Patented Nov. 23, 1937 TRUCK Tracy V. Buckwaltcr, Canton, Ohio, assignorto The Timken Roller Bearing Company', Canton, Ohio, a corporation oi' Ohio Application May 22, 1936, Serial No. 81,209

1 Claim. (Cl. 105-218) This invention 'relates principally to railway car trucks of the kind having a cushioning pad of rubber or the like interposed between the journal box and theequalizer plate to deaden noise, jar and vibration. The invention has for its lvprincipal objects to provide for ventilation and free working of the rubber, to prevent wear thereof, and to provide for holding the cushioning pad in proper position between the journal box and the equalizer plate. The invention consists in the cushioning pad and in the combinations and arrangements of parts hereinafter described and claimed. In the accompanying drawings, which form part of this specification and wherein like symbols refer to like parts wherever they occur,

Fig. 1 is a vertical section through a railway car truck embodying my invention, Vthe section being taken through the roller bearing journal 2o box at one end of one of the truck axles on the line I-I in Fig. 2,

Fig. 2 is a plan view, Fig. 3 is a vertical cross-section on the line 3-3 of Fig. 1; and

245 Fig. 4 is a perspective view of a cushioning pad.

1n the accompanying drawings, my invention is illustrated in connection with a railway car truck comprisingI a journal box or housing If 30 mounted on an axle 2 and provided at its sides ioning pad comprising a block 9 of rubber ory the like that is interposed between and vulcanized or otherwis'e secured to metallic top and 45 bottom plates I0 and II, respectively. The cushioning pad is provided with a series ot spaced parallel elongated slots l2 that extend vertically through the rubber block and the metallic top and bottom plates of said p'ad and are preferably 5 disposed transversely of the axle. The recess 4 Antifriction bearings, preferably a series f in the top of the journal box has a pair of lugs `or ribs I3 that project upwardly from the bottom thereof into the'lower portions of the two outermost slots I2 in the cushioning pad; and the equalizer plate is provided with a similar pair 5 of lugs I4 that project downwardly from the underside of said plate into the upper portions of said slots.

By the arrangement described, the cushioning pad serves to minimize jarring and j olting and 10 to deaden noiseyand it `also allows for free and unrestricted operation of the bearings in prop er alinement and thus prolongs the life thereof. The slots in the cushioning pad allow for ventilation and uniform iiow of the rubber under 15 load; and the metallic top and bottom plates of said pad prevent wear of said rubber. The upstanding lugs in the bottom of the recess in the top of the journal box extend into the slots in the cushioning pad and thus serve to properly center said pad in said recess; and the depending lugs on the underside of the equalizer plate engage said slots and thus serve to properly center said plate in said recess and on said cushioning pad. The cooperating lugs and slots also form quick detachable connections between the pad and the vjournal box and equalizer plate.

What I claim is:

On a car truck, a journal housing having a recess in the top thereof, a cushioning pad oi' 30 smaller size than said recess mounted entirely therein, and an equalizer plate having a portion of smaller size than said recess supported therein on said pad, said pad comprising thin Vmetallic top and bottom plates and a block of rubber l interposed between and vulcanized thereto, saidl pad being provided with a series of spaced parallel elongated slots that extend vertically therethrough from top to bottom thereof, said recess having a series of spaced parallel elongated ribs 40 that project upwardly from the bottom thereof and snugly t the lower portions of said slots and position said pad in said recess with a clearance around all its sides, said equalizer plate having a similar series of elongated ribs that depend therefrom and snugly fit the upper portion of said slots to position said equalizer plate on said pad and centrally of said recess with a. clearance around all its sides.

TRACY v. BUCKWALTER'. 50