IMPROVEMENTS IN ROLLER BEARINGS
Year: 1885

page_text: I GEORGE WASHINGTON SHOEMAKER, of Dalton in the County of Lackawana
and State of Pennsylvania in the United States of America, gentleman do hereby
declare the nature of my invention for IMPROVEMENTS IN ROLLER BEARINGS"
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 friction bearings and it consists in the
construction and novel arrangement of parts as will be hereinafter fully described
and particularly pointed out in the claim.
In the drawing Fig 1. is a vertical longitudinal sectional view Fig. 2 is a
vertical sectional view on the line x-x in Fig 1, the rollers being removed and
Fig 3 is a vertical sectional view, on the line y-y in Fig 1.
Referring by letter to the accompanying drawing A designates a straight
untapered axle-journal provided with an integral or fixed collar C and a threaded
end D.
The collar C is provided with a shoulder E and in its outer face said collar C is
provided with an annular groove E' having a rectangular portion E and a flaring
portion E³. G designates a sleeve or bow of a wheel. I designates the larger
rollers having tapered ends which fit the flaring portion E³ of the annular grooves E¹
at one end, the other ends of the rollers I fitting a groove E in an annular ring E
near the outer end of the axle journal. The groove E in the ring E' is similar in
construction to the annular groove E¹ it having a rectangular portion E³ and a
flaring portion E³.
Between each pair of rollers I is a rod or roller B¹. The ends of said rods or
rollers B¹ project beyond the rollers I and have their bearings in the rectangular
portions E of the annular grooves E¹.
Upon each one of the intermediate or smaller rollers B³, I provide a helical
steel spring wire H having the end coils drawn tightly around said rollers B¹ the
intermediate coils of said helical springs surrounding said rollers B₁ but not coming
in contact therewith. The axle is provided at the middle of its journal A with a
Beat J which is turned therein and this seat J is provided with a helical spring J¹
which springs out against the rollers I and prevents chattering. The helical
springs H on the rollers B¹ are designed to prevent chattering and where the helical
springs H and J¹ are used as herein illustrated and described, a practically noiseless
friction bearing is the result.

page_text: The sleeve G is slipped to place over the rollers I and B' and is held in place
by a threaded flanged nut L which screws on to the threaded end of the axle-
journal and holds the parts together. The rollers in this friction bearing are
case-hardened which prolongs their usefulness and lessens the friction.
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
I claim is.
The combination with the untapered case-hardened axle having threaded ends
and collars grooved in their opposing faces, of the case-hardened rolls I having
tapered ends, and the rollers B' having the helical springs H and untapered ends,
the helical spring J¹ in a seat J. in the axle, the case-hardened sleeve G and the
flanged nut L substantially as specified.