Improvements in Pneumatic Tyres.
Year: 1896

page_text: Date of Application, 4th Mar., 1896
Complete Specification Left, 4th Dec., 1896-Accepted, 13th Feb., 1897
Improvements in Pneumatic Tyres.
We, PETER MACLELLAN, of the Firm of George Maclellan & Co., Rubber
Manufacturers, Glasgow Rubber Works, Maryhill, Glasgow, and JAMES WEDDERBURN
OGILVY WALKER, Manager with said Firm, do hereby declare the nature of this
invention to be as follows:-
This invention which relates to pneumatic tyres for the wheels of bicycles and
similar vehicles, has for its object the production of a simple and efficient single tube
tyre the air tube of which shall be readily accessible for repair of punctures and
easily replaced.
Under the invention the air tube which is of the usual construction is enclosed by
two annular bands of rubber cloth, the breadth of each of which is such that on being
folded or fitted around the air tube the edges overlap and provide a double thickness
of the fabric on the outer circumference of the air tube and also between the tube and
the wheel rim. The inner annular band is made up of a flat strip of rubber cloth
or canvas cut bias at its ends and joined to form a ring which is placed on the wheel
rim under the air tube. The edges of this annular band are folded or fitted over the
air tube cementing or solutioning only about half an inch of the edges overlapping
on the outer circumference of the air tube. Over the tube so covered is fitted the
second hand or outer covering which is similarly made up as an annular band, the
mid part of the band being laid over the overlapping edges of the first band and
its edges fitted round and overlapped on the inner or smaller circumference of the
tube which is in contact with the wheel rim. This band is put on without solution or
cement but the overlapping edges are solutioned or cemented together so that on
completion the outer covering is tubular. This outer band or covering is made up
of rubber cloth or canvas to which is vulcanised or solutioned on the outside a strip
of rubber having a plain or corrugated surface to form the tread of the tyre, the
rubber strip extending around that portion of the tyre which is without the rim, but
being omitted as unnecessary at the overlapping edges which when the tyre is in
place bear on the wheel rim to which they may be cemented.
When the air tube is distended by inflation the overlapping edges of the inner
covering band are tightly grasped between the air tube and the outer covering.
Access to the air tube to repair punctures is readily obtained by stripping the
solutioned or cemented overlapping edges of the outer band or covering and
unfolding the bands; and after repair the parts are easily replaced and secured by
cementing the overlapping edges of the outer band.
Dated this 3rd day of March 1896.
WALLACE FAIRWEATHER,
Chartered Patent Agent,
62 Saint Vincent Street, Glasgow, Agent for the Applicants.

page_text: Improvements in Pneumatic Tyres.
We, PETER MACLELLAN, of the Firm of George Maclellan & Co., Rubber
Manufacturers, Glasgow Rubber Works, Maryhill, Glasgow, and JAMES WEDDERBURN
OGILVY WALKER, Manager with said Firm, 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 which relates to pneumatic tyres for the wheels of bicycles and
similar vehicles, has for its object the production of a simple and efficient single
tube tyre the air tube of which shall be readily accessible for repair of punctures and
easily replaced.
Under the invention as illustrated by the accompanying drawings, Fig. 1 of
which is a transverse section and Fig. 2 a part longitudinal section of a tyre, the
air tube A, which is of the usual construction, is enclosed by two annular bands B, C,
of rubber cloth, the breadth of each of which is such that on being folded or fitted
around the air tube A the edges overlap at D and F and provide a double thickness
of the fabric on the outer circumference of the air tube and also between the tube A
and the wheel rim E. The inner annular band B is made up of a flat strip of rubber
cloth or canvas cut bias at its ends and joined to form a ring which is placed on the
wheel rim E under the air tube. The edges of this annular band B are folded or
fitted over the air tube A and may be cemented or solutioned only about half an inch
of the edges overlapping at D on the outer circumference of the air tube A as shown
particularly at Fig. 1. Over the tube A so covered is fitted the second band or outer
covering which is similarly made up as an annular band, the mid part of the band C
being laid over the overlapping edges of the first band B and its edges fitted round
and overlapped at F on the inner or smaller circumference of the tube which is in
contact with the wheel rim E. This band is put on without solution or cement but
the overlapping edges may be solutioned or cemented together so that on completion
the outer covering is tubular. This outer band or covering is made up of rubber
cloth or canvas cut on the bias to which is vulcanized or solutioned on the outside a
strip of rubber G having a plain or corrugated surface to form the tread of the tyre,
the rubber strip extending around that portion of the tyre which is without the
rim, but being omitted as unnecessary at the overlapping edges which when the tyre
is in place bear on the wheel rim to which they may be cemented.
When the air tube A is distended by inflation the overlapping edges of the inner
covering band B are tightly grasped between the air tube A and the outer covering C
and the overlapping edges of the inner covering band B need not necessarily be
solutioned or cemented together.
Access to the air tube to repair punctures is readily obtained by stripping the
solutioned or cemented overlapping edges of the outer band or covering C and
unfolding the bands D, C; and after repair the parts are easily replaced and secured
by the overlapping edges of the outer band C.
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 :-
A pneumatic tyre composed of an air tube enclosed by two annular bands of
rubber cloth the inner of which bands is fitted to overlap and provide a double

page_text: thickness on the outer circumference of the air tube and the outer one made to
overlap between the tyre and wheel rim, substantially as described.
Dated this 3rd day of December 1896.
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62 Saint Vincent Street, Glasgow, Agent for the Applicants.