Improvements in Elastic Wheel Tyres for Velocipedes and other Wheeled Vehicles.
Year: 1895

page_text: Date of Application, 24th July, 1895
Complete Specification Left, 24th Apr., 1896-Accepted, 13th June, 1896
PROVISIONAL SPECIFICATION.
Improvements in Elastic Wheel Tyres for Velocipedes and other
Wheeled Vehicles.
I MATTHEW STOTT of the Cowhill Iron Works, Oldham, in the County of
Lancaster, Screw Bolt Maker, do hereby declare the nature of this invention to
be as follows:-
My said invention refers to elastic tyres for application to the wheels of bicycles,
tricycles and other wheeled vehicles. The object of the invention is to obtain an
elastic tyre which while possessing all of the requisite softness and resiliency is
not liable to break down by puncture or cutting as in the case of pneumatic
tyres.
In carrying the invention into effect I use an ordinary trough or other suitably
shaped rim and in conjunction therewith I employ a spirally coiled spring or series
of spirally coiled springs the coils of the spiral or spirals running in the direction
of the circumference of the wheel. In using a single spring for example I would
secure one extremity of the spring to one side of the rim and the other extremity to
the other side the intervening peripheral spiral coils being so arranged as to assume
an arched or semi-circular shape in cross section. Instead of a single spring
I might however use several springs of one coil, or less than one coil or it might
be of more than one complete coil apiece, the general cross section of the coils in
all cases however presenting in all cases the required arched or crown shape.
When several such springs are used the weight is more evenly distributed among
the several points of attachment. The coil or coils thus secured to the rim is or
are covered by a thickness or outer cover made of rubber or other suitable material
and secured to the rim in any suitable manner. This provides the necessary soft
and resilient tread. To support and strengthen the spiral coil or coils when such
is considered to be necessary I may introduce an inner lining to the coil or coils
the said lining consisting of a thin curved band of steel interrupted in its
circumference so as to yield inwards.
A wheel tyre constructed according to my improvements is resilient not only in
the direction of its circumference but also in cross section. As the pneumatic
principle is not made use of, the user is never troubled by deflation and collapse by
puncture or cutting.
4
COMPLETE SPECIFICATION.
Improvements in Elastic Wheel Tyres for Velocipedes and other
Wheeled Vehicles.
I MATTHEW STOTT of the Cowhill Iron Works, Oldham, in the County of
Lancaster, Screw Bolt Maker, 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 and accompanying drawings
My said invention refers to elastic tyres for application to the wheels of bicycles,
Price 8d1

page_text: tricycles and other wheeled vehicles. The object of the invention is to obtain an
elastic tyre which while possessing all of the requisite softness and resiliency
is not liable to break down by puncture or cutting as in the case of pneumatic
tyres.
In carrying the invention into effect I use an ordinary trough or other suitably
shaped rim and in conjunction therewith I employ a spirally coiled spring or series
of spirally coiled springs the coils of the spiral or spirals running in the direction
of the circumference of the wheel. In using a single spring for example I would
secure one extremity of the spring to one side of the rim and the other extremity
to the other side the intervening peripheral spiral coils being so arranged as to
assume an arched or semi-circular shape in cross section. Instead of a single
spring I might however use several springs of one coil, or less than one coil or it
might be of more than one complete coil apiece, the general cross section of the
coils however presenting in all cases the required arched or crown shape. When
several such springs are used the weight is more evenly distributed among the
several points of attachment. The coil or coils thus secured to the rim is or are
covered by a thickness or outer cover made of rubber or other suitable material
and secured to the rim in any suitable manner. This provides the necessary
soft and resilient tread. To support and strengthen the spiral coil or coils when
such is considered to be necessary 1 may introduce an inner lining to the coil or
coils the said lining consisting of a thin curved band of steel.
A wheel tyre constructed according to my improvements is resilient not only in
the direction of its circumference but also in cross section. As the pneumatic
principle is not made use of, the user is never troubled by deflation and collapse by
puncture or cutting.
In order that my said invention may be properly understood I will now proceed
to describe the same more particularly, reference being had to the annexed sheet of
drawings and to the letters and figures marked thereon.
Fig. 1 is a side view of a wheel constructed in accordance with my invention, a
portion of the outer cover being removed to show the coils and other parts
beneath.
Fig. 2 is an edge view of the wheel, the coils being shown in black to make them
more distinct.
Fig. 3 is a cross section of the rim and tyre drawn to an enlarged scale.
Fig. 4 is a side view of a portion of the rim and tyre, the outer cover being
removed at the side to show the rim and method of securing the ends of the
coils.
Fig. 5 is a cross section of the rim with the eyes or snugs to which the ends of
the wire coils are secured.
.
Fig. 6 is a cross section of the inner curved annular shield upon which the coils
rest.
>
Fig. 7 is a view of the said shield similar to Fig. 6 but showing corrugations
which form channels to receive the spring coils.
The main body of the wheel is constructed in the ordinary manner with a trough
or other shaped rim a the latter appearing most clearly in section in Fig. 3 and
separately in Fig. 5. Attached to the rim in any suitable manner is an outer
covering b of rubber or leather or other suitable flexible material with non-slipping
surface if required. Beneath the cover I place the resilient spiral spring coil or
coils c, the coils running in the direction of the circumference and crossing the
crown of the wheel.
Beneath the said spiral coil or coils I place a curved supporting shield d which
constitutes a complete ring running entirely round the wheel beneath the coils and
serving to support the coils and keep them in position. This shield appears in
Fig. 3 and also separately in section in Fig. 6.
I might use one endless spiral coil but preferably I use a series of separate coils
attached at different points in the circumference of the rim. Thus I distribute the
different points of suspension and make the wheel more evenly elastic all round.

page_text: For example suppose I were using several coils, the first coil c would be secured to
the rim a at a' and then led spirally round the wheel, crossing the ridge of the
crown and being finally secured to the rim at a 2 as shown for example in Fig. 4
where the two ends of the coil are shown. In the same manner, suppose as in
Figs. 1 and 2 six such coils c were used, there would be six duplicate points of
attachment so that the weight on the wheel and coils is very evenly distributed.
Three of the said six points of attachment are shown in dotted lines in Fig. 1 and
Fig. 4 is an indication of one of the same to a larger scale. To give the necessary
hold fast the interior of the rim a is formed with snugs a¹ and a 2 through which the
screwed ends of the coils are passed and in which they are secured by jamb nuts c¹
as clearly appears in Fig. 4. I do not however confine myself to this particular
mode of securing the ends of the coil or coils c. In order to assist in keeping the
coils c in their proper relative positions I might as shown in Fig. 7 corrugate or
form the shield d with spiral grooves coinciding with the coils c, the coils.
occupying the said grooves so that any displacement of the coils is impossible.
с
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Although I have shown and described the tread of the tyre as arched or rounded
it might be made flat.
The spiral coils are preferably made of suitably tempered steel but they may be
made of any other suitable metal or material. If any coil of the series should
become damaged or should prove to be deficient it can easily be removed and.
replaced without disturbing the others. My improved wheel not being on the
pneumatic principle is not subject to disablement from puncture or cutting.
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 what I
claim is.
1. In the manufacture of elastic wheel tyres the employment of one or more
circumferential spiral spring coils, applied and acting as hereinbefore described and
illustrated.
2. As constituting an elastic wheel tyre the combination of a wheel rim such
as a, the cover b, elastic spiral coils c, and the shield d, all arranged and acting as
hereinbefore described.
3. As a feature in the herein before described wheel tyre the shield d either plain.
as in Fig. 3 and 6 or corrugated or grooved as in Fig. 7.
Doted this 22nd day of Amil 1806