Improvements in Tyres for Cycle and other Vehicle Wheels.
Year: 1897

page_text: Date of Application, 16th Nov., 1897-Accepted, 22nd Jan., 1898
COMPLETE SPECIFICATION.
Improvements in Tyres for Cycle and other Vehicle Wheels.
We, ROBERT GRAHAM, Black Friars Street, Carlisle, Engineer, and JOHN GORDON
BARBOUR, 95, Newgate Street, Newcastle-on-Tyne, and 26, Aglionby Street,
Carlisle, Clothier, 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 improvements in tyres for cycles and other vehicle
wheels and has for its object to obviate the inconveniences appertaining to the use
of ordinary pneumatic tyres whilst at the same time maintaining or increasing
the advantages of such tyres.
For this purpose we provide our improved tyre with an endless coiled spring
encased in the body of the tyre in such a manner as to give it the desired resiliency.
The said coiled spring is preferably formed of bevelled steel spring wire of about 1lb.
in weight, but it may be of other suitable material. This endless coil is encased in
a covering of blocked felt or similar material bound diagonally around the same,
and is kept from shifting by means of a steel wire passing through the same and
engaging at each end with a screw tightener or fastener.
The endless tube thus formed by the encased spring coil is enclosed within an
outer cover of blocked india-rubber secured to the rim of the wheel in the ordinary
manner. This cover is formed with a beading or tread of about one .half an inch
in width by a quarter of an inch in depth and is practically punctureless.
And in order to clearly understand our said invention we will describe the same
with reference to the accompanying sheet of drawings in which Fig. 1 is a side
elevation, partly in section, of a wheel tyre and rim according to our invention, and
Fig. 2 is a full size cross section of the tyre.
a represents the endless coiled steel spring, and 6 is the steel wire passing through
the same to prevent shifting and whose ends are connected together by a screw
tightener or fastener bl. c is the covering of blocked felt wound diagonally around
the coil a as shown in Fig. 1 d is the outer cover of blocked india-rubber enclosing
the coil a and covering c and formed with the beading or tread, the said cover
being secured to the wheel rim e in the ordinary manner.
By means of our improved construction of tyre a firm and resilient action is
provided, the coiled spring maintaining the tyre in an extended condition whilst
at the same time giving the desired elasticity, and the said tyre being punctureless
obviates the inconveniences attendant upon the use of ordinary pneumatic tyres.
Having now particularly described and ascertained the nature of our said in-
vention, and in what manner the same is to be performed, we declare that what we
claim is:-
(1) In tyres for cycle and other vehicle wheels constructing the same of an end-
less coiled steel spring bound or encased with blocked felt and enclosed within an
outer cover of blocked india-rubber substantially as described and for the purposes

page_text: (2) In cycle and other vehicle tyres the combination of an endless coiled steel
or other spring wire a, steel wire b, screw tightener or fastener 6', diagonally
bound blocked felt covering c, and blocked india-rubber cover d formed with a
beading or tread d¹, substantially as described and for the purposes specified.
(3) The improved wheel tyre substantially as described and shown in the accom-
panying sheet of drawings."
Dated this 16th dow of Nawamba 1007
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.