Improvements in the India-rubber Tyres and Metal Rims of the Wheels of Bicycles, Tricycles, and other Velocipedes and Road Carriages.
Year: 1891

page_text: Date of Application, 24th July, 1851
Complete Specification Left, 13th Jan., 1892-Accepted, 13th Feb, 1892
PROVISIONAL SPECIFICATION.
Improvements in the India-rubber Tyres and Metal Rims of the
Wheels of Bicycles, Tricycles, and other Velocipedes and Road
Carriages.
I, THOMAS DALE, of 42 Hockley Hill, Birmingham, Warwickshire, Gold Cutter,
Electro Gilder and Plater, do hereby declare the nature of this invention to be as
follows:
This invention has reference to the india-rubber tyres and metal rims of the
wheels of bicycles, tricycles and other velocipedes and road carriages and my
invention is applicable to all kinds of india-rubber tyres whether cushioned,
pneumatic or solid.
I will describe my invention as applied to the wheel of a velocipede.
It is well known that the rider's weight causes that part of the rubber tyre (and
particularly a cushioned tyre) which is next the ground, to spread out wider than
the metal wheel rim, which latter then cuts into the india-rubber tyre and very soon
destroys the same.
This defect I overcome as follows:-I make a set-off or rebate along each side of
the india-rubber tyre corresponding with about the periphery of the metal rim so
that that part of the tyre which projects beyond the metal rim is narrower than
that part of the tyre which fits in the rim. When the india-rubber tyre is pressed
as by the rider's weight, that part of the india-rubber tyre which projects beyond
the metal rim does not swell out as wide as the rim and consequently is not cut
thereby.
I sometimes make that part of the tyre which fits in the rim of the same width
as the part of the tyre which projects beyond the rim and form the said rebates by
making a rib along each side of the tyre corresponding with the periphery of the
metal rim which latter is shaped to suit the said ribs.
Or the said rebates may be formed by first fixing a hollow semicircular tyre in
the hollow metal wheel rim and then placing a round or other section tyre in the
said hollow semicircular tyre the edges of which latter will then form the said
rebates.
Dated this 23rd day of July 1801
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the India-rubber Tyres and Metal Rims of the
Wheels of Bicycles, Tricycles, and other Velocipedes and Road
Carriages.
I, THOMAS DALE, of 42, Hockley Hill, Birmingham, Warwickshire, Gold Cutter,
Electro Gilder and Plater, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
This invention has reference to the so-called "cushioned" india-rubber tyres and
metal rims of the wheels of bicycles tricycles and other velocipedes and road
carriages.
I will describe my invention as applied to the wheel of a velocipede.
It is well known that the rider's weight causes that part of a cushioned india-
rubber tyre which is next the ground to spread out wider than the metal wheel rim

page_text: the edges of which latter then cut into the india rubber tyre and very soon destroy
the same. This cutting of the tyre by the wheel rim I effectually prevent as
follows: I make a set-off or rebate in the form of a rib along each side of the
india-rubber tyre corresponding with the periphery of the metal rim which latter I
shape to suit the said ribs. That part of the india-rubber tyre which projects
beyond the metal rim is narrower than that part of the tyre which fits in the rim.
When the india-rubber is pressed as by the rider's weight, that part of the india-
rubber tyre which projects beyond the metal rim does not swell out as wide as the
rim and therefore cannot come into contact with the edges of the rim and be cut
thereby.
In order that my invention may be well understood and carried into practice the
same is illustrated by the accompanying sheet of drawings on which
Fig. 1 is a cross section of my improved cushioned tyre and rim;
Fig. 2 is a cross section and Fig. 3 is a side elevation of a piece of the said
tyre;
Fig. 4 is a cross section and Fig. 5 is a side elevation of a piece of the said metal
wheel rim.
The same letters of reference indicate the same parts in all the figures.
A is the cushioned tyre and B is the metal wheel rim. a' a² are the two ribs
which I forin on the cushioned tyre, A, one on each side thereof these ribs fitting
in corresponding open channels in the metal wheel rim B. It will be seen that
these ribs a¹ a form a rebate at each side of the tyre so that the part of the tyre
which fits in the rim is wider than the part a³ which projects beyond the rim. The
parts of the metal rim confine the tyre so as to prevent its spreading sideways
when the tyre is pressed as by the rider's weight so that the part a³ which projects
beyond the metal rim does not swell out as wide as the edges of the rim B and
consequently any cutting of the tyre by those edges is effectually prevented.
Moreover as the tyre cannot spread sideways it is also prevented from collapsing
and its buoyancy is very considerably increased.
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. The improvements in the cushioned india-rubber tyres and metal rims of the
wheels of bicycles, tricy cles and other velocipedes so as to prevent the tyre being
cut by the edges of the metal rim, herein before described and illustrated by the
accompanying drawing, that is to say, making a rib a' a² on each side of the india-
rubber tyre and making the metal wheel rim of the form herein described and shewn
on the accompanying drawing so that when the tyre is pressed as by the rider's
weight the tyre will not spread out and come into contact with the edges of the rim,
as hereinbefore set forth.
2. In a wheel for a bicycle tricycle or other velocipede or road carriage the use
of a cushioned india-rubber tyre such as A having the side ribs a¹ a in combination
with a metal wheel rim B of the form hereinbefore described and shewn on the
accompanying drawings.
Dated this 7th day of January 1892.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.