☐ Improvements in or relating to Wheels and Tyres for Bloycles, Tricycles, and other Road Vehicles.
Year: 1893

page_text: Date of Application, 27th Sept., 1893
Complete Specification Left, 27th June, 1894-Accepted, 18th Aug., 1894
PROVISIONAL SPECIFICATION.
☐ Improvements in or relating to Wheels and Tyres for Bloycles,
Tricycles, and other Road Vehicles.
.
We, ABRAHAM WOOD of 55 Bridge Street, Ramsbottom, Jeweller, and
JAMES HAWORTH HILL of Little Holcombe near Ramsbottom, Salesman, both
in the County of Lancaster, do hereby declare the nature of our said invention to
be as follows:-
This invention refers to improvements in or relating to wheels and tyres for
bicycles, tricycles, and other road vehicles and is designed to allow pneumatic
tyres to be self-closing in case of puncture and to facilitate the removal of the air
tube when necessary. This is accomplished by providing an air or pneumatic tube
of india-rubber with an outer casing or covering of either canvas, cotton fabric,
rubber, or other like material. The air or pneumatic rubber tube is of such a
diameter that when fully inflated without being stretched it will cause the outer
casing or covering to be at its greatest stretch, whereas the air or pneumatic rubber
tube will not be stretched beyond its normal condition. To produce this result the
inner tube is of such dimensions that when it is fully inflated without being stretched
it merely expands sufficiently to fill the capacity of the outer casing when the latter
is on full stretch. By this means any puncture that may be made in the air or
pneumatic rubber tube will at once close up again owing to its being in its normal
condition and by the pressure exerted by the outer casing or covering. To
facilitate the removal of the air or pneumatic rubber tube we construct the metallic
wheel rim in halves centrally, each edge being provided with bent ends to receive
metallic or other clips that can be removed by sliding them circumferentially to
openings or their equivalents provided for the purpose. As the air or pneumatic
tyre is inflated the metallic rim is pressed outwardly, which action locks the said
clips in position and firmly secures the two halves of the wheel rim together.
Dated the 26th September 1893.
COMPLETE SPECIFICATION.
Improvements in or relating to Wheels and Tyres for Bicycles,
Tricycles, and other Road Vehicles.
We, ABRAHAM WOOD of 55 Bridge Street, Ramsbottom, Jeweller, and
JAMES HAWORTH HILL of Little Holcombe near Ramsbottom, Salesman, both
in the County of Lancaster, do hereby declare the nature of our said 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 refers to improvements in or relating to wheels and tyres for
bicycles, tricycles, and other road vehicles and is designed to allow pneumatic
tyres to be self-closing in case of puncture and to facilitate the removal of the air
tube when necessary. This is accomplished by providing an air or pneumatic tube
of india-rubber with an outer casing or covering of either canvas, cotton fabric,
rubber, or other like material. The air or pneumatic rubber tube is of such a
diameter that when fully inflated without being stretched it will cause the outer
casing or covering to be at its greatest stretch, whereas the air or pneumatic rubber
[Price 81

page_text: tube will not be stretched beyond its normal condition. To produce this result the
inner tube is of such dimensions that when it is fully inflated without being stretched
it merely expands sufficiently to fill the capacity of the outer casing when the latter
is on full stretch. By this means any puncture that may he made in the air or
pneumatic rubber tube will at once close up again owing to its being in its normal
condition and by the pressure exerted by the outer casing or covering. To
facilitate the removal of the air or pneumatic rubber tube we construct the
metallic wheel rim in halves centrally, each edge being provided with bent ends
to receive metallic or other clips that can be removed by sliding them circum-
ferentially to openings or their equivalents provided for the purpose. As the air
or pneumatic tyre is inflated the metallic rim is pressed outwardly, which action
locks the said clips in position and firmly secures the two halves of the wheel rim
together.
Fig. 1 is a part side elevation of a wheel or tyre constructed on the principle
of our invention. Fig. 2 is a section through line A. B, and Fig. 3 is a plan of
underside of Fig. 2.
The india-rubber pneumatic or air tube C is enclosed by the outer casing or
covering D which may be of canvas, cotton fabric, rubber, or other like material.
The air or pneumatic tube C is of such a diameter that when fully inflated it is
not stretched beyond its normal condition and only expands sufficiently to fill the
capacity of the outer casing or covering D when the latter is on full stretch. It
will be seen that owing to the india-rubber air or pneumatic tube C not being on
stretch that in case of puncture the same will at once close again, this being
assisted by the action of the outer casing or covering D being at its full stretch.
The wheel rim E is made in halves as shown in the drawings, the inner edges
being provided with the bent ends G to receive the metallic or other clips H
employed for securing the same together. The metallic or other clips H may be
removed by sliding them circumferentially to the openings I. When the air or
pneumatic tube C is inflated the metallic wheel rim E is pressed outwardly, which
action locks the clips H in position and firmly secures the two halves of the wheel
rim together.
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. In tyres for bicycles, tricycles, and other road vehicles the use of an india-
rubber pneumatic or air tube when inflated that is not stretched beyond its normal
_condition and only expands sufficiently to fill the capacity of its outer casing or
covering when the latter is on full stretch, substantially as described.
2. In pneumatic tyres of wheels for bicycles, tricycles, and other road vehicles
the use and employment of a divided rim provided with slots or openings to admit
of clips, the same being held together by clips when the pneumatic tube or tyre is
inflated, substantially as described and as illustrated in the drawings.
Dated the 23rd June 1894