US1119620A - Automatic train-stop system. - Google Patents

Description

E. G. MASCARBNHAS.

AUTOMATIC TRAIN STOP SYSTEM, PLICATION FILED JUNE 24,1913.

60. fuif/4 E. G. MASCARENHAS.

AUTOMATIC TRAIN STOP SYSTEMA AAPPLICATION PPLBD UNE 24,1913.

Patented Dc.. 1, 1914,

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6 SHEETS-SHEET 2.

3 W Wis A, Fi A 1M EU v n M k E W ll W0 70 WITNESS/f8 E. G. MSARENHAS. AUTOMATIC TRAIN STOP SYSTEM.

APPLIUATEON FILED JUNE 24, 1913.

-EL Patented Decf 191%,

SHEETSWSEEET 3 E. G. MASCARENHAS.

AUTOMATIC TRATN STOP SYSTEM.

APPLICATION TILBD JUNE 24,1913.

Patented Dec. l, 1914.-.

SHEETS-SHEET 4.

E. G. MASGARENHAS.

AUTOMATIC TRAIN STOP SYSTEM.

APPLICATION FILED JUNE 24,1913.

L ggf Patented Dec. l, 1914.

5 SHEETS-SHEET 5. 71,.

v l 5- f-{nil fla/gif? 8 ,imma/s Til/:a:

showing the stop device releeserl for ille' stopping of the ei-ein; and Fig. e diegreiometio View showingtlie arrangement of loe blocks into which the track is divirlecl,

Referring to Fig'. l' of the drawings, ABB am! C desigiiaie ihr/ee of the olocksirito which e, oracle is cliviclffl, :incl the respective looks have e source or current l eoirieoeerl wit-li the rails a, a', l), of, o, c', eiicl connecte across tlie rails of ezioii. block is e 'relay or equivalent reeeiis that is eorisenly eneru gizeil es loog es e mile is riot in the bloei: to short circuit by its axles lelie source of current l. ll/oen the source of corren?, is shor-oiroiiited she relay 2 becomes deoergizerl so thais the semaphore or other block signal 3 will move to e'nger or horizoeiel position, suoli signal being normally kept ir. clown or clear position by a solenoirl l equivalent means which has one ilermiiel connected by' a wire 5 with e, battery or other source of currena 6 which lies grounded teririiiiel 7 'whereby the circuit completed zo the grounc'ie iermirial 8 of illie solenoid 1i, there being in elle Wire 5 the fixed and movable eonmcts 9 and 10 of the relay. At one euri of each block ere eonteor, rails r and r' which are normally elee3ically connected together oy wires ll. and l2, @nel iiirefl and movable contacts l arial lll, die movelile coriteet' being comiecierl with lieoroovable Contact 10 of die relay 2 so the@ when lie semaphore is in danger position, by reason of ire-io loeliig in the block, the eooiect rails will be disconnected7 so siiet? should aiioiiier train enter alle lilo/oir, alle stop circuit liereof would ls-e so Vimiueneerl the rails if and 7 being disooiinectecl iliel, the eneiririg trein would be erreei/ed, :in the presem iiistarice a. stop leviee is applied to `'alie air brake sysnem so as to eeuse she brakes to set under emergency or abnormal ein conditions, but ia is to loe unrierslsooel lle?, the sie@ device could be applied so throttle of the locomotive when the leiter is steam driven, could be applied lio operi the cireiiiit4 or" the propelling moors in mi electric locomotive. lo the drawings l5 riesigristes the brake pipe in which `is e valve 1 lowing on its seem seoor io which lioseiierl e518 e fie?. ble element time engages ille periphery of' lie seeizor l', ,sind connected with 'iiois elemeii'e l@ ie e Spring other 2O 'wliioi is so more the valve to e. poeiigioi fo*- cefosiog lie brakes lio se. leioli 2l normally engages a iingerfor eqiiiveleiii on alle sector L", this leeii' Carries en armature 23 which is ottieeterl by :in electio-magiiel; 'when the leiter is energized. so *simil the re/lol?. 2l "will be released to permii; ille sector j?. element 19 and spring 2O io operi the relie This elecro-magiiet 2li is ifo e. stop circuit consisting; oli" initie Wires 25, 2o eetl' 2li, here being between the Wires .25

'por

and 26 e, source of current. 12S, and' 'between che Wires 26 and Q7 'e move-.ble and e fixed Contact S29 and 3C of the controlling relay 3l. 'lie'contoots 29 and 30 of die relay 3l are normally seperated so that the stop ci;in cuit; will loe operi, and to effect this result die relay 3l is energized as long as eoiirliions are normal.

The relay circuit is carried `Wholly by the trein 'while iie latter is at any poiii in the block except where the eoitae rails? erifl e ere located, enrl when ille rain is at the Coriisae rails the relay circuit will have e por tion loceerl iii lie israel, and es long as the bloektis @leer and the said track portion of the is intact the relay circuit 'will maineompleteri so that the stop` device will.

flies be ecuetel.' ln Fig. l the circuit the relay 3l is shown closed by tlieelosiiig portion corrieri lo] the tram, suoli closing ion eorisisting of circuit elosers 32 onli 33 and the eonneotiiig wire The mov oole members 35 of lie cirouii: olosers ere electrical@v connected eili the supporting plates or breolreos 36 which ere respectively cormeete oy wires 37 and 38 io the relay 3l, there being iriolude. in one oi" e wires elle battery or einher source of current 33. Tli movable members 85 berry springs which are eclepgecl io eligiiffe the fixed oorieets 35 on eiroui'i; Dreamersi armi it is *zo liese contests 35a alia-ml; elle wire Bilis ooimeeefl. il/lien the perrs ere iii the position shown in Fig. l the eirrerii, passes through e pei-li. consisting of the beitery 39, 'wire S?, relay El. wire 38, circuit oreolrer 33, rriz'e Sil, oir-- cuirJ breaker 32 ami wire 3'?.

The moveble members 35 of elle oirkcuit breakers are iii the form oi: class levers pivorefl 'at #il lo the breelieis 36 ariel the ouer ends'o lhe respective le vers, which, like of mesal rio `form oooclucors, carry! metallic shoes and e2 whieii ere eciupled to enL gege the Contact rails c enel i", :is shojwiiiii 5j so to seperate the contacts' of the circuit breakers 32 and 33. 'When the coritaoi slioes 42 and l2 engage iie rails fr 'anni 7"' the relay 3l lies its circuit coiiipleerl 'by e poriioii irisellerl in the *Lr-.idle said poi'ion consisting of rails o' and 'r'. Wires ll 'will lil and coiibeets lo arirll. so iliot he oomjplete Gironi*n consists of the relay 3l. Wire 38,*rigoib Lreelrei;y 353, right lever ,35, slioe; rail ff-, Wire lLeonteets 13 and lip. wire con'ac: rail fr. shoe 42. left lere left 36, Wire buttery 39 and relay The iiow oi eurreiit-rlirougli liis path con iriiies es loiig es the shoes @wind -il are iii oo oec; Willi the rails o and 'r'. l'liere happens to be e train in the same l'ilocls lie exteisel eircuit of the relay will 'oe operi es shown. iii Fie, e, reason of lie coute e. lneirig sepais' erlirom the contaelwlf l broogii e. out oy the 'rel leari brackets 36, are merle Dwi eviee giie meva'iiiie eeneeei 29 0 31 is pimf'ifiefi, sueii ieeiion cnsiring (if im exeeusion 50 ai e se arranged as to extend under m* engeg iie Lip 5l of ihe eontae 2Q when 'iie @i ne iain is sniicientiy iow. ineens die engineer een eeneinne siewiy into the Mock without abe engine ing i Dipped, n s'ziiis *way unnecessary deiziys are prevented and tiieepeed of 'Lise trein can be qnickiy increased :is soon as the greek ahead is dem'. i

When the Shoes 42 and 'ei-2 sifiife inetiafiis 2' and 'r' n'signai eiicuiJ is Giese/, which circuit includes :i pair eireni' eieseis s and e @init have iieii' zidjiisrlibie ,1s emineeted together by :i wire 533 iie membie centiiefs 5iei'e respec- Lf connected by wire 55 and 5G wiii a er other signai 5T suitably arranged '0 met die attention of the engineer The circuit Ciosei'n s and .5, e, Liegi* with cileili eieeeis :i

,'.*|1 f.=,`u i,"yrfp nime@ nein Lne iiiteez, mi in um @he movable contacts 5&1 of the ei enit cios/ees s :ind e are eairieii by the iev/ers 35 Wine-ii ziiey are insuiaed so that @ne eingegement of the iiees 42 and +22 .V'iiii die mis i and i" wiil perform three functions; ist, the? wiii connect the ieiny Si wih the ion Oi the Circuit instaiied in die meek: second, they will open the circuit eiosers 32 emi 33. and tiiii. iiey Wiii eiese the cireni. eiosers .s eiid s. When the shoes and 2' :ire mit oil engagement with the eentae'; rziiis i' and 7"? iie Circuit cieeeis a)"2 iii be maintained in eine i position, ind eiieiii eiosei'e e and .5" in epe pesiioL 'y Springs 58 or eqiiivaien ineens acting en ,'i'ie levers 35. it may he (iesiiabie to eernpei 'die ,engine to nutonniicaiiy emp et iewei maximum speed when the train eneis :i iieei than is possibie with the Speed responsive efeviee whenV iie min is ieveiing giiiongh he vioei: beyond the eentaet mils li7 and 7. F01" this pui-pose means p1* yid-eci shifting he coniizic 44 in the sinln he bridges die relay 3l. Such siiifing means consists nii an electra-magnet @O which is connected by wires (il and 62 te 'he wires und 5G` s0 that.' when the circuit eloseis .e and s nie closed, the electro-magnet 60 wiii be energized at he sume 'ime the signal oiibeii 57 is energized. This energizing of the nmgne GO moves the Contact iofi bile position shown in Fig. l te ine positiva siioii'n in Fig. 2%. so that iie eonee; xviii engage the contact H somewhii eaiiiei' in the acceleration of the speed 015:' the 'iziin than when theel-minet ii is heid in is fniij.' retracted pusiion spiing. in iiesj/steni heireinbeme deseiibeiiihe stop eiieui is nin-indiv opened. but it any be 'desirable 'to employ a neimelij; Giese@ te nieve lib-5 nected'witli the tinck rails 'for electr v tiene weight or hammer 66 which is adaptq ed to strike, when the electro-magnet 24 is denergized, a latch 67 to release it from the 5 linger 22 of the brake valve actuating Ineens. The stop circuit controlling relay 3l acts on `this ern-sature or movable Contact 29 in such a manner pas to normally engage the fixed contacts 30 and at low speeds the device 50 serves to inaintainthe contacts 9.9 end 30 inengagement in case the relay 3l is de'nergized lby the presence of another trairnin the block. slider or bodily movablecontact 68 is operatively connected with the reciprocatory rod 49 of the speed respcnsiy device D. rlfhis sliding Contact 68 is adopted to engage nnen contacts 69 and 7.) which normally iorin with the slider 68 e port of the stop circuit, the slider being in the posltion shown by dotted lines, Fig. when the train is not moving. Cooperating with the slider 'is movable contact 7l. carrying an armature T2 which is adapted be ottracted by the electro-magnet @il `when the bell circuit is closed, thereby opening the stop circuit at a time when the train is traveling at such s speed that the slider is out ot engagement with the contact 69, es shown in Fig. '(3. ln case the trein attains a dsngerf'isly high speed the slider 68 will niove so far to the right, Fig. 5, that thehinsulaion 74 will pass under the contact .71 and open the stop circuit. Of course when the extension is retracted from the contact 29, the stop circuit con be opened by denergizing the relay 3l another train in the block has opened the circuit by disconnecting the Contact rails r and AFrom the 'foregoing description teken in connection with the accompanying draw lings, the advantages of theinethod of: operotion and of the apparatus shown will be readily understood by those skilled in th art to which the invention appertains, and while l have described the apparatus which l non' consider to be the best embodiment thereof, l desire to have it understood that the apparatus shown in merely illustrati-ve, and that such changes may be inode 'when desired as are within the scope of the appended claims.

lrlaving thus described my invention l claim as new and desire to secure Letters Patent: l

lin a trein stop stein. the combinetiooffof a Vblock consi ing of trackv rails, a sourceol current connected with the rails, contact rails and an electric device conf ny fand lconnecting the contact rails' together adapted to be delocrgisicd by the finies of the train sliortmircuiting the said source or" j current' :for causing the Contact rails to be disconnected.. a stop circuit on the trein, a

normally energized relay including contacts' controlling the stop circuit, a shunt around4 the contacts, means for opening the nor molly closed relay circuit and connecting the relay with. the Contact rails whereby the re- .ley maintained energized when the contact rails are electrically connected and is denergized when the contact rails are disconnected, end a speed responsive device adapted to control the shunt and the contacts of the relay for controlling the stop circuit independently of the relay when the speed of the train reaches a predetermined rate. v

2. ln a. trein stop system5 the combination of a block consisting of track rails, a source of current connected with the rails7 contact rails and anelectric device connected with the track rails Jor electrically connecting the Contact rails together and adapted to be dene-rgized by the axles of the trein short-circuiting the said source of current for causing the contact rails tobe disconnected, a stop circuit on the trein, a normally energized relay controlling the stop circuit, means for opening the' normally closed relay circuit and connecting the relay with the contact rails whereby the relay 'is maintained energized when the Contact rails are electrically connected and is deenergized when the contact rails are disconnected, o speed responsive device for con- "trolling the stop circuit independently of the relay when the speed of the train reaches a predetermined rate, and means actuated bythe speed responsive device for preventing the relay from controlling the stop circuit When the speed of the train is below' a predetermined point.-

' 3. In a system of the class described, the combination of a pair of contact rails, a controlling circuit including a pair of circuit breakers each having a movable mein- 4ber moved to open circuit position by a. contact rail, a switch controlled by the presence of e. train 1n e block for connecting or discombination ol2 a normally closed relay circuit carried by a train -aud adapted to be opened by another controlling train, a speed responsive device includingn movable element,v and a stop circuit including@4 switch controlled mechanically by the said element the speed responsive device or electrically 'oy the relay circuit.

connecting the contact rails, a shoe on each l wel 'lle class described, 'tlie D connected with 'the crcuit and normally' separated, n normally open shunt around tire said contacts, and speed responsive means for closing the shunt energize the stop circuit independently or the relay.

d. in a system of the class described, the combination of a train stop circuit, a relay Jing contacts connected With the cirenrt end normally separated, e normally einen shunt around the Said contacts, said -l it including separately movable contacts, speed responsive device for moving one for closing' the shunt at a predeter- '2 speed of the train, end means w the other contact for closing the et a lower sneed. e system ci the class described, the combination of e 'train stop circuit, a relay having its contacts connected with the cirit and normally separated a normally i n shunt around the said contacts,l said seienJ including seperately movable contoets, e speed responsive device for moving one Contact tor clcsingtlle shunt et predetermined of speed of 'the train, electrdroegnet for moving the other conr to close the shunt et e lower speed, end

e on 'the track for contro ling the cirrne seid electromagnet. e of 'the class described, the

einen in step circuita a relay cuit' and normally se combination of a stop circuit including an electro-magnet, a tram stop device controlled by! the electro-magnet, a relay normally energized, means whereby said relay is deenergized when the train is in the controlling range of another train, the contacts of the relay being connected with the stop cir1 arcted, and on anto` matically. "actuated oclt for holding the contacts out or engagement when the speed is below o certain oint. Y

9. ln a system o the classdescribed, the combination of a stop circuit including en electro-magnet, a train stop device controlledoy the electrdmagnet, a relay no1-- mally energized, means whereby said relay is denergized when the train is in the controlling range of another train, the contacts of the relay being connected with the stop circuit and normally separated, an automatically-actuated lock for holding the contacts out of engagement When the speed is below a certain point, and a speed responsive device for closingthe stop circuit when the speed of the train reaches a predetermined point.

In testimony whereof I have signed my name to this specification in the presence ot' two subscribing Witnesses.

' ENS GUIMARES MASCRENEAS.

Witnesses SAMUEL W. HANAKER, d'. R. Ruini.

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