Year: 1899

page_text: Date of Application, 11th July, 1899-Accepted, 23rd Sept., 1899
I, BENJAMIN SMITH LAWSON, of Red Bank, in the County of Monmouth and
State of New Jersey, United States of America, Gentleman, do hereby declare
the nature of this invention and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:-
My invention relates to improvements in roller bearings and the object is to
simplify and improve the construction, and thereby increase the efficiency and
durability of the device. To these ends the invention consists in the construc-
tion, combination and arrangement of the several elements of the device, as
will be hereinafter more fully described and particularly pointed out in the
claims:
In the accompanying drawings the same reference characters indicate the same
parts of the invention.
Fig. 1 is a longitudinal section of a roller bearing embodying my invention.
Fig. 2 is a transverse section through, one of the retaining springs.
Fig. 3 is a perspective view of one of the spring rings.
A denotes the casing, provided with the removable bonnet a which in turn is
provided with the usual hinged door to permit access to the casing for inspection
or lubricating purposes. The bottom of the casing is formed with a lubricant
chamber a in which a suitable absorbent packing a³ is placed to retain the
lubricant.
B denotes the axle-journal, the outer end of which is formed with an annular
groove b, and b denotes a dust guard fixed to the inner end of the journal, so as
to encompass and close the contiguous open end of the casing and prevent the
entrance of foreign matter to the bearing.
Bi denotes a bearing sleeve which encompasses the journal B, and it is formed
at each end with a collar b³.
62, 63, denote annular grooves formed externally on the sleeve to receive the
split spring rings EE, the sections of which are held together by rivets or studs e.
C, C, denote cylindrical rollers, arranged parallel with each other, and form-
ing a continuous annular series, encompassing the sleeve and spring rings, the
tension of the latter being exerted radially outward to retain the rollers in contact
with the concentric bearing face a, forming the inner wall of the casing A.
It may here be noted that the roller-bearing face of the sleeve B₁ is that portion
extending between the grooves 6, 6, and is the portion with which the inner
faces of the rollers C, C, come in contact, whereas the outer faces of said rollers
have a bearing for their entire length on the inner face a of the box A..
As will be seen, the rollers approximate in length the distance between the
collars 6-9, the inner walls of which prevent any end play of the rollers, and
as the smaller bearing area of the sleeve is subordinate to the larger bearing area
of the box, the latter predominates and thus controls the movement of the rollers
and, in connection with the spring rings, insures a parallelism of the rollers when
in motion and incidentally reduces to a minimum the noise which does occur
when the rollers are loosely mounted between two bearing surfaces.

page_text: D represents a yoke, the horizontal arms of which are arranged to be seated in
correspondingly shaped recesses formed in the inner face of the bonnet, so as to
secure the yoke in place when the bonnet is secured on the box, and to permit
the removal of the yoke when the bonnet is detached.
The central portion of the yoke is preferably arch shaped to receive the yoke-
box d which in turn snugly fits the groove. in the outer end of the journal.
The inner parallel walls of the yoke D, engage the corresponding parallel outer
walls of the box, to prevent the latter rotating in the yoke.
The upper portion of the box d is formed with parallel radial flanges d' and da
which snugly encompass the parallel faces of the yoke, and likewise snugly fit the
parallel walls of the journal groove b, the flange preventing any inward longi-
tudinal or end movement of the journal, and the flange preventing any outward
end movement of the same, and this..latter flange d' of the box d, in addition
to forming an end bearing in one direction for the journal also extends across the
-face of the outer enil of the sleeva 13, which as shown in Fig.1 is aligned with
the inner wall of the journal groove 64, thus serving. the double purpose of pre-
venting any outward end movement of the sleeve or journal, while any movement
of the sleeve on the journal in the opposite direction is prevented by the dust
guard b.
In the drawings I have shown the split spring rings E, as being laminated, “but
any form of spring which will retain the rollers in contact with the annular bear-
ing face of the casing will answer the same purpose, and various other details of
construction which would readily-suggest themselves to a skilled' mechanic may
be employed without departing from the spirit of my invention.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed. I: declare that what
1 clain is
:.
1. In a roller bearing; a casing formed with an internal annular bearing face,
an annular series of cylindrical rollers, and a concentric sleeve encompassed by
said' series of rollers and having a roller bearing surface of a less length than the
roller bearing face of said casing, substantially, as and for the purpose set forth.
2. In a roller bearing, a casing formed with an internal annular bearing face,
an annular series of cylindrical rollers, a concentric sleeve, and spring rings inter-
posed between said sleeve and rollers, substantially as and for the purpose set
forth.
P5
3. In a roller bearing, a casing formed with an internal annular bearing face,
a concentrically grooved sleeve, a spring ring seated in said grooved sleeve, and
a series of bearing rollers-interposed between said spring ring and sleeve and the
bearing face of said casing, substantially as and for the purpose set forth.
4. In a roller bearing, a casing formed with an internal annular bearing face,
a sleeve having an external bearing face of a less area than the bearing face of
said casing, and formed with annular parallel collars, and a series of bearing
rollers confined between said collars and sleeve, and said casing, substantially as
and for the purpose set forth.