Improvements relating to Tyres for the Wheels of Cabs, Carriages, Omnibuses, and like Vehicles.
Year: 1895

page_text: Date of Application, 29th Mar. 1895
Complete Specification Left, 18th Nov., 1895-Accepted, 21st Dec., 1895
PROVISIONAL SPECIFICATION.
Improvements relating to Tyres for the Wheels of Cabs, Carriages,
Omnibuses, and like Vehicles.
We, JOHN BAPTISTE STERCKX, of 26 Ampton Street, Coach and Tyre Smith,
and JOHN HANCOCK NUNN of 266 Goswell Road, Rubber Manufacturer, both in
the County of London, do hereby declare the nature of this invention to be as
follows:-
This invention relates to tyres for the wheels of cabs, carriages, omnibuses and
like vehicles.
Hitherto the solid rubber tyres employed with rims having undercut grooves at
the sides for holding the rubber tyre in place have not been endless but have been
formed of a straight length of rubber of suitable section, the ends of which are
usually fastened together by rubber solution or otherwise when the rubber is inserted
in the rim. This method of construction entails the waste of several inches of the
tyre which are cut off when fitting the same; it has also been found that the tyre
tends to wear more quickly at the place where the two ends are joined than
elsewhere, and the ends are likely to come out if caught in tram lines; moreover
the said joint is a weak point at which by means of the introduction of a suitable
tool between the butt ends of the rubber tyre the latter can be raised and the tyre
thus extracted and stolen, as has been occasionally done.
According to our invention we obviate these disadvantages by the employment
with a rim having undercut grooves at the sides of an endless rubber tyre which
is sprung on to the rim and secured by the said undercut grooves and by cement or
solution. The rubber tyre is moulded in an endless band of the required diameter to
fit the wheel.
Our invention prevents the waste of the ends of rubber that the old method of
construction entailed and it renders the fraudulent extraction of the tyre very
difficult.
1 1007
Improvements relating to Tyres for the
Omnibuses, and like Vehicles.
We, JOHN BAPTISTE STERCKX, of 26 Ampton Street, Coach and Tyre Smith,
and JOHN HANCOCK NUNN of 266 Goswell Road, Rubber Manufacturer, both in
the County of London, 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 relates to solid india rubber tyres for the wheels of cabs, carriages,
ibuses and like vehicles.

page_text: Hitherto the solid india rubber tyres employed with grooved metal rims having
undercut sides for holding the rubber tyre in place have not been endless but have
been formed each of a straight length of rubber of suitable section, the ends of
which abut and are usually united by rubber solution or otherwise after the
rubber tyre is inserted in the rim. To ensure the proper abutment of the ends of
the rubber it is necessary that the strip of rubber be longer than that actually
required to extend around the wheel, the overlapping piece being cut off when
finally fitting the ends together. This method of construction therefore entails
the waste of a piece of rubber often several inches in length. Moreover it is
found that the tyre tends to wear more quickly at the place where the two ends
are joined than elsewhere, and the ends are liable to come out of the rim if caught
in the grooves of tram lines for example. Further, by means of a suitable tool
introduced at the point between the ends of the rubber tyre, the said ends can
be raised and the tyre can be thus removed and stolen, as has been occasionally
done.
According to our invention we obviate these disadvantages by the employment
with a grooved rim having undercut sides of an endless rubber tyre in lieu of a tyre
made from a straight length of rubber as heretofore; the tyre is secured in place
by the undercut sides and by cement or rubber solution.
In Figure 1 of the accompanying drawing we have shown a cab wheel and one of
our improved tyres partially inserted in the rim of the wheel.
Figure 2 is a cross section of the rim and tyre on a larger scale.
A is the wheel fitted with a grooved metal rim B undercut at the sides as indicated
at B', B; C is the rubber tyre which has a section adapted to fit tightly in the
undercut sides of the rim of the wheel nd is made endless as shown. The rubber
tyre is made by moulding the same in suitable dies or moulds, in the ordinary
manner, and is of such a diameter as to properly fit the wheel. It is inserted in
the rim by the same means as those used for inserting solid rubber tyres as heretofore
made.
Our invention avoids the waste entailed by the old method of construction and it
renders the fraudulent extraction of the tyre very difficult, besides extending the
life of the tyre.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
For a vehicle wheel fitted with a grooved rim having undercut sides, a solid
rubber tyre moulded in the form of an endless band and shaped to fit the undercut
sides of the rim, substantially as described, and for the purposes specified.
Dated this 16th day of November 1895.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicants.