US690484A

US690484A - Roller-bearing.

Info

Publication number: US690484A
Application number: US8098001A
Authority: US
Inventors: Frank W Thomas
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-11-04
Filing date: 1901-11-04
Publication date: 1902-01-07
Anticipated expiration: 1919-01-07

Description

FFICE.

PATENT .A FRANK W. THOMAS, OF TOLEDO, OHIO.

ROLLER- BEARING.

SPECIFICATON forming part of Letters Patent No. 690,484, dated. January '7, 1902.

Application filed November 4l 1901. Serial l\To. 80,980. (No model.) v

To all whom. i0' may concern:

Be it known that I, FRANK W. THOMAS, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, liaveinvented a new and'useful Improvement in Roller-Bearings for Oar-Axle Journals, of which the following is a specification.

Myinvention relates to a roller-bearing for car-axle journals, and has for its object to provide a bearing of the kind that will greatly reduce friction and that is ,adapted to allow lateral movement of the axle and journal within the journal-box. I accomplish this object by constructing a bearing as hereinafter' described and illustrated in the draw.

ings, in which-A Figure 1 is a vertical longitudinal section of a journal-box and the bearing in position therein on the journal. Fig. 2 is a horizontal section through the top of the journal-box, showing a top View of the bearing-cage. Fig. 3 is a cross-section through the box, bearing, and journal on line X X, Fig. l; and Fig. 4. is a view of the inner side of the front end plate of the bearing-cage, showing detachable wear-plate.

In the drawings, 1 designates the bearing in position on a car-axle journal 2, within a ear-axle journal-box 3 of the ordinary type and equipment, excepting that the size of the opening at the front end and the closure therefor is increased.

The bearing 1 comprises the cage 4 and a plurality of rollers 5 of equal length and diameter. The cage 4 is formed of an oblong rectangular metal block 6 of equal length with the journal and 4the front end closureplate 7. The top 8 of the cage is datand preferably provided with incuts to reduce the frictional area, and the sides 9 are outwardly curved lengthwise of the block, as shown in Fig. 2, increasing the width of the block from the ends toward the center until the sides at the widest part of the biock touch the side walls of the journal-box. The rear end 10 of the block 6 and outer face of the front end plate 7 are also curved outward"from side to side of the cage, increasing the length of the cage-from the sides toward the centers of the ends until the ends of the cage contact,'re spectively, with the inner rear wall 11 and the depending bearing-flange 12 of the jour- A cage and lightly with each other.

nal-box. The block Gis provided with a central'longitudinal bore 13, extending from the front end to the rear end wall 14, through which the bore is concentrically extended at at a reduced diameter, adapted to closely receive the journal, but without friction. The rear end wall 14 in its inner face is provided withv the circular groove 15, and opposite thereto, cut into the inner face of the end plate 7, is a circular groove 16, both grooves being of equal diameter and concentric with the bore' 13. The end plate 7 is secured to the front end of block (i by the bolts 17. Withiu'the circle of groove 16 the plate 7 is recessed to receive a detachable wearplate 18, adapted to contact with the outer end of the journal. The bore 13 is preferably provided with a steel bushing 19; but when the surface around the bore is case-hardened or chilled the bushing may be omitted. Rollers 5, which are preferably of hardened metal,

are of sutiicient number and diameter when longitudinally disposed around the journal within the cage to be in diametric contact with the journal and the inner face of the Each of said rollers is provided at the ends with axial spindles 19 of a diameter to freely enter the grooves l5 and 16, respectively, without contact with the sides of the grooves. lVhen the bearing thus constructed is removed from the journal, the spindles 19 pre vent the rollers from dropping out of the cage and retain them in position for mounting the bearing on the journal. By jacking up the car-truck until the bearing is free from the depending auge 12 of the journal-box the bearing may be removed from or mounted on the journal..

Jlt is apparent that by the construction shown and described the friction of the bearing will be greatly reduced and will be mainly that produced bythe temporary contact of the ends of the rollers with the ends of the cage and the end of the journal with the wearplate while the car is passing around curves. By curving the sides and ends of the bearing-cage, as shown and described, the bearing is adapted to allow lateral movement of the journal without looseness in the journalbox, and the axle is thereby relieved from a rigid alinement with its journal-boxes and is IOO niade free yto s's'iime an angle thereto, whereby when the ange of a Wheel of the axle contacts with the outer rail of a eurve the axle is thereby set at an angle to the truckframe adapted to move the wheels in the direction of the curve freely and with greatlyrednced strain.

In application Serial No. 43,706 I have shown, described, and claimed a similar bearing provided with an oil-chamber in the bottom of the cage and with means for supplying oil therefrom to the rollers within the cage. For all light-Weight ears, however, for which the bearing herein shown and described is designed, little, if any, lubricant is required, and this may be supplied through an Oil-hole at any suitable and convenient place in the Wall of the cage. In the form of my invention herein shown I have dispensed with the FRANK W. THOMAS.

Witnesses:

S. N. YOUNG, 'FRANK W. LONG.