US1921046A - Draft gear - Google Patents

Description

Aug.8,1933.4 j D, 1;-, SPROUL 1,921,046

DRAFT GEAR Filed July 30, 1931 JZ n i l l l l n I ,/JL y .i l2 l y A? slm V14 sz-\ v" l l l lll/lll @www aman-M .UNITED STATES DRAFT GEAR Donald F. Sproul, Chicago, Ill., assigner to Cardwell Westinghouse Company, a Corporan tion of Delaware Application July 30, 1931. Serial No. 5545139v 6 Claims. (Cl. 213--38) The invention relates particularly to that type having the form of a truncated cone, and the of draft gear in which the spring resistance i bearing face of the member 2o, with which the mounted on a transverse rod; and its object is to spring seat engages, is provided with a complef maintain the alignment of the spring seats with mentary recess 27. The members 20, 25, being 5 the gear elements with which they directly coalways under pressure, the perfect alignment of 60 operate. their apertures is thereby maintained and A preferred embodiment of the invention is smoothness of action, both on compression and hereinafter described, and is illustrated in the release of the gear, is obtained, The bearing accompanying drawing in which faces of the members 20 and 25 extend laterally lo Fig. 1 is a detail plan section of the draft sills beyond the boss 26 and recess 27, and are hat and 65 of a railway car and of the draft'gear applied normal to the axis of the rod 21. These flat faces thereto; cooperate with the boss and socket in insuring a Figs. 2 and 3 are views in perspective of one of true centering of theineinbers. the draft gear elements and of the spring seat The invention is not limited to the rueconiwhich cooperates therewith. cal forni of the boss 26 and socket 27, it being im- 7'0 The draft sills of a car are represented at l0, portant only 'that the boss toward the apex, 11, and carry draft andbufng lugs 12, 13, with whether its sides'be straight or curved. which the followers 14, 15, cooperate. I claim as my inventionW The invention is disclosed in connectionwith 1. in a draft gear, in combination, a pair of the well known Cardwell draft gear, comprising opposed followers, oooperatinCT wedging elements 75* the two chambered followers le, 15; a pair of triinterposed between the followers and including a angular wedge- blocks 16, 17, seated against the pair of laterally movable members, a straining inner face of the end wall of each follower; a cenrod extending loosely through Athe last-named tral wedge member 18, cooperating with the members, springs mounted on the outer endporblocks of each pair 16, 17; a pair of outer wedgetions of the rod, seats carried by the rod for the 30., blOCkS 19y 20, COOpela'Ilg, IeSDSC'EVely, with the outer ends of the springs, and spring seats for outer faces of the triangular blocks; a transverse the inner ends of the springs and having slid-v lOd 21 @Xtendlg lllOLlgh apertures in the merning engagement with the rod and bearing on the beIS 18, 19 and 20, and th@ draft S1115; Springs 22, laterally movable wedge members, the engaging side of the sills, and each reacting between a nut tapering boss on one thereof and a complemen- 24 0n the Outer @Dd Of the IOd and a Spring Seat tary socket in the other whereby the apertures 25 haVIlg bearing UDCH D118 membelS 19, 20- in the engaging elements are brought into align- Upon compression of the gear the wedge-blocks ment,

16, 17, of eachpair are spread apart by the wedgs, in a draft gear, in combination, a pair of sov 111g aCOIl 0f '611B Central member 13, and the opposed followers, cooperating wedging elementsl members 19, 20, ae Spread apart by the Wed-sing interposed` between the followers and including a aCtOIl Of the lallgulal blOCkS, agaDSt the 1^@- pair of laterally movable members, a straining Sstane 0f the Springs 22, 23- The membls 19, rod extending loosely through the last-named 20, and the Spring SeatS 25 Slide outwardly 11.13011 members, springs mounted on the outer end por- 95l lthe rod and, in order to provide freedom of actions of the rod, seats carried by the rod for the tion, have a loose fit thereupon, outer ends of the springs, and spring seats for In the exigencies of service the apertures of the inner ends of the springs and having sliding the members 19, 20, and the spring seats freengagement with the rod and bearing on the lat- -quently get out of line, one of these cooperating erally movable wedge members, the engaging 100 members sliding frictionally along one side of the faces of such elements comprising a boss having rod and the other along the other side thereof, the forni of an annular truncated cone on one with the result that the wear upon the rod is unthereof and a complementary socket in the other evenly distributed, shoulders thereon are formed whereby the apertures in the engaging elements which interfere with the free action of the gear are brought into alignment. 105

Aand tend to prevent complete release. 3. In a draft gear, in combination, a pair of The object of the present invention is to mainopposed followers, cooperating wedging elements tain the apertures of these two elements in strict interposed between the followers and including alignment, and to that end the bearing face of the a pair of laterally movable members, a straining `spring seat 25 is provided with an annular boss 26, rod extending loosely through the Vlast-named llo 23, SleeVed UDCH the @11d portions of the rod out` faces of such elements comprising an annular S51v members, springs mounted on the outer end portions of the rod, seats carried by the rod for the outer ends of the springs, and spring seats for the inner ends of the springs and having sliding engagement with the rod and bearing on the laterally movable wedge members, the engaging faces of such elements comprising a boss having the form of an annular truncated cone formed on the spring seat and a complementary socket in the Wedge element whereby the apertures in the engaging elements are brought into alignment.

4. In a draft gear, in combination, a pair of opposed followers, cooperating wedging elements interposed between the followers and including a pair of laterally movable members, a straining rod extending loosely through the last-named members, springs mounted on the outer end portions of the rod, seats carried by the rod for the outer ends of the springs, spring seats for the inner ends of the springs and having sliding engagement with the rod and bearing on the laterally movable Wedge members, the engaging faces of such elements comprising an annular tapering boss on one thereof and a complementary socket in the other, and ilat sections extending laterally from the boss and socket whereby the apertures in the engaging elements are brought into alignment.

5. A draft gear element comprising a tubular body faced at one end to form a seat for a spring, and having a radial flange adjacent its opposite end, and being tapered beyond such flange.

6. A draft gear element comprising a tubular body faced at one end to form a seat for a spring and having a radial flange adjacent its opposite end, the portion beyond the ange being of progressively decreasing diameter.

DONALD F. SPROUL.

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