Improvements in Cycle Wheels.
Year: 1891

page_text: Date of Application, 22nd Oct., 1891
Complete Specification Left, 22nd July, 1892-Accepted, 27th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in Cycle Wheels.
I, HENRY KESTERTON, of 23 Smithford Street, Coventry, Engineer, do hereby
declare the nature of this invention to be as follows:-
In the Specification of a former Patent granted to me No. 15311 in the year
1890 I have shown a pneumatic tyre and rim in which there is an india rubber
jacket surrounding an inflated tube and in which the rim is of trough like form
having tubular edges with the edges of the jacket nipped and held between the
tubular edges of the rim.
According to my present invention I form the rim in a manner to give a wider
support to the tyre. I dispense with the tubular flanges whilst retaining the dove-
tail recess to receive the edges of the jacket and I extend the sides of the rim
outwards from the dovetail recess, inclining them somewhat downwards so as to
form a broad base to rest upon the tyre and conforming to its shape. To prevent
the edges cutting the jacket I double them inwards and this also adds to the
stiffness of the rim. I notch the rim to receive the inflating tube, the width of the rim
being now such as to require it. A transverse section of a rim and tyre in
accordance with my invention is represented by the annexed drawing.
Dated this 21st day of October 1891.
H. KESTERTON.
COMPLETE SPECIFICATION.
Improvements in Cycle Wheels.
I, HENRY KESTERTON, of 23 Smithford Street, Coventry, Engineer, 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:-
In the Specification of a former Patent granted to me No. 15311 in the year
1890 I have shewn a pneumatic tyre and rim in which there is an india rubber
jacket surrounding an inflated tube and in which the rim is of trough like form
having tubular edges with the edges of the jacket nipped and held between the
tubular edges of the rim.
According to my present invention I form the rim in a manner to give a wider
support to the tyre. I dispense with the tubular flanges whilst retaining the dove-
tail recess to receive the edges of the jacket and I extend the sides of the rim
outwards from the dovetail recess, inclining them somewhat downwards so as to
form a broad base to rest upon the tyre and conforming to its shape. To prevent
the edges cutting the jacket I double them inwards and this also adds to the
stiffness of the rim. I notch or perforate the rim to receive the inflating tube, the
width of the rim being now such as to require it.
In the drawings annexed Figure 1 is a section of the rim and tyre of a cycle
wheel in accordance with my invention. Figure 2 is a similar section taken near
the inflating valve.

page_text: It will be seen that the rim of the wheel is as before mentioned a band of steel
plate so bent as to provide broad supporting surfaces a' a' shoulders a' a' and a
cavity a which is wider than the distance between the shoulders. The joint of the
rim is brazed or welded. The jacket bis of india rubber lined with canvas
vulcanised on; it has lips 6' 6' and these are covered in like manner exteriorly
with canvas.
The jacket is preferably made as a complete tube with the shoulders
in one and they are cut apart afterwards when the vulcanising operation is complete.
Preferably the jacket is thickened on the outer side which forms the tread of
the wheel.
c is the inflated endless tube or tubular ring of the tyre. This tube is made
of vulcanised india rubber, it is shewn entirely filling the jacket as it does when
inflated.
The lips of the jacket enter into the cavity of the rim and cannot escape from
the rim whether the tyre be inflated or otherwise so that the tyre can only be
detached when uninflated by being pulled out-in this I have the advantage of
other tyres and it is an important point. The metal tube d forming the valve case
is passed through holes in the parts a, b and c; it has a flange d¹ at its inner
end and a screw thread is cut upon its exterior. is a nut which when screwed
up tight fixes the valve case in place and makes an air tight joint. The valve
case dis contracted at ds where a face is formed for the valve e. The valve e has
a stem and a head or nut e³ is screwed on to this stem. f is a coiled steel
spring around the stem and this can be compressed by screwing on the nut until
the spring holds the valve to its face with a considerable pressure which insures
the closing being air tight. The screw thread upon the valve case receives the
inflating syringe. When the inflating syringe is screwed on a peg or stem within
its nozzle comes against the end of the stem of the valve and displaces the
valve from its seat to allow the air to enter during inflation without resistance.
is a screw cap which is applied when the syringe is removed.
I
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 :-
A cycle wheel consisting of an inflated tube, a jacket and a wheel with trough
like rim, such jacket consisting of a split tube with lips increasing in thickness as
they leave the sides of the tube, and such rim consisting of a metal band having its
sides bent inwards to form shoulders approaching each other and partially enclosing
a wider cavity which receives the thickened edges of the jacket; the sides of the
rim also beyond the shoulders being bent outwards forming broad supporting
surfaces to transmit the weight of the rider to the inflated tube and jacket.
Dated this 22nd day of July 1892.
CARPMAEL & Co.,
Agents.