US1771926A - Train-stopping device - Google Patents

Description

July 29, 1930.

A. P. I HRADESKY TRAIN STOPPING DEVICE Original Filed Nov. 23, 1928 3 Sheets-Sheet l I V Inventor //j[.P.H1"adesir 1 /V 1 m m h m m July-29, 1930. A. P. HRADESKY 1,771,926

TRAIN STOPPING DEVICE Original Filed Nov. 23, 1928 I 3 Shoots-Sheet 2 Inventor ffra desk r by l/Qb a Attorney July 29, 1930.

A. P. HRADESKY TRAIN STOPPING DEVICE Original Filed Nov. 23, 1928 3 Sheets-Sheet 3 Patented July 29, 1930 UNITED si-rA E-sf ANDREW r. 'IIRADESKY,.QF 1 Q N-. rnif et-iiNewSXLYAL A5 Tne u-srorr-ING nnvxon application filed, November 23,192 Serialii'o. 321,4O1. Renewer1 June2,:1913t1 The; present invention relates, to improve. ments in train stopping; devices, and .has for its principal object to provide a-means Where-i by, a train, either freight or passenger, may:

5 be brought automatically andiquickly to. ,a standstill when rendered necessary through unforeseen circumstances. 7. f

The invention consists essentially; in pro; viding automatic means for, cutting ea, the

supply of steam from tlreboiler of the 1000- motive to; the steam chests and simultaneously valve that: is associated witli-lthe rockable shaftoperated by; the tripping m-echanism.

Figurefi is -a sectional vievv through a loco motive cab showing the mounting for the rockaloleWa-lve carryingshaft andthe depende.

ing arms at the outerends of said shaft which A are r provided withrollers for cooperation with -the tripping mechanism at the side of i the rails, and-= i Figure 7 is'ia diagrammatic view-showing .the various connectionsffor actuatingf the,

admitting air to the brake cylinders to-apply;- valvesassociated with thest-e'am and airlines the brakeswhereby the train will be brought to (a standstill; I I

ping device that, includes a, particular trip; mechanism controlleddiroin a remote pointby tlre'tower'rnan so that said tripping inechanism m ay be setto reflect; the stopping of an 20 approaching train iii-ease of an emergency? Still a further object is to'provi'de a train; stopping device ofthe above nientionedchan; actor that will atall times be positive-and el'fie cient in its operation the same-being; further :5, of such construction asto permitthe installa tion thereof on the train and s also along, the side ofthe rails ofa trackway Other obj ects' and advantagesof;the invention; ,will become apparent from; the following. 3:.) description when taken in connectionv with the accompanyingdrawings.

respectively: w I 1 i In the drawings wherein for the purpose of g i A further object is to, provide a trainstop lllustration iszshown other,preferredxembodimentof my invention, the numerall de-sig nates the cross ties. which support the i parale lel; spaced [rails 2 and '3 in: the: usual manner. I Uponlreferring to. Figure 1 it willbe noted thaticertain of th-eacrosstiesnareof greater '70 length than others; and these lOnger'cross .ties at support'the tripping mechanis1n'-de:-

noted generally by thenumeralon Thistripping mechanism includes a pair of longitudi nally extending streadles 6 and 7 respectively:

thatzare hingedlyconnected together) attheir adjacent endsas at-8 said treadle'sbeing'dise. posed parallel with :the ,rail'2 andcth eeouter,

- ends r of these 1 treadles are .slidably" and piv-,

otally ,mounted in suitable. brackets 9 ar ,80

ranged on the projecting endspfthe-longer,

In the accompanying .draw1ngs ;wherein "ties'L; As is more olearlyshown in Figure 2,

like reference characters indicate corresponds ing parts throughout the same j :41. Figure l is-a top plan-viewshowing the; trip mechanism, arrangedadjaoent the; rails d ses -wi g h tu ing m n -0 1' s i trip mechanism. I

Figure 2 is an elevational vieweof; the 4a .hinged connectegl treadles -;tormi;ng imperia -rn p n efytheg' t i p n eehan em g eia ec on Lv w:tak aepp toe e 1113x813,bnmtheillnl3%3 .CfjFigurq;l shewing ones of the linger cross ties g tor the .,tr a 1e stre u eijn welder-ame 43 i Figured isia detailperspeetfve.. te t m rocker shaftalso: for Qn-g a par t-ofiwthetrip ping mefihanism. V

Figure 5 is ,a .-sect iona].= :yiew ,rthr-oughqthe, valve body associated with thegsteam-line end 5Q set ssl i-nee ee he e nta aik seases each :of thetreadle-s may be reinforced on itsunderside, Y

Upon referring to Figure/.3 will benoted sa 6 and. 7 ied spe dzine :heri-z nal-epee t1 ereby; t eeame arerre d ed 1 9mm e ckia @1 eieurne d e su te aeieeee t dt e ieo h er iets;

eleuheraile@ee ck;

is j I 0015msor.ieedeef th;t ead ea et 3 J eem n e eti ere ah d e=ra 1i idi f "PQSQQM, arti. i.

iii

operating rod or cable 15 that leads to a nearby tower (not shown), where the towerman may operate the same. The rod or cable 15 is guided over suitable guide rollers or pulleys 16 that are arranged at spaced intervals adjacent the rail 3 as shown in Figure 1. The steam pipe or line that extends from the boiler 17 of the locomotive is shown at 18 and branch pipes 19 provide a means of communication between the steam line 18 and the steam chests 20 as shown diagrammatically in Figure 7. The engineers throttle valve arranged in the steam line in the usual'ma'nner is indicated at 21.

A cruciform shaped fitting 22 is interposed in the steam line 18 adjacent theboiler 17, the steam line having its sections connected with the vertical portions of the cruciform shaped fitting, as clearly indicated in Figure 5. This fitting 22 constitutes what I term as a valve body and arranged horizontally through the valve body is the rocker shaft 23, a rotary valve 24 being arranged at the intermediate portion of this rocker shaft for rotation within the valve body 22 and this valve is formed with a transverse port 25 which is normally dispose-d. vertically to afford communication between the sections of the steam line so that steam will be supplied to the steam chests in the usual manner.

An arm 26 extends downwardly from each end of the'rocker shaft 23 and the lower end ofieach arm is formed with a fork within which is mounted for rotation a roller 27 that is adapted to cooperate with the tripping mechanism 5 in the manner to be presently described.

Upon referring to Figure 6 it will be observed that the rocker shaft 23 extends horizontally through the opposite sides of the cab of a locomotive, and this shaft is journaled in suitable bearings 28 arranged on the upper ends of the standards 29.

A vertically disposed lever 30 is secured at its intermediate portion on the rocker shaft 23 for movement therewith.

The brake cylinders that form a part of the air brake system of the train are shown at 31 and air is supplied to these cylinders for actuating the brakes through the pipes 32 and a rotary valve unit 33 is arranged in the air line 32, the stem of the plug of said air valve being shown at 34 and carried by the outer end of this stem is the lever 35. The lever is secured at its intermediate portion on thestem 34 and is normally disposed vertically. 'Air is supplied to the line 32 from any suitable source. l

The invention further comprehends the provision of a segmental notched bar 36 that is formed in its upper edge with the spaced notches 37 with which cooperate the spring pressed pawl or dog 38 carried on the lower end offa rod 39, the upper end of the rod being operatively connected with an auxiliary handle 40 and this handle is in turn pivotally secured on the upper end portion of a vertically swinging lever 1-1.

A rod 42 provides an operative connection between the lower ends of the vertically disposed levers 30' and35, while a similar connection is provided between the upper ends of these levers as indicated at 43. In addition, the pivoted lever 41 is operatively connected with the upper end of the lever 35 through the medium of the connecting rod 44: as clearly illustrated in the vdiagrammatic illustration in Figure 7.

The operation of my improved train stopping device may be brictiy stated as follows: Under normal conditions, the tripping mechanism 5 is disposed in a lowered inoperative position, and the valve-25 is opened, while the valve 33 is closed, thus permitting steam to enter the steam chests 20 through the steam line under the control of-the engineer by reason of the throttle 21.

In case of an emergency, the towerman operates the rod 15 to actuate the rocker shaft 11 so that the crank 12 will operate the hingedly connected treadles 6 and 7 to swing the same upwardly to the position shown in F igure 2 so that said treadles will be in the path of movement of the adjacent arm 26. When said treadles 6 and 7 are swung upwardly to that position shown in Figure 2, the cranks 10 connected with the outer end portion of each treadle for cooperation with the brackets 9 will slide inwardly toward the inner end of the bracket, and at the same time function as a pivot for the outer ends of said treadles; When a train is traveling in the direction indicated by the arrow in Figure 2, the roller 27 will strike the treadle 6 and this will result in the rocker shaft 23 being actuated so as to move the valve 25 to the po sition shown in Figure 5 thus cutting off com munication between the boiler and the steam chestand simultaneously the connecting means between the levers 30 and 35 will operate the valve 33 to open the air line and cause air to enter the brake cylinder 31 and effect the actuation of the brake mechanism to bring the train to a standstill almost immediately. At the same time the lever 41 will be'actuated to move the locking pawl or dog 7 38 into one of the notches 37 thereby holding the parts in their positions.

The parts are so constructed as to effect the stopping of the trains regardless of the direction in which the train is traveling, and, a train stopping device of this character will at all times be positive and eflicient in its operation as well as automatic. Furthermore a train stopping mechanism of this character can be installed at a very low cost and will not necessitate any material alterations to the parts of the train with which said device is to be associated.

While I have shown the preferred emranged in the steam line, a rock shaft rockably mounted in said valve casing and extending outwardly of the casing at opposite sides of the casing, that portion of the rock shaft within said valve casing having a valve member formed thereon for controlling the passage of steam through said steam line, a lever i mounted intermediate its ends on said rock shaft, a second lever mounted intermediate its ends on the stem of the valve in said air line, an operating connection between said levers, a tripping mechanism for disposition along the side of the track, an arm depending rock shaft in one direction for simultaneously moving the valve carried thereby to a closed position and the valve in said air line to an open position, whereby said manually controlled lever will be rocked in one direction, a spring pressed dog carried by said manually controlled lever, and adapted to engage with a notch in said notched bar for retaining said valves in their last mentioned position,

and said spring pressed dog adapted to fricti-onally engage with a smooth part of said notched bar when said manually controlled lever is moved in an opposite direction for retaining said valves in their normal positions, and means for setting the tripping mechanism.

In testimony whereof I afiix my signature.

ANDREW P. HRADESKY,

from said rock shaft for engagement with the tripper mechanism when the latter is set whereby said rock shaft will be actuated for moving the valve carried'thereby to a closed position, and the valve in the air line to an open position, a notched bar, a pivotally mounted lever'disposed in operative relation to said notched bar, an operating connection between said last mentioned lever andthe lever mounted on the stem of the valve in said air line, whereby when the valve in the air line is moved to an opened position, said last mentioned lever will be rocked, and a spring pressed dog carried by said last mentioned lever, and adapted to engage with. one

of the notches in said notch bar for retaining said valves in their last mentioned position.

2. In a train stopping device, the combination with the steam line and air line of the air brake system of the train, a normally closed valve arranged in the air line, a valve casing arranged in the steam line, a rock shaft mounted in said valve casing and projecting therethrough, a normally open valve member formed on said rock shaft within said valve casing, a lever secured intermediate its ends to the stem of the first mentioned valve, a second lever secured intermediate its ends to said rock shaftexteriorly of the casing, an operating connection between said levers for simultaneously actuating said valves, a notched bar, a manually controlled operating lever pivotally mounted in operative relation to said notched bar, means operatively connecting said manually controlled lever with the first mentioned levers, an arm depending from the outer end of said rock shaft, a tripping mechanism for disposition alongside of the track, said arm adapted to engage with said tripping mechanism for moving said

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