' S and these signals therefore indicate proceed, fAtthe same time, of course", relays G and G are energized. Section B -C is supplied constantly with local current, and relay R being energized, thissection is also supplied vvitlrtrack circuit current of normal relat ve polarity.

The train therefore receivesja proceed indication as it proceeds through section B'C. hen thetrain passes signal S the de-energization Of relay R closes the branch through wire 31 for signal and "relays G and G, but signal S now indicates stop. Since relay G is energized, track circuit 1 current oi? normal relativepolarity is supplied to section C D and local current supplied tothis sect on between impedances (i and 7 over. Tll'OllllCOIlttLCt 55 ot relay G.

The train therefore receives a prec ed indication throughout section C:D.. 'A the train enters section D E relay R isdeenergized, thus interrupting the circuit for relay G and signal S Signal S there fore displays a stop indication, Relay G however, is still energized over back contact Track circuitjcurrent of normal relative polarity is therefore sup (ill plied to section D E transformei K and local current is supplied to this section by secondary 11 of transformer LP. The

train therefore receives a proceedindicationi throughout section DElf "Section is also suppliedwith track, circnitcurrent' of normal relative polarity and with local current, and the train therefore receives a y proceed indication throughout sect-ion EF.

' I will now} assume that a train, moving in the directionof the arrow, proceeds into vsection C;D and stops, and that a following train enters section B- G. Due to the presence hot: the first train in section CD', relay R is de-energized and, signal S is at stop. The circuit for the primary of transformer; K is therefore open, and the second train, being deprived of track circuit current, receives a stop indication throughout section B-C. "If the second train enters the 'occupicchsection, track circuit current from transformer K will be shunted from such second train by the wheels and axles ,of'the train already occupying section G"D and the following train will continue to receive a stop indication.

If a train occuies section DE Sl HHlS S and S will indicate stop, and relay G willbe de-energized. Relay R will be deenergized and relay R energized. Under these conditions section BC is supplied with track circuit current of normal relative polarity and also with local current. Track circuit current of reverse relative polarity is suppliedto section CD- throughout its 'lengtlrand local current is suppliedto section C'D between 1l11p8CllIlCS4 and 5 but notbetween impedances- 6 and 7. It, now a tollowing' train proceeds pastpoint B, such train will receive a proceed indication between points 13 and C, a caution indication between pointC and impedance 5 in section C-D, but will receive astop indication between impedance 6 and point D. The train will also receive a stop indication, as previously'explained, if it proceeds into the occupied section DE.'

It" section E F is occupied, relays R and G will both be tie-energized. The sup ply of train governing currentto sections 1 13 C and ,C D is the same explained in connection with a train occupying section D. E but the supply of both local current and track circuit-current to section D- E is nowinterrupted. A train moving toward the scope of the appended c aims without departing fronithe spirit and scope of my invention.

Having thus dcscribed'my, invention, what I'cla'iniis: p p

1. Railway traffic controlling apparatus comprising a stretch of railway track, a sig the right receives a. proceed indication nal for said stretch, a relay,n1eans controlled by said relay for supplying said stretch with periodic energy for the control of train-carried governing means, and integral means for controlling said signaland said relay. 2. Railway traflic controlling apparatus comprising a stretch of railway track, a signal for said stretch, a relay, means controlled by said relay for supplying said stretch with periodic energy for the control of train-carried governing means, and integral means for controlling said signal and said relay in accordance with traffic conditions. i

3. Railway trallic controlling apparatus comprising a stretch ol railway track, a signal for said stretch capable, oi? displaying at least two different indications, a relay, in-

tegral means for controlling said relay and I said signal in accordance with trafiic conditions, and means controlled by said relay for supplying said stretch with periodic energy for the control of train-carried governing means when the signal is displaying one indica-tion but not when the signal displays a different indication.

4. Railway tr'athc controlling apparatus comprising a stretch of railway track, a signal for said stretch, a. relay, an operating circuit for said signal including a winding of said relay, and means controlled by said relay for supplying energy to saidstretch for the control of train-carried governing means.

5. Railway trailic cont-rolling apparatus comprising a stretch of railway track, a signal for said stretch, a relay. an operating circuit for said signal includinga winding of said relay and controlledby traflic conditions, and means controlled by said relay for supplying current to said stretch for the control of train-carried governing means.

6. Railway trattic controlling apparatus comprising a stretch of railway track, a signal for said stretch, a relay, an operating circuit-:lior said signal including a winding of said relay and controlled by traffic conditions in rear oi said stretch, and means controlled by said relay tor supplying current to said sti etch.

7. Railway traliic controlling apparatus comprising a stretch of railway track, a signal for said stretch, a relay, an operating nal for said stretch, a relay, an operating circuit for said signal including a winding, of said relay, and a local circuit for said stretch controlled by said relay for the con trol of train-carried governing means.

9. Railway trafiic controlling apparatus comprising a stretch of railway track, a sig-- nal for said stretch, a relay, an operating comprising a stretch of railway track and train carried governing means responsive to current flowing insaid stretclnthe combinationwith the atore-mentioned instrumentalities of a trackway signal, a relay, an operating circuit for said signal including a winding of said relay and controlled by trafiic conditions, and meanscontrolled by said relay for supplying such current to said stretch. I V

11. Railway tra'l'lic controlling apparatus comprising a stretch of railway track, a signal for said stretch, a relay, an operating circuit for said signal including a winding of said relay, and means controlled by said relay for supplying said stretcliwith track circuit current of one relative polarity or the other. 7

12. Railway trafiic controlling apparatus comprising a stretch of railway track, a signal for said stretch a relay, an operating circuit for said signal including a winding of said relay, and means controlled by said relay for supplying said stretch with track circuiteurrent of one relative polarity or the other, and for at times also supplying said stretch with local current.

13. Railway traffic controlling apparatus comprising a stretch of railway track, a signal for said stretch, a relay, an operating circuit for said signal including a winding of said relay, and means controlled by said relay for at'times supplying said stretch with local current and with track circuit current of one relative polarity and for at other times supplying the stretch only with track circuit current of the other relative polarity.

14. Railway traflic controlling apparatus comprising a stretch of railway track, a signal for said stretch, a relay, an operating circuit for said signal including a winding of said relay, and means controlled by said relay 'lor attimes supplying said stretch with local current and with track circuit current and for at other times supplying said stretch lit) nal for said stretclna relay, an operating circult for said signalincluding awnidingof said relay, an'duneans controlled by said re lay for supplying said stretch with track Cli'CLlli? current of one relative, polarity orthe other throughout the length oithe stretch" and for at times supplying local current to a po'rtion'only ofsaid str (ch. l

17, Railway traflic controlling ap 'iai'tith's comprising a stretch of railway track, a signal for said stretch norn'ially stop indication, an. operating crr'cuit effective when energized to 'causelsaidsignalto di play a proceed indication, a'ielay included in said circuit, means 'fo'rienerg inng said circuit when a train approaches the signal, and means controlled by sa d relay for supply ng current to said stretch.

18. Railway traliic controlling' apparatus comprising a'stret'c'h oi railway track, a signal for saidstretch arranged to at times display'a stopj'indication, "an operating cir cuit effective when energized to cause said signalto display a proceed indication, a re lay included insaidfci'rcuit, means for energizing said circuit when a train approaches the signal, means for subsequently maintain iiig said circuit in its energized condition until the trainpasses the signal, and means controlled by said relay for supplying periodic energy to the tr'ackwayfln rearfol said signal;

19. Railway trailic controlliiigapparatus comprising a stretch of railway"traclga signal "for said stretch, an operating circuit for said signal arrang'ed tobe energized when a I train approachessaid two relays each having a windingincluded n said "circuit,

1neans controlled by one such relay'for supcom risin a stretch of railwa 1 track a. si

nal for said. stretch; an. operating circuit for said signal arranged. to be energized. when a train. approaches said signal, two relays each having a winding included in said circuit, and means controlled by said two relaysfor supplying alternating current to the trackway. i

22. Railway traflic controlling apparatus comprising a stretch of railway track, a signal for said stretch, an operating c1rcu1t for I said signal arranged tovbe energized when a train approaches said signal, two relays'each displaying a having a winding: included in said circuit,

cal current. I l

23. Railway traflic, controlling apparatus comprising astretch of rail'way'tr'ack, a s1gsi'ipplying thetrackw'ay with alternating 10- mil forsaidstretch, an operating'circuit for said signal arranged to be energized when a train approaches said signal, tworelays each having winding included in said circuit, means controlled by o'nefsaid relay for supplying alternating current to a portion of the 'trackway and means controlled by the other said relay for supplying alternating current to adifi'e'rent portion of the track- 'y in a a 2 LRailwaytraffic controlling apparatus comprising af'stretch of railway track, a sig-[ nali'or said stretch, an operating 'ClICIllt for said signal arrangedto be energized when a train approaches said signal, two rela seach having a winding included in said circuit, means controlled by one said relay for supplying a portion of the trackway with track circuit current and 'withlocal current, and

means controlled bythe other said relay for supplying track circuit current andloca-l current to a different portion of said track- Wfliy. j g

' 25. Railway traff c controlling apparatus comprising a section of railway track, a 1 source of direct current connected with the rails of sald section, a track relayconnected with the rails of said section and responsive to current from saia source, atrackwa y signal, an operating circuit for said signal controlled in part by said't-rack relay, an auxiliary relay having a e winding included in said circuit, means for energizing said circuit when a train approaches said signal, and means controlled by said auxiliary relay for supplying said section with alternating current. a

26. Railway traflic controlling apparatus comprising a stretch of railway track, a sig-.

nal for said stretch, a relay, an electrical circuit including the operating mechanism of said signal and a winding of said relay in series,-means for closing said circuit when a train approachessaid signal and means controlled by said relay for supplying said and m'eans'controlled by said tworelays for i ioo I ll) ll5 I stretch with alternating current for the c0ntrol of train-carried governing means,

27. Railway traflic controlling apparatus comprising a stretch ofrailway track, a sig- "nal for said stretch normally indicating'stop,

a relay, an operating circuit arranged to be closed when a. train approachessaid signal and including a WlDCllIlgOf sa d relay, and

means controlled bysaid relay for supplying periodic energy to said stretch for the control of train-carried governing means.

28. In combination, a stretchof railway track, asignal for said stretch normally indicating stop but arranged to indlcate proceed when a train approaches the signal, and means for supplying said section with track circuit current for the control of t'ain-carried governing means when said signal in dicates proceed but for at times discontinuing such supply when said signal indicates stop. 7

29. In combination, a stretch of track, a direct current trackcirc-uit for said stretch, a signal normally indicating stop, means controlled in part by said track circuit for causing said signal to display a proceed indication when a train approaches said signal, and means controlled in accordance with the indication displayed by said signal for supplying alternating current to said stretch for the control of train-carried governing means. 30. In combination, a stretch of track, a direct current track circuiti'orsaid stretch, a signal normally indicating stop, means controlled in part by said track circuit for causing said signal to display aproceed in dication when atrain approaches said signal, and means for supplying alternating currentof one relative polarity or the other to said stretch in accordance with the indi cation displayed by saidsignal.

31. In combination, a stretch of track, a direct'current track circuit for said stretch, a signal normally indicating stop, means controlled in part by said track circuit for causing said signal to display a proceed in dication when a train approaches said sig nal, and means for applying across the rails of-said stretch an alternating electron iotiye force of one relativepolarity, or the other according as said signal displays a stop or a proceed indication.

32. In combination, a section of railway track, a source of local current normally disconnected from said section, andmeans controlled by a train approaching said section and also by a train occupying said section for supplying the two rails in multiple of Said section with local current from said source.

33. In combination, a section of railway track, a source of local current normally disconnected trom said section, and means responsive to trafiic conditions in advance and controlled by a train approaching said section and also by a train occupyingsaid section for supplying the two rails of said sec tion in multiple with local current from said source.

34. In combination, a stretch of railway track, a signal for said stretch normally indicating stop, an operating circuit for cans-- ing said signal to indicate proceed and arranged to be closed when a train approaches the signal, and means associated with said circuit for controlling the supply of local and track-circuit current to said stretch.

35. In combination, a section of railway track, a normally open circuit for supplying local current to the two rails of said section in parallel, and means controlled by a train approaching said section for completing said circuit. g

. In combination, a stretch of railway track, asource of alternating current norinally disconnected from said stretch, and means controlled by traffic conditions in advance for supplying the rails out the stretch with tratlic controlling current of one relative polarity or the other from said source when a train approaches said stretch.

In testimony whereof I atfix my si nature.

RONALD A. Mooixnn.

Images