Improvements in and relating to Ball and Roller Bearings.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in and relating to Ball and Roller Bearings.
I, HENRY JOHN BIRD, of 228, Dereham Road, Norwich, Inventor, de hereby
declare the nature of this invention to be as follows:-
This invention has reference to improvements in and relating to ball bearings
and my invention consists in providing a ball bearing with two sets of balls in
the manner substantially as hereinafter described so that the friction will be less
than with a ball bearing having only one set.
In carrying out my invention I employ an outer case of suitable construction
and having a ball run at each end one or both of which may be adjustable.
Within said case I provide a tube provided at each end with adjustable cones
between which cones and the ball runs referred to one set of balls is placed.
Said cones also form-on their sides-ball-runs for a second set of balls and
I provide a second set of cones for them which cones are adjustable in any usual
manner.
The two cones firstly referred to which cones also form on their under or
inner sides ball runs for a second set of balls-are connected together or carried
by a tube or equivalent as described which tube may be in two parts and I wish
it to be understood that instead of balls I may employ rollers and the shape and
means for adjustment may be any which is found in practice to be most suitable.
Dated this 9th day of June 1899.
Improvements in and relating to Ball and Roller Bearings.
I, HENRY JOHN BIRD, of 228, Dereham Road, Norwich, Inventor, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
The invention has reference to improvements in and relating to ball bearings
and my invention consists in providing a ball bearing with two sets of balls in
the manner substantially as hereinafter described, so that the friction will be less
than with a ball bearing having only one set.
In carrying out my invention I employ an outer case of suitable construction
and having a ball run at each end, one or both of which may be adjustable.

page_text: Within said case I employ a tube provided at each end with adjustable cones
between which cones and ball runs referred to one set of balls is placed.
Said cones also form on their sides-ball runs for a second set of balls and
I provide a second set of cones for them which cones are adjustable in any usual
manner.
The two cones firstly referred tc-which cones also form on their under or
inner sides ball runs for a second set of balls-are connected together or carried
by a tube or equivalent as described which tube may be in two parts, and I wish
it to be understood that instead of balls 1 may employ rollers and the shape and
means for adjustment may be any which is found in practice to be most suitable.
Reference is made to the accompanying drawings in which:-
Figure 1 is a section of hub of back wheel. A being fixed cup, B balls
working in my improved multiple bearing 1), the said bearing and balls being
held in position by the adjustable cones C in the outer case of the hub E. F is
spindle or axle.
Figure 2 is a connecting piece or tube which holds the multiple bearings in
position, the cone 1)¹ is fixed on end of connecting piece or tube G, and the
cone D screws on other end of tube G, as shown, and after bearing is
adjusted the small tube G¹, which has a left-handed thread, is passed through
the adjustable cone 1) and screwed inside of connecting piece or tube G the said
small tube G then acts as a set or lock nut.
The outsides of the adjustable cone D and the fixed cone D' form ball runs
for balls working in fixed cups A (Figure 1) and the insides of said adjustable
cone D and fixed cone (Figure 2) form runs for balls which are kept in
position by the cones (as shown in section on Figure 1.
Figure is a section of barrel crank bracket provided with my improved
multiple rotary bearings, E being the outside case, with balls B working in
runs formed by fixed cones (on spindle) and inside of multiple bearings D
and inside of the adjustable cup A and outside of the said multiple bearing D.
Figure 4 is a section of tubular connecting piece G (on Figure 3) which
keeps bearings in position. The part 1 is connected to part J by the screw in
centre and when adjusted the nut or disc H is then used as a set or locking nut
to prevent the bearing from working loose.
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:-
1. Improved ball bearings as and for the purposes described and illustrated.
2. Improved roller bearings as and for the purposes described.
Dated this 9th day of March 1900