Improvements in Tyres.
Year: 1893

page_text: Date of Application, 24th June, 1893-Accepted, 26th Aug., 1893
COMPLETE SPECIFICATION.
Improvements in Tyres.
I MOSES JAMES ADAMS Engineer Peasholme Green York 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:―
My improvements consist in the use and arrangement of a suitable flexible
material in the form of springs so designed that the wheel to which the tyre is
attached shall present a yielding or compressible surface to the ground over which
it travels.
By preference I use a steel spiral spring of wire or flats but any suitable
material of which a spring may be formed may be employed this spring is
partly or completely covered by rubber or other material. Its convolutions
encircle the wheel and are sufficiently close together to present an even bearing
surface to the ground and as the wheel revolves to which the tyre is attached
that part which was first directly under the weight of the wheel and vehicle
on which the wheel is fixed and where the spring was therefore somewhat
Hattened by the weight will change its relative position and the flattened tyre will
regain its normal shape another part in turn becoming slightly flattened and taking
its natural form as the wheel revolves. My tyre may be formed by detached
circular or otherwise shaped spring rings or these may be connected and various
other forms adopted but that I prefer is the spiral form of flat steel with its
convolutions covered or partly covered by a rubber casing.
I do not bind myself to any particular section of spring or tyre it being sufficient
for my purpose that a suitable spring be used and a proper case or covering.
Reference to my drawings will make my intention clear.
A & B are two wheels shewn in elevation in both a portion of the covering of the
tyre is removed to shew my spring arrangement under it. In A the continuous
spiral spring is shewn C being an enlarged drawing of a portion of the same shewing
covering spring and felloe of wheel the convolutions are shewn more plainly than in
the small drawing A. At B the wheel is fitted with spring of another form the
spring rings named before these also are shewn to a larger scale at D. At G I shew
in section the spring partly covered by the rubber cover the felloe of the wheel
completing the covering E shews the rubber covering completely enveloping the
spring F is an example of a differently shaped spring with covering and felloe of
wheel any desired formed or section may be adopted according to circumstances.
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 I am
aware that it has been previously proposed to form an elastic tyre for a wheel
of a helical spring partially covered by a leather canvas or other flexible or elastic
band of flat or tapering section and that what I claim is
1st. The use of a spring of suitable metal enveloped by and in combination with
a case or covering partial or complete the whole forming the tyre of a wheel.
2nd. The use of a spiral spring the convolutions of which shall encircle the wheel
the same forming with casing or cover a spring or flexible tyre.

page_text: 3rd. The use of a series of circular or otherwise shaped bands or springs connected
together or detached enveloped in part or completely by a suitable case or cover to
form the tyre of a wheel.
4th. The general arrangement and design of a spring tyre as herein described and
illustrated or an equivalent arrangement though differing in conformity substantially
the same.
Dated this Twenty-second day of June 1893.
MOSES JAMES ADAMS,
Peasholme Green, York, Engineer.