Improvements in or connected with Pneumatic Tyres for Vehicles.
Year: 1892

page_text: Date of Application, 18th June, 1892
Complete Specification Left, 15th Feb., 1893-Accepted, 8th Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in or connected with Pneumatic Tyres for Vehicles.
We, WILLIAM STELFOX, of Lorne Street, Moss Side, Manchester, in the
County of Lancaster, Tin Plate Worker, JOHN DUNCAN of Thornbank, Pollok-
shields, Glasgow in the County of Renfrew, Tramway Secretary and Manager, and
JAMES WEDDERBURN OGILVY WALKER of Bowman Street, Crosshill, Glasgow
in the County of Lanark, Foreman India-rubber Worker, do hereby declare the
nature of this invention to be as follows:-
This invention is designed with the object of applying pneumatic tyres to the
wheels of common road vehicles whereby such tyres can be secured to wheels of
any ordinary construction.
The pneumatic tube will be made of layers of canvas or other material of a
strength sufficient to carry any required weight or say to maintain a pressure of
from 300 to 400 lbs. per square inch. Round the pneumatic tube is passed a
cover or tread composed of canvas, rubber or other material which encloses the
tube and passes down at each side of the felloes of the wheel. The lower edges of
this cover or tread are preferably formed with a rib or bead extending round
them to assist in securing the same in position, but this may if not required be
dispensed with.
At each side of the wheel there is bolted a flange or ring over the lower edges of
the cover by which the cover is securely held over the pneumatic tube and the
complete tyre retained in position. The flanges are preferably secured by bolts
passing through holes formed in the felloes of the wheels but may be secured if
desired by screws or other means.
The pneumatic tube is preferably made somewhat broader than the felloes of
the wheel and when the flanges are bolted or screwed into position they draw the
outer cover tightly over the pneumatic tube and hold it securely into position.
The bead or rib on the edge of the cover assists in preventing any slipping of the
tyre after it is secured in position.
The flanges may be either made of metal such as iron, or steel or they may
be made of wood or other material. And may be made either in a ring the size
of the wheel or in pieces or segments corresponding somewhat to the wheel felloes.
By this invention pneumatic tyres may be applied to the wheels of any vehicles
without any alteration therein or without even the necessity of removing the iron
hoop with which the wheels are at present shod; for new wheels however we prefer
to build them without a heavy ring, and the sides of the felloes may be recessed to
receive the clamping flanges or rings.
Dated this 17th day of June 1899
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in or connected with Pneumatic Tyres for Vehicles.
We, WILLIAM STELFOX, of Lorne Street, Moss Side,, Manchester, in the
County of Lancaster, Tin Plate Worker, JOHN DUNCAN, of Thornbank, Pollok-
shields, Glasgow, in the County of Renfrew, Tramway Secretary and Manager,
and JAMES WEDDERBURN OGILVY WALKER, of Bowman Street, Crosshill,
Glasgow, in the County of Lanark, Foreman India-rubber Worker, do hereby
declare the nature of this invention and in what manner the same is to be

page_text: performed, to be particularly described and ascertained in and by the following
statement:-
This invention is designed with the object of applying pneumatic tyres to the
wheels of common road vehicles whereby such tyres can be secured to wheels of any
ordinary construction.
It consists essentially of an ordinary wheel constructed or fitted with a pneumatic
tube and an outer cover or tread held in position or clamped to the side of the
wheel by a flange or ring over the lower edges.
It will be fully described with reference to the accompanying drawings.
Fig. 1, side elevation partly in section of a portion of the felloes of a wheel.
Fig. 2, transverse section of same.
The felloes A of the wheel are made in the ordinary way and shod with an iron
hoop B to hold them firm. A pneumatic tube C is placed over the iron hoop B
and is held in position by the outer tread or cover D. The pneumatic tube Ċ is
made with a thin inner layer of rubber e surrounded by several layers c¹ of strong
canvas. The layers of canvas are wound spirally first in one direction and then
in the reverse direction to give the required strength and to ensure that joints are
securely covered, and is capable of sustaining a pressure of from 400 to 800 pounds
per square inch. The cover or tread D which is placed over or round the
pneumatic tube C and encloses it is composed also of a layer of rubber d and
layers of strong canvas d¹ on the outside, and the edges d¹¹ pass down over the
sides of the felloes A.
At each side of the wheel there is bolted a flange or ring E over the lower
edges d of the cover D by which the cover is securely held over the pneumatic
tube and the complete tyre retained in position. The flanges are preferably secured
by bolts e passing through holes a formed in the felloes of the wheels but may be
secured if desired by screws or other means.
We at present prefer to make the outer cover or tread D as shown but if found
desirable it may be made with a bead or rib on the edges to assist in securing the
same in position and the flanges E or the flange on the outer side of the wheel may
be made with a bead such as shown to protect the tyre in case of coming against a
kerb stone or other obstruction.
The rings or flanges E may be either made of metal such as iron or steel or
they may be made of wood or other material. And may be made either in a ring
the size of the wheel or in pieces or segments corresponding somewhat to the wheel
felloes.
By this invention pneumatic tyres may be applied to the wheels of any vehicles
without any alteration therein or without even the necessity of removing the iron
hoop with which the wheels are at present shod; for new wheels however we prefer
to build them with a lighter ring, and the sides of the felloes recessed to receive.
the clamping flanges or rings.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
The combination with a wheel constructed with felloes A and iron hoop B in the
ordinary way, of a pneumatic tube C, outer tread of cover D with edges lapping
over the sides of the felloes and clamping rings or flanges E bolted to the sides of
the wheel substantially as described.
Dated this 11th 1 1000