Improvements in Tyres for Wheels.
Year: 1890

page_text: Date of Application, 12th June, 1890
Complete Specification Left, 21st Oct., 1890-Accepted, 22nd Nov., 1590
PROVISIONAL SPECIFICATION.
Improvements in Tyres for Wheels.
We JOHN HENRY BALL Agent and PHILIP LOUIS RENOUF Engineer both of
17 Southampton Buildings in the County of Middlesex do hereby declare the nature
of this invention to be as follows:-
It has been found desirable in the construction of tyres for road vehicles and more
particularly for use in velocipedes to employ a form of tyre that shall have considerable
anti-vibratory power. The ordinary rubber tyre has been enlarged, made hollow,
filled with compressed air, or has had a coiled metallic wire inserted and many other
methods have been adopted for this purpose.
Now by our present invention we seek to increase and distribute the resiliency of
the tyre throughout the circumference of the wheel and we form our tyre of the usual
rubber type but moulded over and enclosing a tube of steel or other suitable material
metallic or otherwise as for instance a core of sponge woodite; or we may use a core
of the aforesaid sponge woodite which may if desired be hollow surrounded by an
outer envelope of some suitable harder material in place of the ordinary rubber tyre.
The core may be endless forming a perfect circle and may or may not have rubber
moulded on the same before the process of vulcanization.
Dated this 12th day of June 1890.
POPPLEWELL & Co.,
17 & 18, Southampton Buildings, London, W.C., Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Tyres for Wheels.
We JOHN HENRY BALL, Agent and PHILIP LOUIS RENOUF, Engineer both of
17 Southampton Buildings 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 :-
It has been found desirable in the construction of tyres for road vehicles and more
particularly for use on velocipedes to employ a form of tyre that shall have con-
siderable anti-vibratory power and for this purpose the ordinary rubber tyre has been
enlarged, made hollow, filled with compressed air or has had a coiled metallic wire
inserted, and many other methods more or less successful have been adopted.
By means of our present invention we seek to increase the resilient powers of the
tyre and distribute the same along the circumference of the wheel and in order to
accomplish this we prefer to use a hollow rubber tyre moulded over or enclosing
within a portion of its inner circumference a tube or hoop or band preferably of metal
which being retained in position by the elasticity of the rubber bearing upon it is
capable of supporting that part of the rubber tyre which comes in contact with the
ground or surface over which the wheel travels, and by yielding therefrom within
the tyre distributes the shocks or effects of such contact along the circumference of
the wheel.
Referring to the accompanying sheet of drawings and to the figures and letters of
reference thereon,
Figure 1 is a section of one form of our tyre in which A is the rubber tyre and B
is a tube of metal, C being the air space.
Figure 2 is a similar section in which a metal hoop D takes the place of the
tube B and
Figure 3 shows the same section of rubber tyre moulded over or enclosing a thin
metal plate or band E.

page_text: 22
In each of the different views it will be seen that the portion of the rubber tyre
marked For the " crown is supported by the tube, hoop, or core and the sides of
the cavity or air space Cmaintained thereby when the said rubber tyre is tightly
bound or attached to the rim of the wheel preferably by a wire or cord G (Fig. 1), a
strip of metal H (Fig. 2) or by several strips or cords I (Fig. 3), as for instance after
the manner described in Letters Patent No. 13511 dated October 13th 1884 and
granted to one John Kemp Starley.
In some cases we may find it desirable to vulcanize the rubber on to the metal core
and we may vulcanize the lower portion of the rubber to the strip H (Fig. 2) used
for tensioning the tyre or not as may be found convenient.
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
-
In tyres for velocipedes or like vehicles the employment of a metal or other stiff
tube, boop, or plate such as B, D, E within a hollow rubber tyre supporting the
"crown" and maintaining the walls thereof when such tyre is firmly secured to the
wheel, for the purpose of increasing the resiliency of the wheel by distributing along
or throughout its circumference the effects of shocks received by that portion in
contact with the ground.
1
L
10:1 J. Orisha 1800
POPPLEWELL & Co.,
17 & 18, Southampton Buildings, London, W.C., Agents for the Applicants.