US1136944A

US1136944A - Automatic train-stop.

Info

Publication number: US1136944A
Application number: US79410713A
Authority: US
Inventors: Charles A Eib
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-10-08
Filing date: 1913-10-08
Publication date: 1915-04-27
Anticipated expiration: 1932-04-27

Description

N E a f @L-fsf'- It@ "4| im l i 'La wwNEssEg l 'Uf/WQ? 'l 2 SHEETS-SHEET I.

' ATTORNEY f C. A. EIB.

AUTOMA'HC TRAIN STOP.

APPucATloN FILED ocLe. 191s.

i Ll

Entented Apr. 27, 1915.

y 2 SHEETS-SHEET 2.

INVEN'KOR WITNES'SES i ATTORNEY sara lll . CHARLES e.. me, or New enuivstvrcn, New JERSEY.

AUTGMTXC TRAN-SCP. v

.Specification of Iaettrsetent.

rali-.estad apr. er, isis.

Application mei coter e, isis, sensing. votre?. f

it may conce/Mi."

:noun that I, CHARLES A.: Ens, a n. of the Yinit-ed States, residing' at Alnwick, in ille county of lviddlesex anduseful utomatic Train-Stop, or :litlie following is a specilication.

'Alie invention relates to improvement-s in automatic trein stops.

The object of the present invention is to improve the construction of automatic train. stops, andto provide a simple, practical and elicient trein stop of strong 'and durable construction adaptedto be easily applied to modern high speed compound locomotives vand other engines, and designed to be operated either independently of or in conjunction with the usual lliiain signals, and capable should an engineer attempt to pass a signal set against him of cutting olil the steam of the engine and applying the brakes7 Wherebytlie train will be brought to a standstil-.

A further object ol the invention is to provide `an automatic train stop oi this character, which will be beyond the control ot' tlie engineer and which after an operation will require an engineer to leave .liis

and manually reset the mechanism. Iinotlier object ot' the invention is to provide automatic i ain stop equipped with a track icej ivliicli will ellectually prevent unauthorized persons from sur'eptitiousljfr moving it to its engaging position for stopping a train.

V/'Yitli these and other objects in view, the invention consists in the construction and novel combination of parts hereinafter' fully described, illustrated ii the accompanying drawings. and poinLcd out in hereto appended; it being understood that various changes in the forni'g proportion,

size and minor details of constructionnvitl in the scope of 'the claims. may be resorted to without departing from the spirit or sac-4 with an auto L te of levv Ilersey, have invented the claims showing the track device in its raised position. Fig. l is an enlarged vertical sectional view oi the track device.`

Lilie numerals of reference designate corresponding parts in all the figures of the drawings.

ln thel accompanying drawings in @which y is illustrated the preferred embodiment of the invention7 the automatic train stop comprises in its construction a steam cylinder l preferably mounted in a vertical position beneath the boiler 2 of a locomotive and bolted or otherwise secured toa transverse supporting is attached to and depends from the bottom sheet 3. The supporting sheet 3 I of the boiler, but the steam cylinder may be mounted and arranged in any other preferred manner. The steam cylinder has a verticallymovable piston .il provided with a piston rod 5 extending upwardly through a stuliing box 6 at the 'top of the cylinder and connected with a brake `operating lever i' ancl,.vvitli valves and 9 arranged to cut of? the. tloiv of steam from the boilerito the cylinders of the locomotive to stop the operation of the latter simultaneously with an application Olathe air brakes. The lever 7 which is arranged in a horizontal position when the piston is at the lovver limit of its travel, is pivotedat its front end l0 tothe upper end ot' a vertical supporting arm ll and is suitably connected at an intermediate pointvvit-li the piston rod to permit a pivotal l inoveinent of the parts, and its rear end 1s y.

provided with an eye l2 to which is secured one end of an operating cord 13, extending downwardly from the lever 7 and passing around the guide pulley'li and designed to extend to and connected with a suitable valve forreducing the pressure in the, train pipe for effecting an operation of the brakes.' Any suitable air valve may be employed for bleeding tlie train pipe of the air brake system, and as the present invention is ap` plicable to various forms of valves7 a detail descriptionand illustration of a particular type of yvalve is deemed unnecessary., The supporting arm is suitably secured to' the stearn cylinder at theftop'thereof/andAvv projects 'upwardly tltereiroin. -Thc guide pulley lil is mounted in a bifurcation of a horizontal supporting arm or bracket l5, Wliicnis suitably secured'to the rear face of the supporting sheet 3.

The upper end ot' the piston is connected by a bolt 16 or other suitable pivot to the inner end ofia transversely disposedlever 17 fulcrumed at an intermediate point to. a fixed supporting arm 18 by a suitable pivot 19 and connected at its outer terminal to the, rear end of a horizontal arm of a bell ,crank lever 20. The supporting arm 18 is secured' to the boiler of the' locomotive at one side` thereof and extends downwardly therefrom, as clearly shown in Fig. 2 of the drawings, and the bell cranklever, which is fulcrumed L at its angle-on a Vsuitable pivot 21,'has an upwardly extending*v arm 22 arranged in y approximately a vertical positionand provided with a slot 23'inwhich operates a suitablelpin or pivot 24 for connecting the bell crankdever with a depending armf'25 of a valve rod or stem-26. The valve or stem' is providedv with. an outer'extension, to which the said depending arm 25'is secured The bell crank lever is supported-by an .approximately U-shaped bracket 27 secured to the locomotive at one side thereof andhaving the said pivot 21 mounted on its outerv portion. Any other suitable means may, of course, be employed for mounting the bell crank lever, and in practice the con-- nections between the steam cylinder 1 and the valve or valvesof the steam conduit 28 of the locomotive willbe mounted and arranged to suit vthe type of locomotive to which the automatic train pipe is applied. In the locomotive illustrated in the accompanying drawings, the steam conduit 28 is provided at the front with two branches 29 leading to the steam cylinders at opposite sides of the locomotive, the valves 8 and 9 being necessary to cut oil the How of steam to both sets of cylinders of the locomotive. In any type of engine'where a portionof thesteam conduit 28 is directly accessible, a single valve maybe employed 'for cutting off the steam from the boiler to the cylinders.

The valves 8' and l9, which are located at opposite sides of the locomotive, are straightway shut off valves, but any othertype of valve'may be employed. These valves 8 and 9 are' providedv `with'A transversely alined valve plugs having stems 30 and 31 detachably connected at their adjacent ends by a suitable Vcoupling 32 consisting of a socket and 'a removable coupling pin Aor key 33 and adapted to permit the valve stems to be separated when it is. desired to remove the valve plugs. The socket of the coupling has a rectangular opening and the vstem 31 'is squared to fit the same so that when the arm 25, which is connected with the stem 30 is oscillated, the valve plugs will be simul` taneously actuated to open or closethe valves Sand 9. v l l The steam cylinderhas a steam chest 34 and is provided with upper and lower feed and exhaust passages 35 and 36, which are controlled by a slide valve 37 adapted to connect the feed or inlet passage at one end of the cylinder with the' steam chest and the exhaust passage of the other end of the cyllinder with an exhaust chamber or escape 38, while closing the other passages. When' the slide valve is at the downward limit of' its trayel, asillustrated in Fig. 3 of the drawf cylinder being maintained in such` position by steam pressure, Steainfromthe boiler to the locomotive is admitted to, the steam phest 34 byv a pipe 39 extending from'the Y. upper end ofV the'steam chestl to the pipe 40,

" tain the necessary .pressure for operating.

the piston. When the slide valve is moved .ingS, the piston 4 is at the lower endfof the 'A from its lower position to its upper position,

steam is admitted'to the lower endet 'the cylinder 1 and the upper end of the cylinder the piston 4 is caused to travel upwardly, thereby oscillating the brake operating lever 7 and simultaneously transmitting motion .is connected with the-exhaust'chamber end to the bell crank lever, which closes the valves and cuts off the supply of steam to the cylinders of the engine. u

The slide valve is connected with a def pendingrod or stem 41a, extending througha stuiing box 42- at the lowerend ofthe steam chest and guided in anarm 43 of ai, bracket 44 and yield'ably connected with the shoe 45 adapted to b`e' actuated by 'a track device 46. The slide valve is preferably supported in its 'lower position by a. set collar 47 mounted on the valve rod or stem and arranged' to rest vupon the lower end of the steam chest. The upper terminal portion 48 of the valve rod or stemis threaded and is secured'in openings of projecting ears '49,` of the slide valve by nuts 50. 'The supporting bracket consists of a depending armA provided at the upper end with an attaching .portion 51,. which is bolted or otherwise tion 52, extending below. the horizontal guide ,Y

arm 43 and bifurcated-to receive one end of vthe shoe 45, `which is connectedto the bracket by a pivot 53. The'shoe, which is curved longitudinally to presenta lower convex surface', is provided at-a point lintermediate of its endswith an upwardly projecting lug.

54, which is pivoted bya bolt orrivet 55 in the lower bifurcated'nd of the vertical sleeve 56, slidably mounted on the lower en d of the valve-rod or stem 41 and receiving a coiled spring 57 interposed between the shoe 'and the valve Stem tocushion the former and cylinder 6l is connected at 'ranged in said nuts and the-lined messes rmotive to contact with the track device 6 Without injury even when the train is traveling at a relatively high rate of speed. The

sleeve 56 is provided at opposite sides with longitudinal slots 58 into which extends the terminal portions of a 'transverse pin 59 piercing the valve rod or stem and project-` ing from opposite sides thereof.

The track device s6 com rises a vertically movable plunger 60, provided at its upper `end with a. rounded transversely disposed head, and operating in a vertical cylinder @6l having an 'attachmg'portion 6 2 at its lower end and suitably secured between the rails preferably at the central portion of the track, as illustrated in Fig. 2 of the drawings, but the track device and the cylinder l may be located at one side of the track so that a separate set of signals and track devices may be arranged at each side of a single track 'for controlling trains traveling thereon in opposite directions. The vertical the bottom by a pipe 63 With a suitable source of air supply, preferably the pipe lines, for operating a semaphore or other signal and when pres sure is introduced into the lower end of the cylinder 6l, the plunger 60 is iorced upwardly to its elevated 'or engaging position in the path of the shoe e5. Vihen the ai .is exhausted, the plunger descends by gra ity assisted by coiled springs 64, mounted onA the lower portions of spaced vertical rods 63 secured at their uppeiends to the transverse head of the plunger GOand extending downvvardly therefrom through openings in horivZontal guiding arms 6G, preferably formed integral with and extending' from opposite sides of the cylinder Gl at the upper portion thereof, as clearly illustrated in Fig. d or0 the drawings. The upper ends of the slidable rods 65 are preferably threaded in perforations of the cross head of the plunger, and the lower terminals of the said rod are threaded for the reception or' nuts 67, ar-

pairs and-supporting the coiled which ar'e interposed between the horizontal guiding arms 36'. The plunger 60 is provided at its lower portion with suitable packing rings and in practice suction Will effectually prevent the plungerfrom .being surreptitiously lifted by unauthorized persons when the air springs 6%,

is cut on, so that it will be impossiblelfor' such persons /to stop a train by"1noving a trackfdevice from' its loiver toits 'elevated or engaging position. No claim is made 'in the present application to the track device.

vWhen the mechanism carried by a train eilgages and is operated by the track\device, the brakes are applied and the steam is cut oil from the cylinders of theengine,r and it is necessary after the train stops for the en gineer to' descend from the cab and swing its? the shoe downwardly from its elevated position to its lowered position. This changes the position of the slide valve and admits Lsteam to the upper end of the cylinder l and exhausts steam from the lower end or the cylinder, thereby returning the .brake oper ating lever and the valves 8 and 9 to their normal positions.- The valves 8 and 9, which. control the supply of steam from the boiler tothe cylinder', are independent ol' the throttle valve and are located interiorly oil the locomotive between the throttle valve the cylinders ot the engine, and the said valves are beyond the control ci the engineer' so that it is impossible for the latter to int-er tere with the operation or the automatic train stop. instead of connecting the pipe line 39 with the pipe 'l0 or other steam'supply pipe of the locomotive-it may be connected with the air tank and the piston e operated by compressed air. That is claimed is f l. In an automatic train stop, the combi? nation with a locomotive, ci asteani corr trolling valve mounted in the main steam conduit of the locomotive at a point between the throttle valve and the cylinders for cute ting oli the steen a cylinder located beneath the locomotive andl having a piston, lever.

connections between the piston and the steam valve, a 'reciprocatory valve mounted on theA cutting on' the steam, a vertical cylinder located beneath the locomotive and having a vertically movable piston, mechanical means for connecting the lpiston with the steam controlling valve for actuating the-latter, a ver'- tically movable rcriprocatory valve mounted on the cylinder and having a depending stem, and a shoe connected to the stein and arranged to actuated by a track device.' y

ln an automatic train stop, thefcombination with a locomotive having ai-niain s camlconduit lprovided with branches extcndillg to opposite sides of the locomotive, 'of steam controlling valves mounted in the sa'id Abranches and' located :it/points between the throttle valve rand the cylinders, said valves being provided with means extending across the locomotive forl connecting them and causing the valves lto operate in unison, an arm connected .with one ofthe valves, a bell crank lever'fulcrumed at lits angle and having one oi' its arms connected to the arm oi the valve, a cylinder having a piston connected.withv the other arm of the bell crank lavagna-.track device, and

ranged in the path ofand adapted to be actuated by the track device yfor controlling lthe flow of fluid pressure to and last-mentioned cylinder.

, l. In an automatic` train stop, the combinationwith a locomotive, of a steam controlling valve mounted in the main steam 'f'cenduit of the locomotive ata point beyond the4 throttle valve, avertical cylinder car- A riedby the locomotive and located beneath "the boiler and having a piston, a transverse lever fulcrumed atan intermediate point and connected vatjits inner end Withthe piston,a bell crank lever arranged at one slide of' the locomotive'and having an arm connected withthe steam controlling valve,

means for connecting lthecther' arm of thel bell lever' with the outer arm of the transverse lever, a track device, and means carried vby the locomotive and arranged in the path of and adapted to be actuated by the traclc device foricontrol-ling the. flow of fluid presentje, `to-and-'lrom theV cylinder.

5..In`nsauftomatic train stop, the combinationwitha locomotive, of a steam controlling valve" conduit of--the tive at a point beyond .the throttle. ivalve-, a" cylinder located be-A neath the locomotive and having a piston ated by a track device.

6. In an automatic train stop, the combination with a locomotive, of a steam controlling valve mounted in the main steam conduit of the locomotive at a point beyond the throttle valve, a cylinder located beneath the locomotive and having a piston connected with the steam controlling valve for actuating the same, a reciprocatory valve mounted `on the cylinder and having a depending stem, a pivotally mounted shoe l'ocated beneath the valve stem, and yieldaole means including a cushioning spring for connecting the shoeto the rod lor stem.

7. In an automatic train stop, the combination with a locomotive, of a steam controlling valve mounted in the main steam conduit of the locomotive at a point beyond the throttle valve, a vertical cylmder havfroin theritedin' the main steamv ing avpiston connected with the steam concylinder and provided lWith a depending stem, a bracket secured to and depending froxn `the cylinder, and a shoe pivotally mounted on the bracket and connected to thestem, said'shoe being arranged to lbe actuated by a track device.

. 8. An automatic train stop including a vertical cylinder having a piston, a valve controlling the admission of fluid pressure tothe cylinder, va vertical rod or stem connected with the valve, a bracket secured to and depending from the cylinder and hav- .ing means for guiding the rod o r stem, and a shoe pivotall mounted on the bracket adapted to be actuated by a track device.

9. An automatic train stop including a;

` to the cylinder, a vertical rod or stem`connected with the valve, a bracket secured to the lower end of the cylinder and provided :at an intermediate point with a horizontal guide arm receiving the rod or stem, Said bracket being also provided with a lower and connected With the rod or stem and supporting portion projecting below they said arm, and a shoe pivotedto the supporting portion and connected With'the rod or stem.

l0. `In an automatic train stop, the combination with a locomotive, of a steam controlling valve'mounted in the main steam conduit beyond the throttle valve, acylinder having a vpiston operating in the cylinder and provided with a piston rod, a pair'of v levers connected directly with and actuated by the piston rod, one ofthe levers being designed to be connected with an air brake valve, means for connecting the other lever with the steam controlling valve, a recipro' catory valve mounted on the cylinder and having a depending stem, and a shoe connected to the stem and arranged to be actuated by a track device.

In testimony, that I claim the foregoing as my own, I have hereto alixed my signa. ture in the presenceof tWo Witnesses.

CHARLES A. EIB.

Witnessesr FREDERIC W. EIB,

4 JOSEPH A. 'HAY'1'ER, Jr.