Improvements in or relating to Valves for the Inflation of Pneumatic Tyres and other Articles Requiring Inflation or Distension.
Year: 1896

page_text: 109:1
Complete Specification Left. 21st Nov., 1896-Accepted. 20th Feb., 1897
PROVISIONAL SPECIFICATION.
Improvements in or relating to Valves for the Inflation of
Pneumatic Tyres and other Articles Requiring Inflation or
Distension.
I WARWICK BROOKES of 350 Oxford Road, Manchester, in the County of
Lancaster, Photographer, do hereby declare the nature of this invention to be as
follows:-
This invention relates principally to the inflation of pneumatic tyres.
According to this invention I fix in the inflatible tube of the tyre a short india
rubber or other suitable elastic bush or socket of special form open at both ends
and fastened by a flange and preferably vulcanized to the said tube.
This short bush or socket projects slightly outside of the pneumatic tube in
order to fix it in place in the rim of the wheel to which the tyre is applied and
also projects inside the said tube for say about three eighths of an inch, and is
preferably brought to a feather edge at its inner extremity; the short bush or
socket is also slightly tapered or reduced in internal diameter at its inner
extremity.
Through this bush or socket I push a valve made of a plain tube of vulcanite or
other suitable material upon which is fixed the end of an india rubber or other
suitable elastic tube of flat or ribben shape twisted or coiled into spiral form. The
loose fixed end of this twisted or coiled flat tube projects from the socket inside
the pneumatic tube.
This valve will require no special means for fixing it in the tube as the diameter
of the rigid part thereof will be equal to or slightly larger than the bush or socket
into which it is forced and by which it will be firmly held, especially at the reduced
or tapered end of the said bush or socket.
The outer end of the valve is so constructed that the nozzle of an inflator or
pump can be readily applied thereto, and the inflation of the pneumatic tube will
only tend to hold the valve more firmly in its place owing to the pressure of the
air against the side of the socket or bush; but the valve may be removed by
withdrawing it from the outside of the pneumatic tube.
It will be evident that my invention is also applicable to the inflation or distension
of other articles as well as to pneumatic tyres.
Dated this 21st day of February 1896
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.

page_text: Improvements in or relating to Valves for the Inflation of
Pneumatic Tyres and other Articles Requiring Inflation or
Distension.
1 WARWICK BROOKES, of 350 Oxford Road, Manchester, in the County of
Lancaster, Photographer, 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 principally to the inflation of pneumatic tyres; and the
same will be readily understood on reference to the annexed drawings and the
following description, the drawings illustrating my invention as applied to
the inflatable tube of a pneumatic tyre.
According to this invention I fix in the inflatable tube a of the tyre a short
india rubber or other suitable elastic bush or socket 6 of special form open at
both ends and fastened by a flauge and preferably vulcanized to the said tube.
This short bush or socket & projects slightly outside of the pneumatic tube a in
order to fix it in place in the rim of the wheel to which the tyre is applied, and also
projects inside the said tube for say about three eighths of an inch, as seen on Fig. 1,
and is preferably brought to a feather edge at its inner extremity as shewn; the short
bush or socket is also slightly tapered or reduced in internal diameter at its inner
extremity.
Through this bush or socket I push a valve (see Figs. 2 and 3) made of a plain
tube c of vulcanite (or other suitable material such as stiff india rubber sufficiently
rigid for my purpose) upon which is fixed the end of an india rubber or other
suitable elastic tube d d made entirely or partly of flat or ribbon shape twisted or
coiled into spiral form, such tube forming the subject matter of an application for
Letters Patent No. 3638, made by me on the 18th day of February 1896. The
loose or free end d' of this twisted or coiled flat tube projects from the socket
inside the pneumatic tube (see Fig. 3). An india rubber tube c+ may be provided
to cover part of the rigid nozzle c and the end d of the flexible tube.
This valve will require no special means for fixing it in the tube a as the diameter
of the rigid part e thereof will be equal to or slightly larger than the bush or
socket b into which it is forced and by which it will be firmly held, especially at
the reduced or tapered end of the said bush or socket.
The outer end of the valve is so constructed, say by screwing the outer end of
the part c as shewn, that the nozzle of an inflator or pump can be readily applied
thereto, and the inflation of the pneumatic tube will only tend to hold the valve
more firmly in its place owing to the pressure of the air against the side of the
socket or bush.
In some cases a groove c' (see Fig. 4) may be made around the inner end of the
tube c to hold the part d thereon more firmly, or the inner end of c may be otherwise
made with a bulb or its equivalent. In some cases also the part d' may be protected
by a metal tubular cover c 2, as seen at Fig. 5.
On applying an air-pump or inflator to the projecting end of cair will pass
readily through the slit in the length of the coiled or twisted part d'; but cannot
return as the coiling or twisting of the part d' will tend to keep the slit firmly
closed. To deflate the tube c, all that is required is to withdraw or partly withdraw
the valve from the socket b, or, in the case shown at Fig. 5 to loosen c from c 2.
It will be evident without further illustration that my invention is also applicable
to the inflation or distension of other articles as well as to pneumatic tyres.

page_text: 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 :-
The combination with a back-pressure valve formed with a suitably rigid nozzle
and an elastic flexible tube made partly or entirely in flattened and twisted or
coiled ribbon form, of an elastic socket fixed to the article to which the valve is to
be applied, such socket being of such diameter and so formed as to grip the said
valve and form an air-tight joint therewith, substantially as herein before set forth.
Dated the 20th day of November 1896.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.