US1808839A - Side-bearings - Google Patents

Description

June 9, 1931.

D. C. DAVIS SIDE BEARINGS Filed April 18, 1929 Patented June 9,'1931 DONALD C. DAVIS, DECEASED, LATE OF narrar BUFFALO, NEVI' YORK, BY LDU BRADSHW,

nxncufrarx, on BUFFALO, New Yoan, .essreivoa 'ro Tira sont-n conectan contrarre', vor naw Yon-K, n. Y., A conroaarroir oF MARYLAND 'sinn-Bannieres Application led April 18,

The invention relates to'side bearingsand has for one of its objects to provide strong and durable means for eiiicientlyV cushioning and absorbing shocks transmitted to the '5 truck bolster' from the car body. Y

A primary feature Vof the invention consists in providing a side bearing` with a plurality of movable wedge shoes and in oomd bining therewith a wedge block for actuating them, said shoes having portions normally disposed on opposite sides of the apex of said wedge block;

A still further feature of the. invention conm sists in constructing a sideA bearing with a 15'plurality of oppositely movable shoes slidably mounted in a housing'and in associating therewith a wedge block for actuating the shoes, the latter having a ve 1tically overlapping` portion and one shoe being fashioned aowith a projection and the other with a recess for receiving said projection.

Other and more specific features residing in advantageous combinations and relations 'M of parts will hereinafter appear and be a5 `pointed out in the claims.

In the drawingsillustrating a preferred embodiment of the invention- Figure 1 is a plan View of the improved side bearing, parts kthereof being broken away. 3o Figure 2 is a central transversesectional View of the side bearing7 the wedge shoes being shown in elevation. y

Figure 3 is a plan view of the wedge shoes Min assembled and operative position.

the shoes.

In the drawings 1 indicates a housing of box-like form having side Walls 2 and a base plate 3. The housing may be advantageously provided with laterally projecting lugs or feet 1 suitably apertured as at 5 to receive bolts, rivets or the like (not shown) for securing the housing to a truck bolster of any suitable design. v j

Disposed within the housing 1 are a plurality of wedge members or shoestl and 7, respectively, which, upon being actuateth are adapted to move transversely of the housing ,in engagement with the base plate 3 thereof.

Each of the shoes is substantially triangular e5 Figure et is a perspective view of eachl ofv Vwardly of itsside 'edges' andthe width and ieee. serial no. ssaoai.

in section having a downwardly inclined bearing face 8. The opposite lower corners of the block 6 are cut away as at 9 forming a projection 10 andthe central portion of the shoe is cut away as at 11 to receive the projection 10. rlhe walls 12 and 13 bounding the cutout portion 9 of the block 6 are respectively substantially vertical and inclined and the latter lies in afplane substantially parallel with the inclined face 8 ofthe block 7. Similarly, the walls 14 and 15 bounding the cutout portion 11 of the block vZ are respectively vertical and inclined and the wall 155V is disposed in a'plane substantially parallel to that of the face 8 of the block 6. Thus it will be seen, as clearly shown in Figures 2 and 3.of thedrawings, that when the wedge shoes are properly assembled the inclined bearing faces 8V extended on opposite sides of the point at which they intersect each other and in addition to having portions overlapping each other vertically they have portions overlapping eachother transversely Aof their direction of movement. f v

. A wedge block or member 16 is employed for actuating the shoes by moving them ink opposite directions. rlhe lower portion of the block 16 is provided with downwardly inclined converging bearing'faces 17 adapted to be disposed in plancs'parallel with those ofv the bearing faces 8 of the slices 5 and 'Z forl cooperating therewith. Each' of the bearing faces 17 is preferably of a width substantially equal to that portion of thebearing face of each of the shoes between the rpoint of intersection of the latter and the upper edge thereof.l The faces 17 respectively'terminate in substantially vertical faces 18 which merge into the top portion 19 of thewedge block inlength of thisV top portion fof the bloolr is slightly less than the corresponding dimensions ofthe housing to permit itto move into and out'of the latter. stood that the top portion 19 ofthe wedge block cooperates with the usual member (not shown) carried by the car body bolster. i

A plurality of plate springs 20 arefinter.- posed between the side walls 2 of the housing and the adjacent lwedge shoes for normally lt is of course under-l opposing movement of the latter and for returning them to operative position after being actuated by the wedge block 16. A removable wear plate 21 of any desirable material may be inserted in the base plate 3 of the housing and the latter is provided with an aperture 22 for receiving a suitable tool which may be employed for removing the wear plate after the same has become worn.

Due to the form of the wedge shoes 6 and T and the manner with which they cooperate with the wedge block 16, the inclined faces of the shoes are normally disposed on opposite sides of the apex of the block. Thus it will be seen that the center of mass of the slices is brought more nearly into coincidence with a line passing through the apex of the wedge block and normal to the plane upon which the shoes move and that portions of the surfaces 17 immediately adj acent the apex of the block are always in engagement with portions of the surfaces 8 of the wedge shoes.

vVTi/*hen a force is imparted to the wedge blocl; 16 tending to move it downwardly it is opposed by frictional forces generated between the wear plate 21 and the bases of the shoes, bet-Ween the cooperating bearing faces of the shoes and blocks, 8 and i7 respectively, and between the plate springs 20. Movement of the shoes in opposite directions is also counteracted by the inherent resiliency of the spring plates 20.

F rom the foregoing it will be perceived that rugged and efficient means is provided for effectively absorbing and cushioning any shocks which may be transmitted from the body bolster to the side bearings.

Vilhat is claimed is:

l. A side bearing for railway cars involving a housing, a plurality of wedge shoes slidably mounted in said housing, a wedge block for actuating said shoes, and resilient means for opposing movement of said shoes, the latter having portions normally disposed on opposite sides of the apex of said wedge block. Y

2. A side bearing for railway cars involving a housing, a plurality of wedge shoes slidably mounted in said housing, a wedge block for actuating said shoes, an'dresilient means for opposing movement of said shoes, the latter having portions overlapping each other transversely yof their direction of movement.

3.1i side bearing for railway cars involving a housing, a plurality of oppositely movable shoes slidably mounted upon the base of said housing, said shoes having vertically overlapping portions, one being fashioned with a projection and the other with a recess for receiving said projection, a wedge block for actuating said shoes, and means for opposing movement of said shoes.

4:.' A side bearing for railway cars involving a box-like housing, a plurality of shoes mounted within the housing and slidable along the base thereof, said shoes having oppositely inclined faces, a wedge block having portions respectively cooperable with the inclined faces of said wedge shoes for actuating them and each of said faces being normally disposed on opposite sides of the apex of said wedge block, and plate spring members for opposing movement of, said shoes.

5. A side bearing for railway vehicles comprising a housing with a base plate and upstanding side walls, a plurality of wedge shoes slidably mounted above said base plate, said slices being formed respectively with a projection and a recess for receiving said projection, said shoes providing inclined friction surfaces which are continued on the projection of one shoe and on the portions of the other shoe on either side of said projection, a wedge block provided with lower inclined surfaces engaging the friction surfaces on the shoes, and vresilient means disposed between said shoes and the side walls of the housing for opposing outward movement of the former.

1n testimony whereof 1 afX my signature.

LOU BRADSHAl/V, Eecatm' 0f tite Estate of Donald U. Danis,

Deceased.

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