Improvements in and relating to Ball Bearings for Sheaves for Pulleys and the like.
Year: 1894

page_text: Date of Application, 12th June, 1894-Accepted, 14th July, 1894
Improvements in and relating to Ball Bearings for Sheaves for
Pulleys and the like.
I, MICHAEL WOGAN, Boatswain, in the service of the Navy of the United
States Government, and temporarily residing at Newport, in the County of
Newport, and State of Rhode Island, United States of America 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 :-
This invention contemplates certain new and useful improvements in roller-
bearings and is specially designed to be used in sheaves for pulleys and the like.
The object of the invention is to provide an improved roller-bearing which can
be readily applied to a sheave-wheel and which shall possess advantages in point of
simplicity, inexpensiveness and general efficiency.
The invention comprises a ring or cylinder having an inner circumferential
flange, the inner edge of which is flared in opposite directions forming circular
shoulders, and two sets of balls or rollers held loose against said flange by cap-
plates attached to said ring or cylinder, said circular shoulders serving to retain
said rollers in place, substantially as hereinafter fully set forth and particularly
pointed out in the claims.
In the accompanying drawing:
:-
Figure 1 is a transverse sectional view and Figure 2 is an elevation with one of
the cap-plates removed.
Referring to the drawing, A designates a ring or cylinder having a continuous.
flange a extending from its inner circumference. The extreme inner edge of this
flange is flared in opposite directions, forming inclined shoulders a¹. The flange a
divides the inner portion of the ring into two separate chambers, and in each of
the latter is placed a continuous ring B, which rings bear against the inner
walls of said chambers. These rings are preferably made of bronze or some
suitable material.
C, C, designate two cap-plates which are attached to the ends of ring A. by
screws b. The cap-plate C corresponds in size to the ring A while the cap-plate C¹
is of greater width having a circular flange b' designed to be fastened to the sheave,
(not shown).
Within the two chambers of the ring are placed two sets of balls or rollers D
which are held in place by the end cap-plates and the circular shoulders of the
central flange, said rollers being free to move in their respective circular
chambers, and having contact with the horizontal rings, which latter can be
replaced when worn.
The advantages of my invention are apparent to those skilled in the art to which
it appertains and it will be specially observed that I have produced a simple and
inexpensive bushing and ball-bearing for sheaves for pulley-blocks. The chambers
in which the balls are confined are approximately square and in practice said balls
are in contact with the pin or shaft, on which they work, and also the bronze rings
at their opposite diametrical points. In this way friction is reduced to a minimum.
The shouldered flange serves to keep the balls in place and prevents their
accidental displacement or falling out when the pin or shaft is withdrawn.
Another advantage lies in the fact that I am enabled to employ two sets of balls or
rollers and thus all rocking or wabbling of the sheave or pulley is prevented. As
before stated this bushing and roller-bearing is specially designed for wooden
sheaves, but when the latter are made of metal the bushing is not necessary, that is,

page_text: the sheaves may be fitted with the flared flange and ready to receive the balls and
cap-plates. It will be understood that I do not restrict myself to two series of
balls or rollers, since the use of any number of series is clearly within the scope of
my invention.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. A ball-bearing, comprising a ring or its equivalent having a central circum-
ferential flange forming two circular chambers, balls located in said chambers, and
cap-plates fitted over said chambers and enclosing said balls therein, substantially
as set forth.
2. A ball-bearing, comprising a ring or its equivalent having a central circum-
ferential flange provided with continuous shoulders at its edge, said flange dividing
said ring into two chambers, balls located in said chambers and cap-plates connected
to said ring and enclosing said balls, substantially as set forth.
3. The herein-described improved ball-bearing, comprising the ring or cylinder
having an inner circumferential flange the edge of which is flared, forming
continuous shoulders, said flange dividing said ring into two chambers, rings or
bands in said chambers, balls located in said chambers and held in place by said
shoulders, and the cap-plates connected to said ring or cylinder and confining said
balls in said chambers, one of said cap-plates having a circumferential flange,
substantially as set forth.
Dated this 12th day of June 1894.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.