Improvements in Tyres and Rims for Wheels of Velocipedes and other Vehicles.
Year: 1891

page_text: Date of Application, 16th Oct., 1891-Accepted, 21st Nov., 1891
COMPLETE SPECIFICATION.
Improvements in Tyres and Rims for Wheels of Velocipedes and
other Vehicles.
I, JOSIAH QUERTIER of Babbicombe, Princess Road, Westbourne Bourne-
mouth in the County of Dorset, Commercial Traveller, do hereby declare the
nature of this invention and in what mauner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
The object of this invention is to provide the wheels of velocipedes and other
vehicles with tyres of the type generally known as pneumatic" or air inflated, which
will possess great durability and resistance to wear and tear while retaining the
required degree of elasticity.
Pneumatic or inflated tyres are subject to the objection that they are liable to
be punctured by coming in contact with or passing over sharp stones, nails, thorns
or other substances and are soon burst.
Now according to my invention, I construct the tyre which may be of rubber or
other suitable material, in two portions, one of which is a tube of rubber or other
material with a suitable air valve for inflating, which I place inside the rim of the
wheel and over this pneumatic or air tube I place an ontor tyre of rubber or other
substance preferably of an elastic nature to serve as a guard or protector for the
pneumatic or air inflated tube as well as acting as an ordinary solid tyre, then
inflate the tube.
This outer tyre is placed partly within the rim of the wheel which is so formed
or curved as to hold the same firmly in position, at the same time allowing it to
spring back or recede into the rim when pressure is brought to bear upon it. The
outer tyre may also be held in place without using the tube, air being compressed
in the chamber formed by the rim and the tyre, but in this case the tyre should be
made with a wide tapered flange which is pressed against the inside of the rim, by
the air pressure in the chamber making a tight joint.
And in order that my invention may be clearly understood I will proceed to
describe the same with reference to the accompanying drawings, in which
Figs. and 2 are sectional views of tyres and rims constructed according to my
invention.
In some
Fig. 3 is a section of a rim and tyre suitable for a carriage or light vehicle.
In these figures, A is the pneumatic or air inflated tube, over which is placed
the outer tyre of rubber or other suitable material B, of T shaped or other section,
formed so as to be held firmly in place within the rim C of the wheel.
cases, instead of the section showu in full lines in Fig. 1,-1 may make the tyre B
of the section shown partly in full and partly in dotted lines in Fig. 1, the extra
portion D D D" shown in dotted lines being for the purpose of preventing mud
or grit from working in between the rim C and the tyre B. The load on the wheel
compresses the tube A and the shoulders D' D" press against the rim C and
prevent mud or dust getting between the rim C and the tyre B.
In the case of disc wheels, the rim C may be made in two pieces, as shown in
Fig. 1, and rivetted or otherwise fastened to the disc.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that I am
aware of the Specifications filed with Carroll's application for a Patent No. 6943
of 1891 and I lay no claim to any invention which may be held to be covered
by the said Specifications & subject to such extent I declare that what I
claim is :-
1. In pneumatic or inflated tyres, the combination of an outer solid tyre with
an inner inflated tube, substantially as hereinbefore described and shown, and
for the purpose stated.
2. Forming the rims of wheels to receive solid and pneumatic tyres, substantially
of the shape illustrated by Figure 3 of the accompanying drawings.
3. The improved compound pneumatic tyres, substantially as hereinbefore
described and shown.
Dated October 16th 1891.
ERNEST SALAMAN,
Patent Agent to the British and Foreign Patents and Trade Marks Society,
61 & 62, Chancery Lane, London, W.C., Agent for the Applicant.