US1082956A - Automatic control system for electric railways. - Google Patents

Description

B. F. HUTGHBS, JHK. AUTOMATIC CONTROL SYSTEM POR ELECTRIC RAILWAYS.

f 4 APPLoATIoNHLBDrEBJ,1912.

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UNITED STATES PATENT ernten'.

SENJAMIN. -H-UTclins, Jin., ornnnENiJALE, N'EWJERSEY.

.Je .it kwh mmm @d 'Siete 0f; New ,Je have ,invented en Iilflprovedy Animati@ @rit-rol System .for Elearie lRe i'i 1,v etys @if bien .the fuowin'g is This '1 1 entree @if 1z0 a :n@v1 .zsysfem fer contrcllingelect 1ly prcpelled cars and trains in Such a' Iinertliat collisins are eiectiyely preventedjvithont the use of any signal er Other add4 ional Wires,

'filesystem is merePi't-iciilarlydsend' te protect single trackfrailways having a be readily adptedtq ether purposes.-

j The syster1i1 lis that if a ca`,r hasA arriyed una switch and thereis no clear track ahead, the electric current is autxriatically cut off from the switch until said track has been cleared.

In theaecompanying drawing: Figure 1 is a diagram` shwingrmyimprcved automatic control system applied to ,a trackseeton having three' switches; Fig. 2 is a diagram f nevof the circuit changersgFig. 3 a similar View thereof, shwing the parts in a differentfpostin, andFig.4 l a diagram showing the additional resistance contained in the cars, 4

The track is shown to comprise the single track sections 10, 11, 12,V 13 which are, conrled by Switcher. 14,15, 16 respectively, the rails of all sections gbeing' conductiyely connected vin suitable. -xnfar'iner. Tle corre,-v

spndingly arranged trlley Wire or third i rail cc- rnprisesthesingle sections 17, 18,v 19,

and the dcilble r twintsecticns, 21, 2 2, 2 3, thesingle sectiens beinginsulated freni the dcnble sections as at 211.4 The insulating points are arranged Within the duble Wire sections in close proximity to their ccnneeting points with the single Wiresecticns, s that. each single wireterminatesin a 4foi'rk asclearlylliiSild I Fig.-` 1 At elhf the s witche sf .there ,is arranged a` circuit changer Whh ,lOntrols the admissicn `of electric current inte ,the trqlleywires ci theJ` wire 23 Whileasuitable seni-ce lef electricity 29 is by wires 30, lconected to Atrack'section 10 and feed wire 28 respectively.

siiiiietii f ttiersfratent. ajiiii'eaii tied February 7, 1ere. Serri-l 1ro. :676,003.

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mary Winding of electromagnet 33 is by Wire 45 connected toA acontact 46 'andby Wire 47 to thebifurcatedend ofthe single trolley Wire leading-toward the left, say to wire 18. the 'primary windings 48, 499i lectioiiie'gnts 34, ,35 which are GQ111- nected in parallel, a wire 50 leads to both trolley Wires of the switchgsay t0 Wires 15, While a Wirel cennects said windings with a, sentirci-pim O'rgfbridge 52 mounted 0n armature 3 6 and inslated therefrqi: as at ing the dr wiring frcmlbei'ngpbscnred by Showing lsiltill between armftl. ,3Q-arid Wire 51. Wlienyarmatulref is t0- ward the left. (Fig. 2), 1t condnctiyely conllectsthe contacts 42, 46, while when it is swung toward the ri'git (I-"ig-` 3) it @Onduf tively connects dpairgof contacts 54,` 55.

cette?, @new is, wife or come@ 4 56 connectedtcfwire Sand Contact 55 is by wir@ 5,7 @Generated te Mini-,47, A11E4 ef the primary windings "and wires or Jc onducters above l mentioned b e, o f dimen- LSihS as @readily Permlt the? Passage f the electric Gliirntnecessiary fer operatingthe carsr trains that 4pass the track section high resistance winding, yelectroinag'net 32 being provided with a secondary winding 58, one end of which is connected to wire 43, while its other end is by wire 59 connected to a conductor 60 that connects armature 38 and spring 39 with armature 36. The secondary Winding 61 is with one end connected Ato wire 47 while its other end is by wire 62 connected to conductor 60. The secondary windings 63, 64 of electromagnets 34, 35 are connected in series, the freev end of winding 63 being connected to wire 50, while the free end of winding 64 is by wire 65 connected to a contact 66 adapted to be engaged by armature 38 when electromagnets 32, 33 are denergized.

Before explaining the various circuits in detail, it may be stated in general elucidation of the device that when a car travels along a single track section of the line, current is supplied to the corresponding trolleywire section through the circuit' changers arranged at the trackswitches that Hank said single track section. So for instance if a car 67 travels along track section 12 in the direction of arrow a (Fig. l), the armatures 36 of circuit changers A2 A3 are swung toward the left (by reasons hereinafter more fully explained). Part ofthe current necessary for operating car 67 flows from feed wire 28 through branch 26, armature 36 of circuit changer A2, contact 42, wire-11, winding 40 of electromagnet 32 and wire 43 to trolley wire 19, while the other part of the current is supplied to wire 19 through branch 27, armature 36 of circuit changer As, contact- 46, wire 45, winding 44 of electromagnetr33, and wire 47 all of circuit changer A3. In order to maintain the armatures 36 in their proper positions, even if the controller 68 of the car is turned to out ofi the motor current, an additional comparativelyhigh resistance 69 is interpolated between the conductors 70, 71 leading from the controller tothe wheels and trolley respectively. -In this way a small current will continuously flow through electromaguets 32, 33 of. circuit changers A2 A1 respectively, as long as a car passes track section 12, so that the position of the armatures 36 is rendered independent of the position of the controller handle.

Fig. 1 further shows a car 72 passing switch 14 in the direction of arrow b. This car is free ,to4 proceed and meet car 67 in switch 15 and receives its operative current,I

from the circuit changers of the switch 15 and of the switch located to the left of switch 14, the last named switch being not shownin the drawing.v Part of the current for operating car 72 flows from branch 26 through the armature 36`of circuit changer A1, contact 46, wire 45, Winding 44, wire 47,

trolley wire 18,v wire 43 'of circuit changer A1, wire 56, Contact 54, bridge 52 of the armature 36 lof circuit changer A1 which is thus free to proceed from switch 14 toward n switch 15. As soon -as the trolley 73 of car 72 leaves wire 21, the current which previously fiowed from contacts 54, 55 of circuit changer A1 through bridge 52, wire A51, `windings 48', 49 and wire 50 is interrupted, so that electromagnets 34, 35 become denergized and their armature 36 is liberated. Then trolley 7 3 engages wire 18 a current will flow from feed wire 28 through branch 25, conduit 60 of circuit changer A1, wire 59, winding 58 of electromagnet` 32, wire v 43 to trolley wire18, so that electromagnet 32 is energized to attract armature 36 of circuit changer A1. Thus 'a' motor circuit is established for car 72, the current iowing through branch 25, armature 36 of circuit changer A1, contact 42, wire 41, winding 40 of electromagnet 32, and wire 43 to trolley wire 18. As now the armatures 36 of bot-h circuit changers A1 and A1 are swung toward the left, current will be supplied to trolley wire 18 from both of said circuit changers as above described, so that f -car 72 is free to proceed toward switch l5.

Since car 67 is located closer to switch 15 than car 72, car 67 will reach said switch earlier than car 72. As soon as the car 67 enters with its trolley- 74 the trolley wire 22, the current supply toits motoris discontinued, so that it cannot proceed until car 72 has also reached the switch, `where upon current is automatically supplied to trolley wire 22, so that both cars may proceed. It is obvious from Fig. 1 that when car 67 has reached switch 15, while car 72 appreaches the latter on track 11, the armature 36 of circuit closer A2 will remaln swung toward the left owing to the current' not be swung toward contacts S54, 55 so that no current can be supplied to trolley wires 22 and car 67 is thus unable to proceed. As soon as car 72 also enters Aswitch 15, the armature 36 of circuit changer A2 will be swung'toward the right for thefollowing reason: As car 72 leaves the track 11 and trolley wire 18, the flow of current through electromagnet 33 will be interrupted so that both armatures 36 and 38 of circuit changer A.2 are released therefrom. Armature 38 willthus engage Contact Gttlierebyclosin'g' a circuit, the current otwlich tlowsgroin feedl -wi-'reQS through branch `26", conductor 6o, of circuit .Changer A2, springt 39, armeture 38, contacto@ wire 65, winding4 64, 63 of `electroniagmts i 35, 34:, wire 50, and' cars 6T, 7 2 to` the track rails. Electromagnets 35,3j are thusenergized to attract armatare- 36 and thereby throw` bridge 52l against ,contacts `54, ofcicitl changer As this positionof the cars, the armaturesy ,36 of .circuit changera` A1, A?" 2 are i swung tof ward the left, cnrrentjyvill thus beisppl'ied to trolley 22r from .both ,said, j, circuit changers in a manner analogousk tic-that des j scribed inconnection with switch-*1 4 and can then,V loca-ted in` said' switch; In ad dition to thus supplying electric current' to" trolleyfwires 22', the trolley wircsnh, 23 ci Ithe switches are simultaneousl'ycato iffrorn feed wire 28 so that nocars could leave the flankingy switches before cars (i7, 7,2 have entered `the samer, lltwill Seen that `when armature 36 of Ciliitchanger will bei established, the currents-'of which How, thronglr electromagnets 32'. and 33 of circuitl changers "A1, A3: respectively, As

-thus the annature- 38ofsaid circitchang switch. The `car located inthe latter is thns unable to proceeduntil .theothen car has also entered the swtchywhereiipon electric cr'rent' supplied-' to the `switch ,trolley wires, so that both cars areable toproceed. In this way effective mea-ns are provided for preventing head-on collisionswithout4 the employment ofany signal wires betweentlie several track sections, the only wire used being the feed wire fcrthev trolley vwire or third raiLl For thenrpfose of theannexed claims, `a',third rail iscbv-iously toibo cdlisidered as an equivalent of the ltrolley wire forming-,an element of said claims.

I claim:

elect-ricrailways, ast-rack composed of a fp A1. In an` automatic l control system rality ofsingle track 'sections 'and intermefA diate switches, conductively connected thereto, aV single trolley, c wire section -for each single track section, Aa twmlr trolley WireI section for eachjpswitch, thewires 'ofy each twinl trolley wif-ric section-.being miitually connected andfins'iilated `fromwthe adjacent singletrolley` wire' sections,'. a feeder, and means vprovided for each switch V'n ecting said feeder to a selectednumber of trolley wire-, sections, said controlling carcircuit' being `established intermediate the switches by meansj of the connecting single s automa-tic control system for electric railways, a track composed of a plurality of singlet-rack sections and intertrolle` wire sect-ions,

-m'ediafte' switches conductively connected "theretojasingle trolley. wiresection for each 'singletrack-section, a twin trolle 'wire sec-V tion for each switch, thewires' oeach twin trolley wire section: being mutuall 'connected and'insulated from the a jacent single trollo` wire sections, a feeder', and circuit. `cluaiigcrs located in proximity to the switches. andi controlled by the'car-circuits for connecting said feeder to a selected number of trolley Wire sections, said circuit changer-controlling' carcircuits being establishedintjermediate the switches by means ofthe" resp Ftive connecting single trolley wirev sections, j,

4511i en ;antoniatic control system-for v electric railweys,` a track composed of a pliirality of single track sections and interrswift-ches conductively connected thereto,'asingle trolley wire sect-ionl for section` or :each-t switch, the `vsriresof 4each twin-` trolleyA v,wi-re 1 sectionl mutually connected and insulated from e adjacent Siiie1eftr11ca wine sentient e feeder, and'` a circuit diafgerleceted 1h, preximww each switchaiid .controlling cciinection between trolleywiresections adjacent to said switch lilll@Iv Wires. A. f,

fn an automatic c OIitijol system foij elc- @cauces-asing1eecasectien and a pair of Vsci itclies-'condoc tively' ,connectedi'to the, @lids t thereof, .e` Single trolley Wire for the single track section, ,a pair of mutually connected trolleywires for each switch, said last named wires beinginsulat'ed from the single'trol1ey wire,a feed wire, a circuit .changer loca-cd proximity to` leach switch, and means controlled bysald circuit changers for connecting the feed wire with the (feeders and the trolleyf-` wires of Said Aswitch 'and between the feeder, `and the trolley wires of one switch and for simultaneously disconnecting the feed wire from the trolley wires of the other switch.

6. In an automatic control system for electric railways, a-single track section and a pair of switches conductively connected to the ends thereof, a single trolley wire for the single track section, a pair of mutually connected trolley wires for each switch, said last named wires being insulated from the single trolley wire, and means controlled a car for supplying electric current to the trolley wires of one switch and for simultaneously interrupting the suppl of electric -current to the trolley wires o the other switch.' y

7. In an automatic control system for electric railways, a single track section and a pair of switches conductively connected to the ends thereof, a single trolley wire .for the single track section, a pair of mutually connected trolley Wires for each switch, said last named wires being insulated from the single trolley wire, means controlled by a car located in one switch for supplyin electric current to the trolley wlres o said switch and for simultaneously interrupting the supply of electric current to the trolley Wires of the other switch, and means for interrupting the supply of electric current to the twin trolley wires of the first named for supplying electric current to the trolley wires of the'single track section when the car passes from said first named switch to said single track section.

8. In an automatic control system for electric railways, a track comprising a pair -of sin le track sections, a "central switch interlne iate said singletrack sections and conductively connected thereto, a pair of outer switches conductively connected to the outer ends of said track sections, a single trolley wire section for each single track section, a

. twin trolley wire section for each of said switches, the Wires of each twin trolley wire section being mutually connected and insulated from the single trolley wire sections, an'd means controlled by a car located in the central switch for supplyingV electric current to the trolle wires of said switch and for simultaneous y interrupting the supply of electric current 'to the trolley wires of the flanking switches.

9. In an automatic control system for electric railways, a track comprising a.pair of single track sections, a central switch intermediate said single track sections and conductively connected thereto, a pair of outer switches conductively connected to the outer ends of said track sections, a single trolley wire section for each single track section, a

of single track sections, a central switch intermediate said single track sections` and conductively connected thereto, a pair of outer switches conductively connected to the outer ends of said track sections, a single ltrolley wire section for each lsingle track section, a twin trolley wire section for each of said switches2 the wires of each twin trolley wire section bein-g mutually con-' nected and insulated-fromthe single trolley wire sections, a circuitchanger located in proximity to each switch, a feeder, and means controlled by the circuit changers for connecting the feeder to the twin trolley wires of the central switch and for simulf taneously disconnecting the feeder from the trolley wires of the flanking switches, said circuit changers being also adapted to connect the feeder with both ends ofthe trolley Wire of each single track` section.

BENJAMIN F. HUTCI-IES, JR. Witnesses:

ARTHUR ZUMPE, KATHERYNE KOCH.

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