Improvements in Pneumatic Tyres for Cycles and other Road Vehicles.
Year: 1893

page_text: Date of Application. 21th Nov., 1893
Complete Specification Left, 28th July, 1894-Accepted, 8th Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres for Cycles and other Road
Vehicles.
I, WILLIAM HENRY CRESSWELL, of Woodley Bank, Woodley, in the County
of Chester, Engineer, do hereby declare the nature of this invention to be as
follows:-
:-
My invention relates to pneumatic tyres for cycles and other road vehicles and
consists in the application to the envelope or outer covering of canvas or other
material, which incloses the air tube, of an additional strip of canvas or other
suitable material with a wire, cane or other suitable substance, embedded in the
free edge thereof, my object being to secure the whole tyre when inflated and in
position on the rim of the wheel, in a better and more efficient manner.
additional strip of canvas is cemented or otherwise secured along one side to one
edge of the envelope or outer cover which has a wire or equivalent embedded in
each edge to fit into the grooves or recesses in a rim of say concave section.
This
The additional strip of canvas is placed in the rim so that its free end may
slightly overlap one edge or lip of the rim of the wheel and the said strip may be
cemented to the rim if desired; the air tube is then placed in position on the rim
with the aforesaid strip lying between it and the rim, and the envelope or outer
covering is wrapped over the air tube and its free edge is placed in the groove or
recess formed to receive it on the rim. On the inflation of the air tube the bedding
strip of canvas is pressed against the outer cover causing the embedded wires in
the latter to lock in the grooves in the rim and also preventing the heads of the
spokes injuring the air tube.
-
Instead of attaching a separate piece of canvas to the outer covering to form
the bedding strip I may employ a bedding strip formed in one piece with the said
outer covering the three wires being employed as before described.
Dated this 28th day of November 1893.
H. B. BARLOW & GILLETT,
Agents for Applicant.
Improvements in Pneumatic Tyres for Cycles and other Road
Vehicles.
I, WILLIAM HENRY CRESSWELL, of Woodley Bank, Woodley, in the County
of Chester, 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 :-
My invention relates to pneumatic tyres for cycles and other road vehicles and
Do23
'

page_text: consists in the application to the envelope or outer covering of canvas or other
material, which encloses the air tube, of an additional strip of canvas or other
suitable material with a wire, cane or other suitable substance, embedded in the
free edge thereof, my object being to secure the whole tyre when inflated and in
position on the rim of the wheel, in a better and more efficient manner.
additional strip of canvas is cemented or otherwise secured along one side to one
edge of the envelope or outer cover which has a wire or equivalent embedded in
each edge to fit into the grooves or recesses in a rim of say concave section.
This
And in order that my invention may be fully understood and readily carried
into effect I will describe the accompanying sheet of drawings reference being had
to the figures and letters marked thereon.
Fig. 1 is a perspective view showing part of a wheel rim with a detachable
pneumatic tyre consisting of an air tube surrounded by my improved envelope or
outer covering. Fig. 2 is a transverse sectional view of the same but showing the
air tube fully inflated and secured in position on the wheel rim by my improved
envelope or outer covering.
In the drawings,-a represents the wheel rim which may be of any suitable shape
or section, the air tube and c my improved envelope or outer covering composed
of a rubber tread cemented or otherwise secured to a canvas foundation or lining;
the outer covering c has a wire d inserted along one edge and a wire e also inserted
in it. According to my invention I cement or secure to the edge of the outer
covering near the wire e an additional strip or flap of canvas or canvas and
rubber with a third wire g inserted along its free edge and this flap f extends far
enough to overlap the wire d when the tube is fully inflated as shown in Fig. 2.
In place of the wires d, e, g, I may use pieces of cane or other suitable
substance.
In place of cementing a separate strip of canvas to the foundation of the
envelope c I may make the foundation d'and the flap fall of one piece of canvas
and insert the three wires in their respective positions as shown.
In applying this improved envelope or outer covering to secure a pneumatic tyre
to a wheel rim the flap of the envelope is laid on the rim in the position shown
in Fig. 1, so that the wire g comes opposite one edge and the wire e opposite the
other edge of the rim; the air tube b is then placed on the flap and partially
inflated through the valve h, Fig. 1, and when this has been done the envelope or
outer cover c is brought over the air tube b and its edge with the wire d tucked
between the portion and the wheel rim so that the wire d passes below the wire y,
the tube can then be fully inflated which will have the effect of forcing the wire e
into one of the grooves or recesses in the wheel rim while at the same time the
wire d is forced into its groove in the rim and secured and locked there by the
wire g in the edge of the flap. The wire g in the flap might be laid against
the recess in the rim, and the wire d laid over it if preferred. The flap falso forms
a bedding strip or platform for the air tube and effectually protects the tube from
injury by the heads of the spokes.
By the use of the extended envelope and three wires as described I am enabled
to dispense with a separate cushion or pad between the wheel rim and the pneumatic
tube for the protection of the latter from pinching, or by injury from the spokes ;
and at the same time whilst obtaining a very secure fastening I afford every
facility for examining and repairing the pneumatic tube when necessary by the
opening of one side of the outer covering c only.
I am aware of the Specification of Letters Patent No. 22966 of 1892 granted to
Sydney Lee and I do not claim anything described and claimed therein.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be perforined I declare that what
I claim is :-
1. In a pneumatic tyre in combination with the air tube, an envelope or outer
covering provided with a flap or extension which forms a pad or platform between

page_text: the wheel rim and the air tube and is provided with three wires, canes, or
equivalents arranged to securely lock the tyre in position on the wheel rim sub-
stantially as and for the purposes described and as illustrated in the accompanying
drawings.
2. In combination, the wheel rim a, the air tube b, and the envelope or outer
covering provided with a flap or extension f and the three wires, canes, or
equivalents d, e, g, all substantially as and for the purposes herein set forth.
Dated this 27th day of July 1894.
H. B. BARLOW & GILLETT,
17, St. Ann's Square, Manchester, Agents for Applicant.