An Improved Method of Fastening Tyres on Velocipede and other Wheels.
Year: 1889

page_text: Date of Application, 1st Mar., 1889
Complete Specification Left, 26th Nov., 1889-Accepted 28th Dec., 1889
PROVISIONAL SPECIFICATION.
An Improved Method of Fastening Tyres on Velocipede and other
Wheels.
JOHN HOWES and GEORGE NEVILLE HOWES of 13 Regent Street Cambridge Cycle
Agents and Manufacturers do hereby declare the nature of this invention to be as
follows:-
We take a sufficient length of india rubber of the desired sectional area, with a hole
made throughout its entire length. We then pass a plain wire (steel preferably) through
this, and join the two ends by crossing them and twisting each backwards forming
two eyes, or simply interlacing and soldering if desired, taking care that the circle
thus formed shall be somewhat smaller than that of the rim for which it is intended.
The tyre can now be sprung on to the rim, and no cement will be required.
COMPLETE SPECIFICATION.
An Improved Method of Fastening Tyres on Velocipede and other
Wheels.
We, JOHN HOWES and GEORGE NEVILLE HOWES of 13 Regent Street Cambridge,
Cycle Agents and Manufacturers, 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:-
We take a sufficient length of india rubber of the desired sectional area, with a hole
made throughout its entire length, we then pass a plain wire (steel preferably) through
this, and join the two ends in any convenient inanner, taking care that the circle thus
formed shall be somewhat smaller than that of the rim for which it is intended. The
tyre can now be sprung on to the rim and no cement will be required.
The way of joining the wire which we prefer is shown in side elevation in Figures 1
and 2 of the drawings and in plan in Figure 3, the two ends of the wire a being
passed through holes in a short link band headed. The advantage of this method is
that the length of wire required for the completed tyre can be judged and cut with
great accuracy.
The method of procedure is as follows:-Pieces of wire and india rubber tube are
cut of such lengths that in the completed tyre the wire shall be in tension whilst the
india rubber is in compression. The advantage of this is that the tyre is held securely
in place without strain upon the rubber so that if the latter is cut by a stone there is
no tendency for the cut to enlarge as is the case with ordinary tyres where the india
rubber is in tension.
The length of the tube should be about longer than that of the complete tyre
whilst the wire should be as short as possible but it must be long enough to allow the
finished tyre to be sprung into the groove in the wheel, with the section of rubber
shown the wire should be about one inch longer than the bottom of the groove of an
ordinary velocipede wheel to which the tyre is to be applied. The wire is next inserted
into the india rubber tube and the ends cc of the tube are drawn back upon the wires
as shown in Figure 2 and the wire is secured as above described.
The india rubber tube is then pulled round upon the wire and when the ends of the
wire and the link b have entered for some distance into the tube the ends c c of the
tube are brought together as shown in Figure 1 and are preferably cemented.
Lastly the tyre is sprung onto the wheel for this purpose we find it convenient to
employ Hookbam's well known machine which is in general use for springing on his
helical spring wire tyres.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we would state that we are
aware that it has before been proposed to secure a tubular tyre by means of an
internal wire but it has never been suggested to make such tyres in such a manner
and of such materials that they can be sprung on but it has always been suggested to
tighten the wire after the tyre is in place. It is however then impossible to put
sufficient tension on the wire to properly secure the tyre because if the wire were drawn
tight enough (assuming this to be possible after the tyre is on) the friction of the
india rubber on the wheel would prevent the ends of the tube being brought
together. We are also aware that it has been proposed to make a tyre of tubular
india rubber containing a metallic wire in the form of a spring and that such tyres
have been sprung onto the wheel. We make no claim to these arrangements but
what we claim is :-
The improved method of fastening tyres on velocipede and other wheels consisting
of cutting suitable lengths of india rubber tube and plain straight wire, threading the
wire through the tube, joining the ends of the wire, bringing the ends of the tube
together and ther springing the tyre onto the wheel substantially as described.
Dated this 22nd day of November 1889.
JOHN HOWES.
GEORGE NEVILLE HOWES.