Improvements in Pneumatic or Air-inflated Tyres.
Year: 1891

page_text: Date of Application, 20th Nov., 1891
Complete Specification Left, 9th Aug., 1892-Accepted, 10th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic or Air-inflated Tyres.
We WILLIAM SMITH Managing Director of Messrs. Thomas Smith & Sons,
of Saltley Limited, Saltley Mills, Birmingham in the County of Staffordshire, and
ALFRED CHESTER HICKLING of 19 Barbican in the City and County of London,
Agent of the aforesaid Company, do hereby declare the nature of this invention
to be as follows:-
Our invention relates to an improved construction of pneumatic or air-inflated
tyre, and it consists of a non-stretchable air-tube which is moulded inside a tubular
rubber cover or envelope, the two being prevented from adhering the one to the
other during the process of vulcanization by the introduction of any suitable
substance between the two parts. The air tube is constructed of two thicknesses
of rubber between which is an insertion of canvas, silk or other non-stretchable
material, the outer thickness of rubber being preferably the air proof skin.
outer envelope or cover is made of rubber or rubber compound and is made over
the air-tube the two being prevented from adhering the one to the other during the
process of vulcanization by the introduction of French chalk or other suitable
substance between the two parts.
The
The air-tube is provided with the usual valve for inflation and also if desired
deflation.
It will be seen that by this construction a tyre of uniform size is obtained, the
size and shape being determined by the air-tube and not by the outer cover.
To repair our improved tyre after puncture, the outer cover or envelope is cut at
the point of puncture to enable a portion of it to be turned back to expose the air-
tube. A patch having been put on the air-tube over the puncture, the inner
surface of the outer cover is solutionized down to the air-tube and the repair is
completed. If it is desired to use the wheel at once a patch or bandage is placed
over or round the outer cover or envelope to cover the opening therein, when the
air-tube can be blown up at once.
Dated this 20th day of November 1891
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Pneumatic or Air-inflated Tyres.
We WILLIAM SMITH Managing Director of Messrs. Thomas Smith & Sons
of Saltley Limited, Saltley Mills, Birmingham, in the County of Staffordshire, and
ALFRED CHESTER HICKLING of 19 Barbican, in the City and County of London,
Agent of the aforesaid Company, 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 :-
Our invention relates to an improved construction of pneumatic or air-inflated
tyre, and it consists of a non-stretchable air tube which is moulded inside a tubular
rubber cover or envelope, the two being prevented from adhering the one to the
other during the process of vulcanization by the introduction of any suitable
substance between the two parts. The air tube is constructed of rubber with a
wrapper of canvas, silk or other non-stretchable material. The outer envelope
or cover is made of rubber, or rubber compound, with an insertion of canvas or
i

page_text: equivalent material, and it is made over or on the air tube, the two being prevented
from adhering the one to the other during the process of manufacture and
vulcanization by the introduction of French chalk or other suitable substance
between the two parts.
The air tube is provided with the usual valve for inflation and also if desired
deflation.
In the accompanying drawing in which
Figure 1 is a view in transverse section of the complete tyre,
Figure 2 is a similar view of the air tube, and
Figure 3 is a similar view of the outer cover or envelope,
A designates the air tube and a its canvas or other wrapper, A' designates the
outer cover and a' its insertion of canvas or other equivalent material.
It will be seen that by this construction a tyre of uniform size is obtained, the
size and shape being determined by both the air tube and the outer cover.
The outer cover may if desired be made of a greater thickness at the tread than
elsewhere.
To repair our improved tyre after puncture, the outer cover or envelope is cut at
the point of puncture to enable a portion of it to be turned back to expose the
air tube which having been repaired in the usual manner, the inner surface of the
outer cover is solutionized down to the air tube and the repair is completed. If it
is desired to use the wheel at once a patch or bandage is placed over or round the
outer cover or envelope to cover the opening therein, thereby allowing the air tube
to be blown up at once before the solution is dry. Small puncture holes may be
repaired by injecting rubber solution in the manner practised with "Boothroyd
and similar tyres.
"
As a modification the canvas or other wrapper a may be placed on the inside of
the rubber air tube, or it may be placed between two thicknesses of rubber.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
1. The improved construction of pneumatic or air inflated tyre, as hereinbefore
set forth.
2. A pneumatic tyre, having an outer cover or envelope of rubber and canvas or
its equivalent, and a separate or loose air tube of rubber and canvas or its
equivalent, manufactured, moulded, or formed, together to make one complete tyre,
as and for the purpose set forth.
Dated this 9th day of August 1892.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicants.