US645299A - Antifriction-bearing. - Google Patents

Description

No. 645,299. Patented Mar. I3, |900. I. MOSS.

ANTIFRICTIUN BEARING.

(Application led Nov. 8. 1899.)

UNITED STATES-y 'PATENT FFICE.

ISIDOR MOSS, OF IVALTIIAM, MASSACHUSETTS.

ANTlFRlCTlON-BEA'RING.

SPECIFICATION forming part of Letters Patent No. 645,299, dated March 13, 1900.

Appl'ication 51e@ November 3, 1399, serial No. 736,237. (No model.)

T @ZZ whom, it nitty concer/1.:

Be it known that I, IsIDoRA Moss, a citizen of the United States, residing at Waltham, county of Middlesex, State of Massachusetts, have invented an Improvement in Antifriction-Bearings, of which the following description, in connection with the accompanying drawings, is a specification, like letters and iigures on the drawings representing like parts.

This invention relates to 'an antifrictionbearing; and the object of the invention is to provide an improved device of this character which is simple in construction, easy running, and wherein the friction between the several engaging parts is reduced tothe smallest possible extent, thereby increasing the life of the bearing.

In the drawings, Figure 1 is a longitudinal sectional elevation of an antifriction-bearing constructed in accordance with my invention in the preferred embodiment thereof. Fig. 2 is a transverse section taken in the line 2 2, Fig. 1. Fig. 3 is a similar view, the section being taken in the line 3 3 on said Fig. 1. Fig. 4. is a view of the shaft, a roller, and separator laid out fiat. Fig. 5 is a view corresponding to Fig. 1, showing one end only of a modified type of bearing. Fig. 6 is a transverse section in the line 6 6, Fig. 5; and Fig. 7 is a detail in perspective of one-half of the roller-separator support.

The antifriction bearing illustrated includes a shaft or analogous support and a casing surrounding the same and a series of rollers, the working portions of which are adapted to run against the shaft and the casing, respectively, and either of the last-mentioned parts may be rotative, although I am enabled to secure a very important advantage by rotating the casing or barrel. (Illustrated in Figs. 1, 2, and 3.) Referring now to said figures, the shaft illustrated therein is denoted by S, and the casing or barrel surrounding the same and inclosing or housing the several rollers and their parts is denoted by C, and both of these may be, except as hereinafter specified, of any suitable kind. The shaft or support S passes freely through substantially-central openings in the caps 12 and 12', having inturned flanges 13 and 13' screw-threaded within the opposite ends of the casing. The rollers, which travel in contact, respectively, with the shaft andthe casing are denoted by R, and each of them includes a comparatively-long shank or body 14, provided at its ends with enlargedheads 15 and 15', the heads being separated from each other and sustained by the annular shoulders or enlargements 16 and 16 on said shaft and situated within the casing C near the opposite ends thereof. The heads also engage the inner walls of the fianges 13 and 13', and the axes of the rollers and separators and shaft are in parallelism.

The rollers R are spaced or separated to decrease the friction between the parts, and for this purpose l have represented a series of roller-separators A, each separator coperating with the adjacent rollers,between which it is placed.

Referring to Figs. 2 and 3, where the rollers and their roller separators are shown arranged, respectively, in circular form, it will be seen that the axes of the separators are disposed within a circle intersecting the aires of the rollers, by reason of which the rollers themselves serve as a means for preventing the separators from being forced radially outward, and foi` preventing inward movement of said separators I have illustrated independent means, to be hereinafter more particularly described.

The roller-separators A (shown in Fig. 1) are somewhat longer than the rollers which they space, and they are supported at a point beyond'the working faces of the rollers, such support in the present case serving to prevent the inward movement of said separators, the outward movement being prevented by the cooperating rollers.

The roller-separators A each include a body, as 17, which, like those of the rollers, are cylindrical. The bodies 17 of the separators are provided with the reduced necks 2O and 20', adapted to fit against and travel upon the inturned sleeves 22 and 22', extending inward from the caps 12 and 12. The working faces of said annular sleeves 22 and 22 are concentric with the axis of the shaft, and said shaft passes through the same. Vhen the casing C is rotated, the working faces of the sleeves 22 and 22' will be moved in the same direction and also in the same direction with the rollers supported thereagainst, as is also IOO the case with the modified form of device hereinafter set forth, by reason of which the motion of the separators is aided, as would not be the case were the support stationary or fixed.

I provide means for preventing endwise movement of the rollers and the roller-separators.

The bearing portions 16 and 16 of the shaft are furnished upon their inner sides with the annular projections 4:0 and 40', the surfaces of which are rounded, as will be seen upon inspection of Figs. 1 and 4.

The conical annular projections 4l and 4l upon the rollers R are adapted to cooperate with said annular projections 40 and 40', it being seen that the projections 4l and Ll1 are located between the projections 40 and 40', so that endwise movement of the rollers relative to the shaft is not possible. v

What is shown as the double-beveled faces of the projections il and 4l' bear in contact with the rounded faces of the projections 40 and 40' at a point in line with the plane of contact between the shaft and the rollers and at the same radial distance from the axis of said shaft as said plane of contact, so that the friction at this place is materially reduced over that kind of a bearing having two annular shoulders or tongues whose point of engagement is at one side of such a plane. l

The separators A are provided with annular projections 42 and 42', the outer faces of which are rounded and which bear against the inner sloping faces of the conical projections il and 41 at points in line with the plane of contact between said separators and rollers, as clearly shown in Fig. 4, by reasonof which the advantageous result just mentioned is secured between the rollers and their separators.

The construction of the rollers and the intermediate separators shown in Figs. 4 to 6, inclusive, is the same as that represented in the preceding views, and hence I denote the corresponding parts with the same reference characters, and in addition to this I will now proceed to describe the different embodiments.

Each of the heads l5 of the rollers R is provided With an outwardly-disposed central projection 30, and the latter have enlarged heads 3l, adapted to travel against the inner faces of the annular inturned flanges or runways 33 of the cages B, the latter having central openings 34, through which the shaft S passes. The opposite ends of the'roller-separators A roll uponthe inner faces of the annular flanges 35, concentric with the first-mentioned annular iianges and surrounding the openings 34. The flanges 35 are located inside the flanges 33. When the rollers are rotated, the heads 3l, by engaging the inner surfaces of the flanges 33,cause the cages B to rotate,whereby the outer faces of the inner flanges 35 will be caused to roll under the roller-separators, and thereby aid the movement of said separators and not act as a resistance to the free motion thereof, as is the case in existing bearings of this type. The flanges 33 have inturned nan ges 36, which engage the heads 3l, so as to prevent endwise movement of the roller-separators.

I have only represented a portion or half of the modified form of device, but have described the entire construction, using the different terms in the plural where generally only one is seen.

The invention is not limited to the precise parts previously set forth, for these may be variously modified within the scope of the accompanying claims.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. An antifriction bearing comprising a shaft, a casing, a series of rollers bearing against the shaft and casing, roller-separators between'the rollers, and the axes of the same being within a circle intersecting the axes of the rollers, and each two of the latter serving to hold the intermediate separator against outward movement, and independent means to hold said separators against inward movement. A

2. An vantifriction-bearing comprising a shaft, a casing, a series of rollers bearing against the shaft and casing, roller-separators between the rollers, and the axes of the same being within a circle intersecting the axes of the rollers, and each two of the latter serving to hold the intermediate separator against outward movement, and independent means rotative with the casing to hold said separators against inward movement.

3. An antifriction-bearing comprising a shaft, a casing, a series of rollers bearing against the shaft and casing, the roller-separators, between the rollers, and the axes of the same being within a circle intersecting the axes of the rollers, and each two of the latter serving to hold the intermediate separator against outward movement, and caps fitted within the casing, to support said separators and to hold the same against inward movement.

4. An antifriction-bearing comprising a shaft, a casing, a series of rollers bearing against the shaft and casing, roller-separa; tors between the rollers, and the axes of the same being within a circle intersecting the axes of the rollers, and each two of the latter serving to hold the intermediate separator against outward movement,caps fitted within the casing provided with annular sleeves through which said shaft passes and which support the ends of the separators.

5. An antifriction-bearing comprising a casing and a shaft, the rollers bearing against the shaft and casing, roller-separators for the rollers, projections upon the rollers and shaft touching at points in line with the planes of contact between the rollers and the shaft and such points and planes of contact being the same radial distance from the axis of the IOO izo

casing, a shaft extending into said casing, a-

series of rollers mounted for movement upon the shaft, projections upon the rollers and shaft touching at points in line with the planes of contact between the rollers and the shaft, and roller-separators engaging the rollers and having projections in contact With those of the rollers at points in line with the planes of contact between said rollers and roller-separators.

8. An antifriction-bearing comprising a casing, a shaft, a series of rollers mounted for movement upon the shaft, projections upon the rollers and shaft, the projections of one of said series of parts having rounded faces,'while the faces upon the other series of parts are beveled upon straight lines, and the series of projections upon the rollers being adapted to bear against those upon the shaft, at points in line with the planes of contact between the rollers and shaft.

9. An antifriction-bearing comprising a shaft, a casing, a series of rollers bearing against the shaft and casing, roller-separators between the rollers, the rollers serving to hold the intermediate separators against movement in one direction, and independent means to hold said roller-separators against movement in the opposite direction.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

ISIDOR MOSS. Witnesses:

HEATH SUTHERLAND, JOHN C. EDWARDS.

Images