Improvements relating to Pneumatic Tyres.
Year: 1895

page_text: Date of Application, 8th Mar.. 1395
Complete Specification Left, 11th June, 1895-Accepted, 6th July, 1895
PROVISIONAL SPECIFICATION.
Improvements relating to Pneumatic Tyres.
I, GEORGE WACKERBARTH, of 92 Gracechurch Street in the City of London,.
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has for its object to construct pneumatic tyres so that they may
be more easily fixed to and detached from the rims of wheels. This I effect by
forming a loop near une end of each of the wires of the tyre, the other end being
bent at a certain angle so as to take into the said loop. The canvas of the tyre is
cut to allow the bent end of the wire to protrude, and is also slightly cut so as to
expose the loop. When the bent end is hooked over the loop, the continuation of
When the tyre
the looped end will keep the tyre in shape between the two cuts.
is inflated the pressure of the air will keep the loop firmly fixed over the bent end,
and upon deflating the tyre the wire becomes loosened and the tyre can be easily
detached. To attach the tyre it is simply necessary to fix it in position on the rim
and inflate it when the pressure will keep the wires tightly drawn round the rim.
A modification of my invention consists in bending each end of the wire off at
right angles (the length of the part thus bent off being about half an inch), and
further bend these into semi-circular shape. One end is bent to the right and the
other to the left, so that they may engage. The pressure caused by the inflation
will have the same effect as in the previous arrangement. An extra strip of wire.
may be used to keep the tyre in shape between the points where the ends of the
wire leave the canvas, or any other suitable means may be used to effect this.
This invention may be applied to any wired-on detachable tyres at present
in use.
COMPLETE SPECIFICATION.
Improvements relating to Pneumatic Tyres.
I GEORGE WACKERBARTH, of 92 Gracechurch Street, in the City of London,
Engineer, 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 aud by
the following statement :-
This invention has for its object to construct pneumatic tyres, so that they may
be more easily attached to and detached from the rims of wheels.
This I effect by forming a loop in each of the wires of the tyre, and I bend one
end of each of the wires, at a certain angle, so as to take into the said loop, when
the wire is in position.
The canvas of the tyre is cut to allow the bent end of the wire to protrude, and
is also cut, so as to expose the loop.
When the bent end is hooked into the loop, the continuation of the wire beyond
the aforesaid loop (when the loop is not formed at the end of the wire) will keep
the tyre in shape between the two cuts. This of course applies to each of the wires.
This invention may be applied to wired on detachable tyres, at present in use.
7
011

page_text: In order that my said invention may be more clearly understood I will now
proceed to describe the same with reference to the sheet of drawings accompanying
this Specification, in which
Fig. 1 shews, a portion of a tyre with the rim broken away, representing the
method of securing the wires on to the rim, according to my invention; Fig. 2
shews a detail hereafter referred to.
The same letters of reference are employed to denote the same parts in both
the views:-
a shews the outer covering of the tyre, b the air bag, c shews one of the wires
employed for securing the outer covering a to the rim d. This wire is hooked at
one end e, and has a loop f formed in it. The end e and loop fare shewn detached
at Fig. 2. The outer covering a is cut at g to allow of the hooked end e of the
wire c to be passed through the same. A cut is also made at h to allow of the
loop fto be passed through.
In order to attach a tyre to the rim, after having inserted the wires cc in
the pockets ii of the outer covering a (only one of which wires and pockets is
shewn on the drawing) these wires are placed in position in the grooves of the rim,
and the hooked ends ee hooked into the loops ff, before, the tyre is inflated. The
tyre is then inflated, and will be firmly secured to the rim.
In order to detach a tyre having my improvements adapted thereto, it is simply
necessary to deflate the same, and to unhook the wires.
It will be seen that the wire.c is extended beyond the loop f, this is done in order
that there may be wire, throughout the pockets i of the outer covering. Or the
same effect may be produced by having more than one turn of the wires round the
rim, in which case the wire need not be extended beyond the loop.
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. In wired on pneumatic tyres, a loop formed in each of the wires, and a hook
at one end thereof, for the purposes set forth.
2. The improvements relating to pneumatic tyres, substantially as and for the
purposes set forth.
Dated this Eleventh day of June 1895
BROWNE & Co.,
9 Warwick Court, Gray's Inn, London, W.C., Agents for the Applicant.