Car side bearing.

(Application filed Oct. 22, 1901.)

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THE NORRIS PETERS CO.. PHOTO-UTHO.. WASHINGTON. 0. C.

United States Patent Office.

WILLIAM A. PUNGS, OF DETROIT, MICHIGAN.

CAR SIDE BEARING.

SPECIFICATION forming· part of Letters Patent Mo. 710,609, dated October 7, 1902.

Application filed October 22, 1901. Serial Ho. 79,510. (No model,)

To all whom it may concern:

Be it known that Ϊ, William A. Pungs, a citizen of the United States, residing at Detroit, in the county of Wayne and State of 5 Michigan, have invented certain new and useful Improvements in Car Side Bearings, of which the following is a specification, reference being had therein to the accompanyingdrawings.

io It is the object of the invention to obtain a free-rolling bearing in which the rolls cannot become displaced and in which the points of contact are distributed over a comparatively large area.

It is also an object to obtain a simple and | inexpensive construction to build.

The invention therefore consists in the peculiar construction, arrangement, and combination of parts, as hereinafter described 20 and claimed.

In the drawings, Figure 1 is a plan of the lower or truck member of the bearing. Fig. 2 is a cross-section through the bearing as attached to the bolster and truck of the car.

Fig. 3 is a longitudinal section on line x x, Fig. 1. Fig. 4 illustrates a modification.

A represents the upper face of the truckframe of the car, and B the lower face of the bolster. As the general arrangement of the 30 side bearing in relation to the car is well known and forms no part of the present invention, the truck and bolster are not further illustrated in the drawings.

C is the supporting member of the bearing 35 which carries the rolls and which is preferably secured to the truck-frame. As shown, this member comprises a block preferably formed of cast metal and having apertured ears a, by means of which it may be bolted 40 or otherwise secured to the truck-frame. In plan this block is preferably of segmental shape, the radius of the curve being the distance from the center to the king-bolt of the truck.

D is a channel formed in the block C and extending longitudinally around the same. This channel forms an endless race in which a series of free rolls E are placed and adapted to travel. As shown in Figs. 1 and 3, the 50 rolls E are in the form of balls and are held from disengagement in the channels D by overhanging lips or flanges b at the outer edges of the channels, which reduces their width to less than the diameter of the balls.

The inner face of the channel is also prefer- 55 ably formed of V-shaped cross - section, so as to form the two points of contact c and d for the balls. The block C is preferably provided with two channels D, arranged parallel to each other, so as to form two rows of balls 60 for contacting with the cooperating member F of the bearing. The races on the upper face of the block are of a curve having its center in the king-bolt of the truck.

The member F is secured to the bolster of 65 the car, and in order that it may be in perfect contact with all the balls carried by the member C it is preferably attached to the bolster by a universal joint. As shown, this is formed by providing a plate or member .G, 70 which is directly secured to the bolster, which member has arranged centrally thereof a ball or spherical projection H, which engages a corresponding socket formed on the upper face of the member F. In order to prevent 75 turning of the plate F, depending lugs, or flanges I are provided on the plate G, which extend in adjacence to the edges of the plate F.

The construction being as shown and de- 80 scribed, in operation whenever the plate F bears against the balls E and is movedin relation to the member C the balls will roll in the races D, causing the movement of the entire series of balls around said races. Thus 85 the balls are always in position for bearing against the plate F, and it is immaterial whether the movement of said plate is large or small or in either direction, as in every position and in every movement the balls will 90 freely roll in contact with the plate. In order to permit of engaging the balls with the races or removing them in case of breakage, a portion of the overhanging flanges or lips b is cut away, so as to form an entering slot 95 for the balls, and to prevent the accidental disengagement of the balls this entering slot may be filled by the detachable member K.

In Fig. 41 have shown a modification which in place of balls rollers E'are employed, which 100 are provided with projecting pintles e, adapted to engage with grooves f, formed in the sides of the ball-races.