Improvements in or connected with the Inflation of Pneumatio Tyres, Footballs, Air Cushions, Life Belts, Collars, and other Articles adapted for Inflation with Air or Liquid, and Apparatus therefor.
Year: 1896

page_text: Date of Application, 1st Feb., 1896
Complete Specification Left, 2nd Nov., 1896-Accepted, 23rd Jan., 1897
PROVISIONAL SPECIFICATION.
Improvements in or connected with the Inflation of Pneumatio
Tyres, Footballs, Air Cushions, Life Belts, Collars, and other
Articles adapted for Inflation with Air or Liquid, and Apparatus
therefor.
I, EDWARD ARMSTRONG BELLOW, of 26, High Street, Leominster, in the
County of Hereford, Ironmonger, do hereby declare the nature of this inveution
to be as follows:-
This invention relates to the inflation of pneumatic tyres, footballs, water and
air beds or cushions, life belts, life collars, and other articles adapted for inflation
with air or liquid. It is designed mainly with the object of automatically closing
the passage into the article after the current for inflating the article has ceased, so
as to prevent the return of that current.
In carrying my invention into effect, I provide an automatic back pressure valve
at or immediately beyond the point at which the stoppage is required to be effected.
In its simplest form this valve comprises a valve tube or nozzle entering the
cushion, bladder, bed or other structure to contain the fluid under pressure and
provided with an internal tube passed longitudinally through the external one.
One end of this internal tube is hermetically closed and enlarged or formed into
the shape of a ball, so that under certain conditions it will close against the end
of the external tube which is preferably flared or bell-mouthed to form the valve
seat. The other end of the internal tube is lapped over and attached to the end
of the external tube.. In the internal tube just beyond the flared end of the
external tube is a hole through which air can escape from the internul tube into
the external one and so into the article. The means for inflating the article may
consist of an inflating pump or tube or in some cases inflation may be effected by
blowing with the mouth.
In its normal condition with the article inflated and valve closed, the ball or
enlarged end of the internal tube is collapsed and rests against the flared end of
the external tube thus preventing any air escaping. If air however be forced into
the internal tube, the latter expands until the large end is forced away from the
flared end of the external tube, the air pressure being thus enabled to pass through
the hole in the internal tube into the article. The moment however the cessation
of pressure in the internal tube takes place the internal tube will collapse, its
enlarged end collapsing against the flared end of the external tube, thus closing the
exit and preventing air from escaping, the pressure of the fluid in the article
ensuring the enlarged end being held on its seat.
When required to deflate the article a taper pointed nozzle or spindle may be
thrust longitudinally through the internal tube so as to force the enlarged end off
its seating, when the air will immediately rush out and escape. This automatic
valve can be easily applied to any existing bladders or air tubes and obviates the
necessity of stowing away long pieces of tube, and furthermore as there is no
necessity for using string for tying the tube, there is no danger of cutting
the same.
Dated this 31st day of January 1896.

page_text: .
COME LEIE SPECIFICATION.
Improvements in or connected with the Inflation of Pneumatio
Tyres, Footballs, Air Cushions, Life Belts, Collars, and other
Articles adapted for Inflation with Air or Liquid, and Apparatus
therefor.
I, EDWARD ARMSTRONG BELLOW of 26 High Street, Leominster in the
County of Hereford, Ironmonger, 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 the inflation of pneumatic tyres, footballs, water and
air beds or cushions, life belts, life collars, and other articles adapted for inflation
with air or liquid. It is designed mainly with the object of automatically closing
the passage into the article after the current for inflating the article has ceased,
so as to prevent the return of that current.
The invention will be understood from the following description, reference being
had to the accompanying drawing, in which,
Figure 1 is a sectional elevation showing my invention as applied by way of
example to a pneumatic tyre; and
Figure 2, a detail view of the valve on an enlarged scale.
Referring to this drawing, A is the air tube, B the tread of the tyre and C the
rim of the wheel. The automatic back pressure valve comprises a valve tube or
nozzle D entering the air tube of the tyre, one end being cemented thereto at D'
and the other turned over the outside metal tube F and secured. G is an internal
tube passed longitudinally through the external one D. One end of this internal
tube G is hermetically closed and enlarged and fitted with a ball E so that
under certain conditions it will close against the end of the tube D, which is
preferably flared or bell mouthed to form a valve seat. The other end of the
internal tube G is open, and its edge is lapped over the tube D and firmly attached
thereto. In the internal tube G, just outside the flared end of tube D is a hole H
through which air can pass from the tube G into the tube D and so into the air
tube of the tyre. I is a dust cap screwing on to the threads on the tube F,
Ja pin with sorewed nut K to tighten the valve E on its seat when the dust cap
is screwed on. This pin J may be used or not as desired. The means for inflating
the article may consist of an inflation pump or tube, or in the case of some articles
inflation might be effected by blowing with the mouth.
In its normal condition with the article inflated and the valve E closed on its
seat, the ball E or enlarged end of the tube G is collapsed and rests against
the flared end of the tube D, thus preventing any air escaping. If however the
сар
I be screwed off, and air be forced into the internal tube G by a pump, the
tube G expands until the large end E is forced away from the flared end of
the tube D, the air pressure being thus enabled to pass through the hole H in the
interval tube G and into the air tube A. The inoment, however, the cessation of
pressure in the internal tube G takes place, the said tube will collapse, its enlarged
end E collapsing against the flared end of the tube D, thus closing the exit and
preventing air from escaping from the air tube, the pressure of the fluid in the tyre
ensuring the enlarged end E being held on its seat.
When required to deflate the article, a taper pointed nozzle or spindle may be
thrust longitudinally through the internal tube G so as to force the enlarged end E
off its seat, when the air will immediately rush out into the tube G through hole H
into tube D and escape, or if the pin J is provided, all that is necessary is to push
the said pin inwards to force the valve E off its seat.
I have described my invention more especially in connection with the valves

page_text: applied to pneumatic tyres, but it must be understood that it is equally applicable
for the other purposes enumerated. The valve can be easily applied to any
existing bladders or air tubes and obviates the necessity of stowing away loug
pieces of tube such as in the case of footballs, and furthermore as there is no
necessity for using string for tying the tube, there is no danger of cutting the
same. The metal tube with cap I and pin J is applied more especially in
connection with pneumatic cycle tyres, but in the case of footballs and some other
cases they are dispensed with, so that there shall be no rigid projection, but allow
the device to be stowed away inside the outer cover.
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. The improvement in inflation valves for pneumatic tyres and other purposes,
which consists in forming them of a tube, one end of which enters and is secured
to the air tube or other structure containing the fluid under pressure, in combination
with an inner concentric tube of elastic or flexible material passed longitudinally
through the outer tube, said internal tube being closed and enlarged at the inner
end so as normally to rest against the end of the external tube, and the opposite
end lapped over and attached to the outer end of the external tube, said inner tube
being provided with a small hole communicating with the outer tube, whereby if
air be forced into the inner tube, the latter will expand until its enlarged end is
forced off the end of the outer tube, and the air will pass through the hole afore-
said into the article to be inflated, while the moment the cessation of the air supply
through the inner tube takes place, its enlarged end will collapse against the end
of the external tube, thus closing the exit and preventing air from escaping through
the intercommunicating hole, substantially as described.
2. A back pressure inflation valve composed of an outer tube, one end of which
is secured to the air tube of the pneumatic tyre or other article to be inflated, and
forming a valve seat, an inner concentric elastic rubber tube with an enlarged end
forming a valve fitting closely on to the valve seat aforesaid by the tension of the
indiarubber or the pressure of the compressed air, in combination with means
for expanding the inner tube so as to force its enlarged end off the valve scat
and deliver air beyond the valve into the article requiring inflation substantially
as described.
3. The means employed for deflating articles such as footballs, pneumatic tyres,
cushions and the like fitted with the back pressure valves such as described in
Claims 1 and 2, substantially as set forth.
4. The general combined arrangement and construction of parts forming my
improved valve for pneumatic tyres, footballs, air-cushions, lifebelts, collars and
other articles adapted for inflation with air or liquid substantially as set forth.
Dated this 31st day of October 1896.
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Birmingham, and London, Patent Agents.