Improvements in Sprocket Wheels and Bearings for Velocipedes.
Year: 1898

page_text: Date of Application, 18th May, 1898
Complete Specification Left, 18th Feb., 1899-Accepted, 18th Mar.,
1899
PROVISIONAL SPECIFICATION.
Improvements in Sprocket Wheels and Bearings for Velocipedes.
We, JAMES SIMEON EDGE, No. 559, Stratford Road, Sparkbrook, Birmingham,
in the County of Warwick, Manufacturer, and JAMES HALL WRIGHT, of
Broughton Chambers, Old Square, Birmingham, in the County aforesaid,
Solicitor, do hereby declare the nature of this invention to be as follows:-
This invention consists of the improvements hereinafter described in sprocket
wheels and bearings for velocipedes and has for its object to provide means
whereby the hub of a sprocket wheel is arranged and combined so as to form the
ball race of the ball bearing the same forming part of or carrying the crank.
The cone is attached to the inside of the bottom bracket thus forming the
bearing on one side. The other bearing is formed by inserting the ball race on
the inside of the bottom bracket and forming the cone on the spindle. The
arrangement of the parts thus described allow for a narrower tread than is
obtained in an ordinary constructed bearing and for a more efficient adjustment.
In carrying our invention into effect we make a ball race furnished with a
projecting flange or ears by which it is attached with screw pins to the centre
of the chain or sprocket wheel so as to form the hub thereof. The external face
of the hub terminates in the crank boss.
We provide a bottom bracket and screw both ends internally: to the end next
the chain wheel we permanently screw therein a cone which forms the other part
of the bearing.
To the other end of the bottom bracket we screw a ball race having a projecting
flange with a milled edge thus rendering it adjustable.
We provide a spindle with a cone near one end to pass through the bottom
bracket the cone seating itself on the balls in the ball race, the other end of the
spindle is connected to the crank by a gib or screw cotter thus drawing it up
into place the adjustment being effected by means of the flange of the ball race
at the other end of the bottom bracket.
Improvements in Sprocket wheels and bearings for cocious
We, JAMES SIMEON EDGE, of 559, Stratford Road, Sparbrook, Birmingham,
County of Warwick, Manufacturer, and JAMES HALL-WRIGHT, of Broughton
Chambers, Old Square, Birmingham, in the County of Warwick, Solicitor, do
Duine R17

page_text: 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 consists of the improvements hereinafter described in sprocket
wheels and bearings for velocipedes and has for its object to provide means
whereby the hub of a sprocket wheel is arranged and combined so as to form the
ball race of the ball bearing, the same forming part of or carrying the crank.
The cone is attached to the inside of the bottom bracket thus forming the
bearing on one side. The other bearing is formed by inserting the ball race on
the inside of the bottom bracket and forming the cone on the spindle. The
arrangement of the parts thus described allow for a narrower tread than is
obtained in an ordinary constructed bearing and for a more efficient adjustment.
In carrying our invention into effect we make a ball race furnished with a
projecting flange or cars by which it is attached with screw pins to the centre
of a chain or sprocket wheel so as to form the hub thereof. The external face
of the said hub terminates into the boss of the crank.
We provide a bottom bracket and screw both ends internally to one end, namely
the end next the chain wheel, we screw permanently therein a cone which forms
the other part of the bearing. To the other end of the bottom bracket we screw
a ball race having a projecting flange with a milled edge thus rendering it adjust-
able. We provide a spindle with a cone near one end, to pass through the bottom
bracket the cone seating itself on the balls in the ball race, the other end of the
spindle is connected to the crank by a gibb or screw cotter thus drawing it
into place, the adjustment being effected by means of the flange of the ball race
at the other end of the bottom bracket. In order that our invention may be
more clearly understood we will describe it by reference to the accompanying
drawings the same letters of reference indicating similar parts throughout:-
Fig. 1 is a longitudinal section of our invention. Fig. 2 an end view, and
Fig. 3 and 4 detail views. The crank A is shrunk to the boss B the boss forming
the ball race at one end, is fixed by means of the projecting cars C to the chain
a sprocket wheel D with screw pins E. The cone F shown separately in Fig. 3
is fixed permanently into the bracket G and thus forms a complete ball bearing H.
To the other end of the bracket we screw the ball race K shown separately in
Fig. 4 having a projecting flange - the edge of which is milled to render it
adjustable. The spindle is provided with a cone S and forms the bearing H
The other end is connected to the crank. by a screw cotter V the whole bearing
being adjusted by means of the ball race K.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed, we declare that what we
claim is:.
(1) In combination with the bottom bracket of a bicycle the crank A, boss B,
and cone F, which form the ball bearing H also the ball race K, and cone S
forming the bearing H² substantially as described and illustrated and for the
purpose set forth.
Dated this 17th day of Waluma 1900
WILLIAM HENRY BARACLOUGH,
36, Temple Street, Birmingham, Applicant's Agent.