US1806214A - Railway car brake - Google Patents

Description

May 19, 1931. P, PERRY 1,806,214

:RAILWAY CAR BRAKE Filed May 19, 1928 3 Sheets-Sheet l INVENTOR: OLLtE P. PE RR6..

ATTORNEYS Patented May 19, 1931 PATENT OFFICE OLLIE P. PERRY, F JACKSON, KENTUCKY RAILWAY CAR BRAKE Application filed May 19,

My present invention relates to improvements in railway car brakes of the automatic type, which while adapted for use on ra1l- 'way cars generally, are particularly de- 5 signed for use on cars'employed in industrial plants, as for instance on minlng cars. The primary object of. the invention is the provision of means actuated from a trackside installation for applying the brakes to the wheels of the car as the latter runs on a down grade. In carrying out my invention the brakes are applied to retard the descent of the car down the grade, and means are provided for applying the brakes at the top of the grade, and then for releaslng the brakes at the bottom of the grade. The track-side installation includes a trip device situated at the top of the grade, and

. a similar trip device located at the bottom of-the grade, which devices successively coact with operating means carried by the car for partially applying the brakes on the car, and then for releasing the brakes from --the wheels. As is well known in mining operations the loaded car passes over the railsin one direction, and returns empty in the opposite direction, and therefore the track-side installationis employed in connection with the rails over which the loaded car passes as it descends the grade. By means of the brake operating mechanism the progress of the loaded car down hill is retarded, and as the car approaches the bottom of the grade the brakes are released to permitthe car to gain sufficient momentum to insure its further progress along the tracks.

In .the accompanying drawings I have 4 shown a car with two two-wheel trucks and the brakes are applied to the four wheels. It will be understood that the number of brakes employed may be increased or diminished as desired, and while Ihave shown 4 5 the track-side installation at the right side rail, it will be understood that the trips may be duplicated at the left hand side rail, and the brake applying levers as well as the brake release may be situated at one or both sides of the car, depending upon conditions 1928. Serial No. 279,063.

to be met in connection with the railway and its rolling stock.

The invention consists in certain novel combinations and arrangements of parts as will hereinafter be more fully set forth and claimed.

In the accompanying drawings I have shown one complete example of the physical embodiment of my invention wherein the parts are combined and arranged according to the best mode I have so far devised for thepractical application'of the principles of my invention.

Figure 1 is a view in side elevation showing a car equipped with the brake mechanism of my invention the car traveling in the direction of the arrow and having its brakes partially applied to retard its progress. Figure 2 is a view similar to Figure l with the car traveling in the direction of the arrow after its brakes have been re leased. Figure 3 is a top plan view of the braking mechanism, some parts being shown in section. Figure 4 is a vertical sectional view at line fir-4 of Figure 1. Figure 5 is a detail view partly in section of one of the resilient couplings for the brake. Figure 6 is a view in elevation of one of the trips, showing the rail in section. Figure 7 is a side view of the device of Figure 6.

In order that the general arrangementand relation of parts may readily be understood I have shown a well known type of car G having the usual wheels W journaled on the axle A, and the rails are designated R.

The breaking mechanism is shown at each side of the car and applied to each of the four wheels. A usual type of brake shoe 1 is employed for each wheel and the shoes are suspended by links 2 from the horizontal bracket arms 3 which are bolted at each side of the car body. The bracket arms each have a central hanger 4: for the rock shaft 5 which is disposed transversely of the car between the two axles and journaled in bearings 6 of the hanger.

Upon the ends of the rock shaft are provided double crank arms 7 which are keyed on the shaft, and these crank arms are proivded with slotted'ends and joined by exbrake shoe, and this bolt also has endcup tensible, adjustable, resilient, couplings, to

the brake shoes. These couplings are designated as a whole by the letters B and D.

As shown in Figure each of the couplings includes a bolt, 8 that telescopes in the tubular screw bolt 9., and the bolt 8 is fashioned with an end ring 10 pivoted to the or hollow head 11". -"A spring '12 is coiled about the coupling and interposed between the cup 11 and a washer 13 011 the tubular screw bolt, and lock nuts 14 on the screw bolt are used to vary the tension; of the:

spring and'to take up or compensate for wear of the parts. The tubular serew' bolt 7 has an eye 15 which ispivoted to one of the do'ublecr'ank arms on the rockshaft. In" 1 Figure'l the double crank arm-7 is'in positionto partially apply'the brake shoes 1 to the wheels, and theiresilient couplings B and f D hold the brakeshoes in their partially ure '2, while theyare' shown Withthe brakes "applied or.partially:applied i'n'iFigure-l.

p A' brake lever'16 is used atom or both applied position. In Figure 2' the double crank arm is swung to released position, and the resilient couplings hold the brake shoes in thisposition, the links 2 hanging in vertical positionfrom the bracket arms 3, The

parts 'are'shownin normal position in Fig sides. of the carf'and] this lever is fixed to the r cksha'ft 5 in position to be tripped as'it -encoiinters orcontacts witha trip roller 17 of. -'the track sideinstallation; f

The roller- 17 is located'atthe inside of the rail 'and' fis 'journ aled'f in a pring pressed bolt l'g'whichftelescopes in a socket arm 19' that 'i'spivotediat 20. to the base plate 21.

Any usuaLmean's; asa pin and slot arrange fment beused to maintain the proper relation between the firoller and the socket.

arm, and the basefplate has a stop arm'22 1 which holds 1 the roller in uplifted position when it struck by the brake .lever', and a spring 23' returnsthe roller to 'upright'positionfjaftertit' has been swung to dotted line position in Figure 7 "by "the brake lever on i an empty'car that may bejpassing in the diloaded car; I

The base] iaeei is ia tner a; the base ofthe rail R and for thisp'ur'pose is j fashionedj'with afbolt ar-ever. which the plate 25 is 'f itted againstthe rail flange, and a :nut'26 clamps the plate 25 0 11 'thefrail flangei Two Jtrip devices are emplloyed, onegbeinglocated at the top of the dewn-gmasto ap r the-brakes, and'the other locatedn'ear the bottom of the descent in "order torelease'pthe'brakes.

The car is equipped with one or more release levers27 adapted to encountera roller V 17, "and thelever 27 is designed to. rock the shaft e in direction opposite; to themov'e-' me-ntf imparted thereto the; brake lever.

r ctioii oppo'site to the ino'vement of the 16. For this purpose the release lever 27 which is pivoted at the under side of the car tary triplever 17, andthe brakes are applied. In Figure 2'the release lever 27 has contacted'with the. trip lever. 17, and the brakes are disengaged. v V U When lever 16 struck the'trip' lever 17 the shaft 5 and 'doublecrankfarm 7 were, rocked from position of Figure 2 to that-of Figure 1',"c'ausingthe couplings 1B and D to swing the brake shoes againstthe' wheels of the car.

"lVhenrelea se lever 27 struckthe'trip lever l7 the shaft and crank arrngwere rocked in the opposite direction, and couplings B and D therefore withdrew the 'shoes fronr the wheels. I

The operating movemeht of the-brake applying mechanism may be varied for the purpose of varyingthe degree of pressure of the brake shoes against-the wheels. For this-purpose I provide astop lug'8l fixed' on the 'hanger l andfa control arm 32, which'is fixed, to rock; with the shaftf5 is provided with flanged ends irr which'th'e stop bolts 33 are threaded. Thesebolts' are designed'to alternately contactwiththe'stop lug 31 and limit the rocking movement of the'shaft 5." Itwill be apparent that the range ofmovement' of the arm 32 be increased or diminished by adjustingthe bolts '33,. and therebythe pressure of the brake shoes may be controlled. 5 r The brake-shoes may be 'a'pplied either to retard the'progres's of the car,-or' the brakes may 'be'ap'plied' to stop the car if desired.

-Manually operated means are shown'fo'r applying-'01 releasing the. brakes, which meansinclude ahandrod34 located at one sideof the car and "pivoted to the crank arn'r30. In someinstahces this rod may be employed to apply or-release the brakes Having thus fully described my invention, what I claimas newzanddesiretosecure byLetters Patent is :"f 7

-1. The'combination'with a pair of brake shoesand 'a rockshaft of adouble brake on the shaft and resilient couplings between s'aid arm and shoes, a brake; lever on theshaft, a release. lever connected with the shaft, a hanger for the shaft and a: stop lug thereon, and a control leveron. the: shaft for co-actionwith said stop lug. v. v t 1 2. The combination witha pair. of brake shoes a rock'sh-aft and. resilient couplings between said shaft and shoes, of a brake lever, a release lever, a hanger for the shaft and a stop lug on the hanger, a control lever on the shaft having flanged ends, and bolts in said ends for co-action with said lug.

3. The combination in a railway car brake mechanism and operating means therefor, of a pair of brake shoes and an intermediate rock shaft, a double brake arm on the shaft, and resilient couplings between said shoes and arm comprising telescoping spring pressed bolts.

4:. The combination in a railway car brake mechanism and operating means therefor, of a pair of brake shoes and an intermediate rook shaft, a double brake arm on the shaft, and resilient couplings between the shoes and arm each comprising a tubular, threaded bolt and a telescoping bolt, a spring interposed between portions of said bolts, and an adjusting nut on the tubular bolts.

In testimony whereof I have afiixed my signature.

OLLIE P. PERRY.

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