US1765705A - Bearing for railway cars and the like - Google Patents

Description

June 24, 1930. c. H. SMITH 1,765,705

BEARING FOR RAILWAY CARS AND THE LIKE Filed May 18, 192 2 Sheets-Sheet 1 HUHWHWHHH\HHWWWWI INVENTOR Charles Henry Smith his ATTORNEY June 24, 1930; c, H, SMITH 1,765,705

BEARING FOR RAILWAY CARS AND THE LIKE Filed May 18, 1927 2 Sheets-Sheet 2 INVENTOR 6510M; es Henry Smith BY 619W his ATT ORNEY Patented June 24, 1930' UNITED STATES PATENT O C 1 CHARLES HENRY SMITH, OF CHELMSFORD, ENGLAND, ASSIGNOR TO NORMA HOFFMAN- BEARINGS CORPORATION, OF STAMFORD,

YORK

CONNECTICUT, A CORPORATION OF NEW BEARING non nmwax cans AND THE LIKE Application filed May 18, 1927, Serial No. 192,197, and in Great Britain July 21,- 1928.

This invention relates to improvements in bearings for railway cars and the like, and more fparticularly to axle boxes for housing antiriction bearings.

The primary object of the invention is to enable the .bearing to be readily removed from the axle and the attendant mechanism without requiring that the car be elevated.

Another object of the invention is to facilitate the rem'ovgl of the bearing without disturbing the fixtures of the journal boxes, springs or other fittings, such as current collector bars and the like, which ma be attached to or carried by the car and.

A further ob'ect of the invention is to securely lock the caring in place so that daner of accidental removal ofthe parts may e eliminated.

p A feature of the present invention is the external housing, which is slidably fitted in the hornblock castin of the car truck for the purpose of remova ly supporting the bearing in lace.

, nother' feature of: the invention is the removable connection between the axle and the outer thrust element of the bearing, which firmly locks the bearing in place on the axle and in the horn block castin p A further feature'of the invention is the action of the extractor means on the end of the axle, causing withdrawal of the bearin when it is to be removed for repairs or a justment. I

With the above and other objects in view, the invention consists of the novel construction, combination and arrangement of parts, which will'be fully set forth in the following specification, claimed and illustrated in the v accompanying drawings, in which:

Fig. 1 is a fragmentary side view of a car truck illustrating the same equipped with this'improved bearing, a

Fig. 2 is an enlarged horizontal sectional view taken on line 22 of Fig. 1, and

Fig.3 is a vertical sectional view taken on line 33 of Fig. 1 illustrating the extraction .means in detail with the bearing partially removed.

Referring to the drawings in detail, the truck 10 is provided with the customary bifurcated'horn plate between the two limbs of. which is slidably fitted the horn late castin 11. This casting comprises a substantia y rectan ular box provided at its inner and outer en s with angular flanges 12, which partially overlie o posite side faces of the horn plate 10 and orm guides to retain the horn plate casting in' place and yet permit the same to move vertically between the limbs of the horn plate. Wear plates 13 are interposed between the horn late-casting 11 and the two limbs of the bicated horn plate. and depending from the under-side of said casting is a lyoke 14: in which the springs of the car true i are seated. This yoke is substantially U-shaped as shown the bight portion oi the yoke forms the seat in which the sprin rests. Formed longitudinally throu h t e horn plate casting 11 is a cylindrical ore 15 for the reception of the bearing, to be more fully hereinafter described.

The bearing above referred to a bearing housing 16 of a diameter tosnugly fit the openin 15 as will be clearly seen upon reference to t e drawings. Seated against a shoulder 17 formed near the inner end of the housing 16 is the race 18 of-the innermost bearing member. A similar race 19 engages against a shoulder 20 formed near the outer end of the housing 16 and this race 19 is retained in proper osition by means of the race 21 of a ball t rust or location bearing. The inner end of the housin 16 is provided with a. dust ea, or ring 22 which engages the outer edge of t e race 18 and secures the same in Fig. 3 and in place against the shoulder 17.

comprises crates with the dust cap 22 in excluding foreign matter from the interior of the bearing. Seated against a shoulder 27 formed near the inner end of the sleeve is a race 28 and interposed between the race 28 and the race 18 are the rollers 29 of the innermost roller bearing. A spacing bushing 30 extends around the sleeve 25 and its inner end engages the race 28 while its outer end forms a stop against which the inner end of the race 31v is seated. Like the inner bearing member, the races 19 and 31 are spaced by rollers 32 to rovide an anti-friction roller bearing mem her at the outer end of the device. Seated against the outer end of the race 31 is the race 33 of the ball thrust bearing abovementioned.

In order to retain the parts in-assembled position the outer end of the axle is formed with screw threads 34, upon which the retaining nut 35 is threaded. This nut is of sufficient diameter to engage the outer end of the race 33 and prevent longitudinal displacement thereof. In order to secure the nut against accidental displacement, the axle is provided with a relatively short cylindrical extension 36, which is formed with a transverse groove 37 for the reception of thelock bar 38, which in turn is secured to the nut by suitable screws 39. Cap screws 41 enter threaded sockets in the horn plate casting 11 through openingsformed in the flange 42 which in turn is formed at the outer end of the housing 15, and these screws 41 lock the parts against relative movement.

A dust cap or cover is removably secured to the outer end of the housing 16 as will be readily apparent upon reference to the drawings, and is independently removable to give access to the interior of the bearing without requiring'its withdrawal from the horn plate casting.

In order to remove the hearing from the axle'and from its position within the horn plate casting, the nut 35 is removed from the end of the axle, after which the extraction means is threaded into the internally screw threaded socket 43, formed at the outer end of the sleeve 25. This extraction device comprises a head 44 provided with an externally screw threaded tubular extension 45, which fits into the socket 43 as clearly illustrated in Fig. 3. Formed on the head 44 and extending into the extension 45 is a pad 46 for engagement against the grooved end of the axle 24. It will thus be seen'that by continued turning movement of the head 44 after the pad 46 has come into engagement with the bearing as a unit may be Wholly withdrawn from its position in the horn plate casting and such repairs or inspection as may be required may be readily accomplished. Furthermore, a substitute bearing may be readily placed in position. and the car need not remain out of service for any protracted period.

While in the foregoing there has been shown and described the preferred embodimerit of this invention, it is to be understood that minor changes in the details of construction, combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as claimed.

I claim:

1. In a bearing for the purpose set forth, consisting of a supporting structure which receives an axle and a housing removably fitting therein around the axle, inner and outer shoulders formed .on. the housing and extend ing, respectively, outwardly away from and inwardly toward the axle, a sleeve surrounding the axle within the housing and having an interlocking connection with the housing, anti-friction bearing devices arranged between the sleeve and housing at opposite sides of said shoulders, the axle having a threaded outer end portion and the sleeve and axle tapering toward said'portion, providing for the removal of the sleeve, housing and bearing devices as an unitary structure, the interior of the sleeve having at its outer end an open recess spaced from the axle threaded portion, a retaining device received in said recess and threadedly engaged with said axle threaded portion, and a part on said retaning device constituting an abutment for'holding such unitary structure in place.

' 2. Ina bearing for the purpose set forth, consisting of a supporting structure which receives an axle and a housing'removably fitting therein around the axle and provided with a flange at its outer end, inner and outer shoulders formed on the housing and extending, respectively, outwardly away from and inwardly toward the axle, a sleeve surrounding the axle within the housing and having an interlocking connection with the housing, anti-friction bearing devices arranged between the sleeve and housing at opposite sides of said shoulders, the axle having a threaded outer end portion and the sleeve and axle tapering toward said portion, providing for the weaves "removal of the sleeve, housing and bearing devices as an unitary structure, the interior of the sleeve having at its outer end an open recess spaced from the axle threaded portion,

a retaining device received in said recess and threadedly engaged with said axle threaded portion, a part on'said retaining device constituting an abutment for holding such unitary structure in place, and cap means envelo ing said part andremovably secured to the ange at the outer end of the housing.

In testimony that I claim the foregoing as my invention, I have signed my name hereto.

CHARLES HENRY SMITH.

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