An Improved Pneumatic Tyre for Cycles and other Vehicles.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
An Improved Pneumatic Tyre for Cycles and other Vehicles.
I, WILLIAM SHEPHARD SHREEVE, of Shrewley, Warwick, Estate Agent, do
hereby declare the nature of this invention to be as follows:-
This tyre is designed to allow of the cycle or other vehicle to be used, even if
the tyre be burst or punctured; and consists of an outer tyre of indiarubber &
canvas, or other suitable material as in ordinary use, but with specially designed
projections thereon which fit accurately into the rim or periphery of the wheel in
the manner of a dovetail, so that the tyre is held in position firmly even when it
is not inflated; the outer tyre has a flap. internally on one edge, which, when the
tyre is in position, covers the joint between the two edges of the tyre which are
held within the incurved rim of the wheel; when the tyre is inflated the flap is
pressed upon the interior of the tyre, over the joint of the two edges, & makes the
tyre airtight.
The tyre may be either a single tyre, or, have an inner tube for inflating it.
In addition there is within the tyre, another tyre, which I call the buffer tyre;
this tyre may be either a tube of india rubber or other air tight material capable
of being inflated in the usual manner, or, a band, or belt of cellular, or spongy
india rubber, fixed to the outer tyre above the flap before referred to (and held in
position also by the dovetail which secures the tyre to the rim) which band belt,
or buffer tyre, is large enough to raise the outer tyre sufficiently beyond the rim
of the wheel, when the tire is not inflated, to prevent its being pressed upon by
the edges of the rim, & being injured thereby; by this means the cycle or vehicle
is supported upon the inner band or buffer tyre in case of puncture, & may be
ridden upon without injury to the outer tyre; and on slippery roads, the outer
tyre may be partially inflated only, so that the inner band, or buffer tyre, is
brought into contact with the outer tyre, and so gives the wheel a direct bearing
upon the buffer tyre & hence upon the ground, and prevent skidding or side
slipping of the cycle or other vehicle.
Dated this Tmontreath day of Tool 1907
An Improved Pneumatic Tyre for Cycles and other Vehicles.
I, WILLIAM SHEPHARD SHREEVE, of Shrewley, Warwick, Estate Agent, do
hereby declare the nature of this invention and in what manner the same is to be
[Price 8d.1

page_text: performed, to be particularly described and ascertained in and by the following
statement:-
This tyre is designed to allow of the cycle or other vehicle to be used, even if
the tyre be burst or punctured, and also to allow of its being easily repaired; and
consists of an outer continuous band or tyre of rubber and canvas or other suitable
material, with special projections on the edges; when the tyre is bent into the
form of a tube, and is placed around the rim of the wheel, the edges abut, and
fit accurately together, and are pressed by the hand into the rim, and are held
together there by the incurved rim of the wheel, and form a dovetail within it.
This dovetail arrangement of the abutting edges, forms a solid cushion of rubber
immediately above the spoke ends inside the rim, and the tyre is thereby held
in position irrespective of any internal air pressure (as in other tyres) and it
cannot be disconnected from the rim simply by deflation from puncture or other
cause; or, the tyre may have projections for fitting into the incurved rim, and be
made wide enough to allow of one edge being folded beneath the other when it is
bent into the form of a tube within the rim, and with a band, or buffer tyre, filling
the space
up
internally between the two sides of the tyre and pressing upon the
overlapping edges (& between the edges of the incurved rim) to make them air
tight and at same time completing the dovetail arrangement within the rim, and
so forming a solid cushion within the rim. When the tyre is made with abutting
edges, I provide a flap on one edge of the tyre which, when the tyre is in position,
overlaps the opposite edge: and I provide a small buffer tyre or band inside the
tyre which embraces the edges of the tyre when in position, and pressing upon
the overlapping joint, makes it air tight. This buffer tyre is also used for the
purpose of allowing the vehicle to be ridden upon when the tyre is accidentally
deflated, and as its circumference externally is greater than that of the rim of the
wheel, it prevents the tyre from coming into contact with, and being injured by
the rim, when the tyre is deflated.
It is evident the tyre cannot be blown off; because the greater the pressure
upon the dovetailed cushion, the more firmly it will be held on the rim.
If desired the tyre may be made simply as an outer cover retaining the dovetail
arrangement, and have an inner tube as in ordinary use for inflation.
On the accompanying drawing,
A is the tyre
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:―
1. The outer cover or single tyre being a continuous band of india rubber or
canvas or other suitable material, having on its edges projections, which, when it
is bent into the form of a tube abut together, and are held in the form of a dove-
tail within the incurved rim of the wheel, either by the abutting edges, or, by the
overlapping edges combined with the buffer tyre; being so held within the rim.
independently of the internal air pressure.
2. The arrangement of the buffer tyre pressing upon the overlapping edges of
the tyre, which assists in making it air tight.