Improvements in the Rims and Pneumatic Tyres of Cycles or other Vehicles.
Year: 1893

page_text: Date of Application, 2nd Oct., 1893
Complete Specification Left, 2nd July, 1894-Accepted, 18th Aug., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Rims and Pneumatic Tyres of Cycles or other
Vehicles.
We, METHUSELAH BROOKS of Billington, Whalley, in the County of Lancaster,
Engineer, and WILLIAM INGHAM of Clitheroe, in the said county, Coal Merchant,
do hereby declare the nature of this invention to be as follows:-
The object of this invention is to prevent puncture, and increase, as much as
possible, the resiliency of pneumatic tyres.
In carrying out our invention, we form or draw a very thin steel tube of any
required diameter, the said tube being bent in a circle during the process of
drawing our otherwise, and its two ends welded or otherwise secured together so as
to be perfectly air-tight. On the outer surface of the said thin steel tube is now
moulded or formed a covering of elastic rubber, and at any desirable portion of its
surface, the tube is provided with a valve.
This constitutes our pneumatic tyre, over which is then placed the ordinary
thick outside cover of indiarubber or canvas. We allow a space between the
outside rubber cover, and the rubber covered steel tubular tyre, so that all
tendency of the latter to kink will be obviated, by the exceedingly small degree it
will be required to yield to the weight of the rider.
We will now describe how we attach this endless thin steel tubular tyre to the
rim. For this purpose, we hinge or otherwise remove a portion of the rim, so that
the decrease in the circumference of the rim due to the removal of a certain portion
thereof will readily permit of the tyre being got into position. The hinged or
removed portion is then replaced.
The tyre may be effectually prevented from creeping or rolling by any of the
well known means, and by aid of the usual air-pump may be inflated to any desired
pressure.
We would point out that the two ends of the thin steel tube need not necessarily
be joined together, as the rubber which covers it may be made to render it
perfectly air-tight, and in this instance the removal of a portion of the rim to
permit of the tyre being applied will be unnecessary.
Dated this 30th day of September 1893.
F. RICHMOND,
79, St. James Street, Burnley, Agent for Applicants.
COMPLETE SPECIFICATION.
Improvements in the Rims and Pneumatic Tyres of Cycles or other
Vehicles.
We, METHUBELAH BROOKS of Billington, Whalley, in the County of Lancaster,
Engineer, and WILLIAM INGHAM of Clitheroe, in the said county, Coal Merchant,
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
much as
statement :-
The object of this invention is to prevent puncture, and increase, as
possible the resiliency of pneumatic tyrės.
In carrying out our invention, we form or draw a very thin tube of steel or other
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page_text: -
metal of any required diameter, the said tube being bent in a circle during the
process of drawing or otherwise, and its two ends welded or otherwise secured
together so as to be perfectly air-tight.
On the outer surface of the said thin tube of steel or other metal is now moulded
or formed a covering of elastic rubber, and at any desirable portion of its surface,
the tube is provided with a valve.
This constitutes our pneumatic tyre, over which is then placed the ordinary
thick outside cover of indiarubber or canvas. We allow a space between the
outside rubber cover and the rubber covered steel tubular tyre, so that all tendency
of the latter to kink will be obviated, by the exceedingly small degree it will be
required to yield to the weight of the rider.
We will now describe how we attach this endless thin steel tubular tyre to the
rim. For this purpose, we hinge or otherwise remove a portion of the rim, so that
the decrease in the circumference of the rim due to the removal of a certain portion
thereof will readily permit of the tyre being got into position. The hinged or
removed portion is then replaced.
The tyre may be effectually prevented from creeping or rolling by any of the
well known means, and by aid of the usual air-pump may be inflated to any desired
pressure.
In the accompanying drawings,
Fig. 1 is a sectional perspective view of a pneumatic tyre constructed in
accordance with our invention.
A is the inner pneumatic tube composed of very finely drawn steel or other metal
tubing of any required diameter. The tube is preferably endless and weldless
being bent in a circle during the process of drawing or otherwise and its two ends
welded together so as to be air-tight. In the diagram (Fig. 1) the outer surface
of the steel tubular tyre is shewn covered with a thin skin or tube B of rubber or
other material to prevent the possibility of moisture penetrating the outer or
ground cover and causing the steel or metal tyre to rust. In this view, the outer
cover C is shewn as formed double or with a space D all along the tread to increase
the elasticity of the tyre and prevent kinking of the steel tube, and is secured by
the Dunlop fastening, which however forms no part of the present invention.
Fig. 2 is a sectional end elevation of a slightly modified form of our invention, in
which the steel tubular pneumatic tyre A is completely enclosed within the outer
cover C, which may then be cemented to the rin E. The steel or other metal
tube A may be coated or plated on its outer surface with nickel or other metal to
prevent rust, thus dispensing with the outer rubber skin B described in the preceding
arrangement. Here, the outer cover is also formed double at the tread to increase
the resiliency of the tyre.
In Fig. 3 is shewn another modification of our invention, in which the steel
tube A is enveloped in the rubber skin B whilst the outer cover C completely
embraces the rim F, to which it is secured by cement or other means.
Figs. 4 and 5 illustrate the method which we preferably employ for attaching
our improved endless steel tubular tyre to the rim. The circumference of the rim
is decreased by removal of certain portion thereof, so that the steel tubular tyre
may be got into position. We split the rim in one or any number of places round
its circumference, the split portions of the rim G G due to the spring of the spokes
overlapping each other, or assuming the position seen in Fig. 4. This necessarily
brings about a considerable decrease in the circumference of the rim; and enables
us to mount the endless steel tubular tyre thereon. When this has been got in
place the two ends G G of the rim are brought flush (as seen in Fig. 5) and whilst
in this position, a plate H is secured to them by screws, so that they cannot
possibly become displaced, or instead a hinged piece of metal may be secured to
the split ends G G of the rim.
Our improved endless metal pneumatic tube in all the foregoing arrangements is
furnished with a valve to receive a supply of air of any given pressure from the
nenal air numa

page_text: 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. The improved pneumatic tyre consisting of endless thin steel or other metal
tubing, substantially as shewn and described.
2. The improved means of decreasing the circumference of the rim of a cycle
wheel, so that the tyre may be mounted or removed, substantially as described and
illustrated.
3. The combination with an endless steel or other metal tubular tyre of a thin
rubber skin B or alternative means described to prevent rust, of outer cover C
formed double with space D to increase resiliency, and of means for decreasing the
circumference of the rim to admit of the steel tube being mounted thereon or
removed, substantially as described and illustrated.
Dated this 26th day of Jun 1001
F. RICHMOND,
12, Standish Street, Burnley, Agent for Applicants.
F. RICHMOND,
12, Standish Street, Burnley, Agent for Applicants.