Improvements in and relating to Pneumatic Tyres.
Year: 1892

page_text: Date of Application, 5th May, 1892
Complete Specification Left, 31st Jan., 1893-Accepted, 4th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to Pneumatic Tyres.
I THOMAS JAMES WILLIAMS, of 9 Wolfington Road, West Norwood, in the
County of Surrey, Manufacturer of Rubber Goods, do hereby declare the nature
of this invention to be as follows:-
My invention relates to a pad or lining for pueumatic tyres, adapted to be placed
between the air tube or chamber and the outer cover or jacket, the object being to
protect the said air tube or chamber from puncture.
My improved pad or lining is composed of any suitable woolly or fibrous material,
such as cotton wool, wadding, felt, or the like, impregnated with any suitable resin
or kindred vegetable substance in a powdered form. The common or commercial
resin or rosin answers the purpose well.
I do not bind myself to any particular method of impregnating the woolly or
fibrous material with the resinous substance as it may be effected in many ways.
A pad or lining composed of this material is almost absolutely proof against
puncture as the resinous substance intermingled with the woolly or fibrous material
gets such a grip on anything trying to pass through it that it promptly prevents its
further passage.
I do not confine myself to any particular method of applying this pad or lining
so long as it is placed between the tread of the outer cover or jacket, and the air
tube within the said cover or jacket.
Dated this 5th day of May 1892.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Pneumatic Tyres.
I, THOMAS JAMES WILLIAMS, of 9 Wolfington Road, West Norwood, in the
County of Surrey, Manufacturer of Rubber Goods, 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 a pad or lining for pneumatic tyres, adapted to be placed
between the air tube or chamber and the outer cover or jacket, the object being to
protect the said air tube or chamber from puncture.
My improved pad or lining is composed of any suitable woolly or fibrous material
such as cotton wool, wadding, felt or the like, impregnated with any suitable resin
or cognate substance in a powdered form. The common or commercial resin or
rosin answers the purpose well.
I do not bind myself to any particular method of impregnating the woolly or
fibrous material with the resinous substance as it may be effected in many ways;
but I find from experience that it can be applied effectively by sprinkling or
dusting it in a powdered form over the woolly or fibrous material forming the body
of the pad.
In the accompanying drawing which illustrates a convenient method of carrying
my invention into practice,
Figure 1 is a view in transverse section of a pneumatic tyre showing the applica-
tion of the pad between the air tube and the outer cover.

page_text: Figure 2 is a view in transverse section of the pad alone.
Figure 3 is a view in transverse section showing the pad formed or placed in
the outer cover, and
Figure 4 is a similar view showing the application of my invention to tyres
having a separate canvas pocket or lining in which case the pad is formed on or
attached to canvas pocket.
Throughout these views similar parts are marked with like letters of reference.
The pad A which is composed of any suitable woolly or fibrous material such as
cotton wool, wadding, or the like is impregnated with resin or cognate substance
in a fine powdered form. This is effected by laying out one or more sheets of
cotton wool, wadding, or the like, and sprinkling or powdering them all over with
finely powdered resin. The sheet or sheets are then folded or built up to obtain
the required thickness, so that the pad consists of a series of folds or thicknesses.
When this pad A is intended to be placed loosely between the air tube B and the
outer cover C as shown by Figure 1, it is preferably enclosed in a wrapper a of
canvas or other suitable textile fabric as shown by Figure 2, but when it is placed
in the cover C as shown by Figure 3 it is preferably placed between the canvas
lining D of the cover and canvas flaps d, d, fixed thereto, and adapted to enclose it.
When the pad is applied to the canvas pocket D the said canvas pocket is adapted
to receive and enclose it as shown by Figure 4. As a modification the canvas
lining or pocket D may be made with a woolly or fibrous face so as to hold and
retain the powdered resin, or the ordinary canvas lining or pocket may be impreg-
nated with the powdered resin, in which case it is best applied in solution and then
dried out.
In applying this pad to existing tyres I may form it in or on a cover adapted
to be applied or fixed to the outer cover of the tyre by any of the well-known
methods.
A pad or lining composed of this material is almost absolutely proof against
puncture, as the resinous substance intermingled with the woolly or fibrous material
gets such a grip on anything trying to pass through it that it promptly prevents its
further passage.
I do not confine myself to any particular method of applying this pad or lining
so long as it is placed between the tread of the tyre and the air tube within the said
cover or jacket.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is :-
1. The improvements in and relating to pneumatic tyres as hereinbefore set
forth.
2. The use in a pneumatic tyre, of a pad composed of any suitable woolly or
fibrous material impregnated with powdered resin or its cognate, as and for the
purpose set forth.
3. The use in a pneumatic tyre of powdered resin or its cognate applied either
directly or indirectly to the canvas lining or pocket for the purpose of protecting
the air tube from puncture.
Dated this 31st day of January 1893.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.