An Improved Tyre for the Wheels of Cycles and other Vehicles, Designed to give a Thorough Resilient Action and to do away with the Nuisance of Punctures.
Year: 1898

page_text: Date of Application, 14th Oct., 1898
Complete Specification Left, 14th July, 1899-Accepted, 30th Sept., 1899
PROVISIONAL SPECIFICATION.
An Improved Tyre for the Wheels of Cycles and other Vehicles,
Designed to give a Thorough Resilient Action and to do away
with the Nuisance of Punctures.
FRANCIS FORDHAM MOTE, Engineer, King's Lynn, Norfolk, JOHN JAMES
HERDMAN, Merchant, King's Lynn, Norfolk, JAMES MCLAREN, Supt. Engineer,
Sandringham, Norfolk, WILLIAM BRADFIELD BATH, Carriage Builder, King's
Lynn, do hereby declare the nature of this invention to be as follows:-
-
The improvement in the tyre is that it depends entirely upon spring steel for
the resilient action, instead of air compression as in pneumatic tyres, and although
it may be punctured, and pierced through the tyre, it will not make any difference
in the efficiency of the tyre, and it may be ridden upon "although punctured every
day" until the outer cover is worn out.
The tyre is built up with a foundation made of steel wire "suitably tempered."
The wire which is almost of the finest gauge is turned into a spiral of a small
diameter but of a considerable length.
Then this spiral is treated in the same way as the single wire, and thus turned
into a larger spiral suitable for the size of the tyre required. The result is when
the foundation or spiral is completed, that a most sensitive action is obtained, and
the tyre almost indistructable. It is designed to cover the spiral foundation with
a composition of rubber and canvas. Hide or other material, having its interior
corrugated each one of the corrugations to receive or make a bed for each layer
or rib of the spiral. The corrugations being especially prominent next the tread
of the tyre. The fixture of tyres will be by means of one or two half turn studs
or buttons into elongated holes in the rim. In case of heavy vehicles such as
cabs, omnibuses and such like, a tyre-protector rim will be used to avoid abrasion
from sidewalk curb stones and so forth.
1000

page_text: JAMES MCLAREN, of Sandringham, Engineer, and WILLIAM BRADFIELD BATH, of
Broad Street, King's Lynn, Coach Builder, all in the County of Norfolk, 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 elastic uninflated tyres for velocipedes and other road
vehicles, said tyres comprising an outer cover enclosing a spiral spring the con-
volutions of which are themselves composed of a spiral coil. An important
feature of our invention is a shield for protecting the cover and for keeping the
convolutions of the spiral spring in proper position. Another feature relates to
improved means for keeping the spiral spring closely applied to the rim of the.
wheel and also for keeping the convolutions properly spaced on the side adjacent
to the rim, and to prevent creeping of the tyre on the rim. Our improved tyre
is applicable to rims of different shapes and can be applied to most existing tyres
having detachable covers.
Referring to the accompanying drawings, which illustrate our invention,
Fig. 1 is a side view of a portion of a cycle, wheel and tyre having our inven-
tion applied thereto, the cover being partially removed to show the interior.
Fig. 2 is a perspective view of a portion of the shield hereinafter described..
Fig. 3 is a cross section of the tyre, and
Fig. 4 is an underside view of a portion of the tyre showing the method of
fastening the cover around the spring.
Like letters of reference denote corresponding parts in the several figures.
a is the rim of the wheel, is the cover of the tyre, and c is a spiral spring
enclosed by the cover. The convolutions of the spring are themselves composed
of a spiral coil, the ends of which may be united to form an endless ring.
e
Between the spring c and the tread portion of the cover b is a shield d made
from a flat band of thin steel shaped as indicated in Fig. 2. The bent portions
of the shield act like hinges and allow the shield to bend readily. At the edges
of the shield are a number of teeth f which are bent inwardly as shown and are
adapted to pass between the convolutions of the wire forming the spring c. These
teeth keep the shield in place and prevent it from moving laterally. In addition
to the sille teeth f we also punch out of the shield other teeth g at suitable
intervals and press the points inward. The convolutions of the spiral spring rest
between these teeth gas indicated in Fig. 1, and are thereby kept the proper
distance apart.
To keep the spring closely applied to the rim a, and to prevent creeping of
the tyre on the rim, we employ a wire passing round the rim and soldered or
otherwise fastened to the convolutions of the spring. One end of the wire is
formed with a hook ; which passes through a hole in the rim, and hooks into a
recess, o in a block m which rests against the rim, and the other end of the wire
is screw threaded and passes out through said hole k and is secured by a nut
by means of which the wire can be tightened. The said nut works in a recess in
the block m and holds the latter against the rim.
To protect the coil spring from damp which would tend to rust same, we may
cover it, together with the plate d, with waterproof cloth or canvas.
A convenient mode of fastening the cover around the spring is by means of
lacing on hooks n as indicated in Fig. 4 although any other suitable method may
be adopted.
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:-
1. A tyre consisting of an outer cover enclosing a spiral spring, the convolutions
of which are themselves composed of a spiral coil, and enclosed in an inner cover
of waterproof canvas, substantially as described.

page_text: 2. In combination with the tyre claimed in the preceding claiming clause, the
shield d, formed with bent portions e to increase its flexibility, substantially as
described.
3. The combination with the spiral spring c of the shield & having side teeth f
to lock into the convolutions of the spring and other teeth g to engage with the
sides of the convolutions, substantially as, and for the purpose, specified.
4. The block m resting against the inner face of the rim in combination with
the wire soldered or otherwise fastened to the inner circumference of the spiral
spring, and having one end hooked into a hole in the block, and the other end
tightened by means of a nut working in said block, substantially as described,
and for the purpose specified.
5. A tyre constructed substantially as described with reference to the accom-
panying drawings.
The love of T..1.. 1900