Improvements in Pneumatic Tyres.
Year: 1893

page_text: Date of Application, 15th Apr., 1893
Complete Specification Left, 15th Jan.. 1894-Accepted, 17th Feb., 1894
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres.
I, WILLIAM COULTER, Manager of India Rubber Works of 23 Park Street
Chorlton on Medlock in the City of Manchester County of Lancaster do hereby
declare the nature of this invention to be as follows:-
The subject of this invention is the formation of an inflated or pneumatic tyre,
forming & taking the place of the strip or shield now in use as a protector for the
inner inflated tube or sections, which, in my invention may be dispensed with, &
the said shield in place of being a solid sheet, is moulded in a ply or two plies of
rubber in the formation of a fluke fish. This fluke shaped cover is fixed on to a
round rim or tyre & after being attached is inflated, between the plies. I cover
the rim of the wheel, with a solid or cushion rubber tyre so that in case of puncture
or collapse of the said inflated shield, it can be removed (if found necessary) & the
machine is still workable as a solid or cushion tyred cycle. When an I. rubber
cord or cushion tyre is not used I make the felloe of the wheel in the form of a
round metal tube which I may protect with a covering of sheet india rubber, so
that if the shield is removed the machine is still servicable.
I make these inflated covers of either steam vulcanized india rubber sheet or
insertion & lined inside, if desirable with any flexible material to resist puncture.
Dated 13th day of April 1893.
WILLIAM COULTER.
Improvements in Pneumatic Tyres.
I, WILLIAM COULTER of Park Street Chorlton-on-Medlock Manchester, in
the County of Lancaster India Rubber Works Manager 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 :-
This invention relates to the shields or covers that are ordinarily employed for
encasing and protecting the air tube or sections of air tubes forming a pneumatic
tyre. The object of my invention is to obtain a pneumatic tyre applicable to the
wheels of bicycles, tricycles and light road carriages, that will be less liable to be
punctured, or if accidentally perforated will remain serviceable for running until
the journey is completed, or until a repair can be effected.
I attain this object by the means hereinafter described, and as shown in the
accompanying sheet of drawings, in which
Fig. 1. is a transverse section of an outer cover or shield constructed according to
my invention;
Fig. 2. is a transverse section showing my invention applied to the rim of a wheel,
and enclosing an ordinary air tube, or a cushion tyre;
Fig. 3. is a transverse section showing my invention applied with a solid india
rubber tyre enclosed therein; and
Fig. 4. shows a transverse section of a metal rim with my invention applied.
In these views similar letters refer to similar parts.
In this invention I construct a pneumatic tyre with any preferred form of air
tube, or a cushion tyre, or a solid india rubber tyre, or a metal rim of any preferred
form without the intervention of any air tube or section of air tube, in combination
Price 811

page_text: with a cover or shield as shown in Fig. 1. which I employ in place of the ordinary
shield or cover that is formed of india rubber and canvas in a solid sheet. In my
invention I mould said shield or cover in a ply, or two plys of india rubber with an
air space between the outer and inner surfaces, and with a tube c for inflation
formed to project from one of the edges d of said cover; I make the aforesaid
covers a of either steam vulcanized rubber sheet or insertion, and when preferred
they may be lined with any flexible material to resist puncture.
The edges d of said cover may be of the ordinary plain pattern for cementing to
the rim of the wheel in the usual manner, or may be formed for attachment to said
rim by any of the ordinary or existing devices. The aforesaid cover is inflated,
and the air space 6 filled with compressed air or gas from the side by means of the
inflating tube c. By the application of my invention a pneumatic tyre is obtained
either in combination with an air tube d² as in Fig. 2, that is inflated by means of
the inflating tube passing through the rim dx in the usual manner, or a cushion
tyre represented by the same view, or in combination with a solid india rubber
tyre e as in Fig. 3. or in combination with a metal rim das in Fig. 4, or a metal
rim of other preferred form. By these means, in the event of puncture, or collapse
of the aforesaid inflated shield, it may be reversed when covering a pneumatic tube;
or when employed in combination with a cushion, solid india rubber, or metallic tyre,
may either be removed or retained, and the machine be worked as with wheels
having cushioned or solid tyres.
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.
1st. In combination with a pneumatic or other tyre, the use of a shield or
protector in which is a central space for containing compressed air or gas,
constructed in the manner and for the purpose substantially as herein before
described.
2nd. A shield or protector that is constructed with a central air space, and
employed in combination with a compressed air or other pneumatic tubular tyre, or
a solid india rubber tyre or ring, or a metal rim, and attached thereto by any of the
means ordinarily employed, or by any preferred device, for the purpose and in the
manner substantially as shown and as herein before described.
Dated this 13th day of January 1894.
THOMAS PRESCOTT,
53, Arcade Chambers, St. Mary's Gate, Manchester,
Agent for Applicant.