Improvements in rheumatic Tyres.
Year: 1897

page_text: Date of Application, 9th Oct., 1897
Complete Specification Loft 10th Nov. 1897--Accented 11th Dec. 1897
Improvements in rheumatic Tyres.
We, WILLIAM BENJAMIN SPIKINS of 34 Western Road Hove, Merchant, au 1
ALFRED HERBERT MAYES of 31 Western Road Hove Sussex, Electrician. do
hereby declare the nature of this invention to be as follows:-
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Inside a hollow pneumatic tyre we place several short cylindrical pneumatic
air-bags arranged in series, that is to say two or three connected together by short
tubes in such a way that air can be drawn from No 1 to No 2, and from No 2
to No 3 by the pressure of the wheel as it rotates. A valve in the connecting
tube prevents the return of the compressed air, and an outlet in No 3 bag opens
into the outside tyre, and the latter is provided with a safety valve to avoid
excess of pressure. No 1 can be filled in the usual way with an inflator, at
starting, but will draw in air automatically as it is emptied or partially emptied
into No 2 by the compression of the wheel. Inside these bags we place flexible
steel rings at suitable intervals to help restore them to their proper shape when
deflated or depressed. These rings are so thin as not to affect undesirably the
resilence of the tyre and they serve as regulators of the exhaust action of the
compression before-mentioned.
S. S. BROMHEAD
Agent for Applicant,
171 Queen Victoria St. London.
We, WILLIAM BENJAMIN SPIKINS of 34 Western Road Hove, Merchant; anl
ALFRED HERBERT MAYES of 31 Western Road Hove Sussex, Electrician, do
hereby the nature of this invention and in what manner the same is to he
performed, to be particularly described and ascertained in and by the following
statement:
Inside a hollow pneumatic tyre or between the ends of such tyre we place a
short cylindrical pneumatic air bag in such a way that air can be driven through
it by the pressure of the wheel as it rotates. A valve in the inlet tube prevents
the return of the compressed air and an outlet opens into the outside tyre, and
the latter is provided with a safety valve to avoid excess of pressure. The bag
can be filled in the usual way with an inflator at starting, but will draw in air
automatically as it is emptied or partially emptied into the tyre by the
compression of the wheel.

page_text: Inside the bag we place flexible steel rings at suitable intervals to help restore
it to its proper shape when deflated or depressed. These rings are so thin as not
to effect undesirably the resilence of the tyre, and they serve as regulators of
the exhaust action of the compression before mentioned.
We will now describe the invention with reference to the accompanying
drawings in which:
Fig. 1. shews an elevation partly in section of an air tube fitted with one of
these air bags, the outlet tube discharging into the air tube.
Fig. 2. shews a similar view of a modified arrangement in which a bag is
used between the ends of the pneumatic tube.
Referring to Fig. 1. a is the inner or air tube of a pneumatic tyre for the
wheel of a vehicle. b is a collapsible air bag placed within said tube a. The air
bag b is provided at one end with an air inlet tube c for inflation by an air pump
in the usual way, and at the other end with an outlet tube d. Both of these tubes
are furnished with non-return valves c¹, d¹ to prevent the air once drawn in from
returning. The inlet tube c is led through the usual rim and left with an open
end.
e, care light rings of flexible steel or other metal fitting the interior
surface of the air bag . Their object is to distend the air bag after it has been
compressed. Or the inner tube may be dispensed with, the outer cover or tread
being used alone as a single tube.
Referring to Fig. 2, the ends of the air tube which are closed are connected
together by a short tube f which may form an air bag similar to that shewn
in Fig. 1. or a cover outside said air bag. This tube f is provided with an inlet
valve g and discharges into the air tube through an outlet valve gl. Flexible
rings are also employed as before stated. The usual air tube in any case is
provided with a safety valve to avoid excessive pressure.
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. In a pneumatic tyre the method of automatically re-filling or re-charging
such tyres by means of a compressible air bag furnished with flexible rings placed
inside said air bag and connected to said tyre by an outlet tube, and furnished with
non-return valves, as herein described and set forth.
2. In an automatically self inflating pneumatic tyre the arrangement of a
single air bag f, with non-return valves placed outside and between the ends of
said tyre, as herein described and set forth.
Dated this 10th day of November 1897
S. S. BROMHEAD,
Patent Agent,
171 Queen Victoria St. London.