Improvements in connection with Valves for Pneumatic Tyres and similar purposes.
Year: 1895

page_text: Date of Application, 19th Aug., 1895
Complete Specification Left, 19th May, 1896-Accepted, 11th July, 1896
PROVISIONAL SPECIFICATION.
Improvements in connection with Valves for Pneumatic Tyres and
similar purposes.
We, WILLIAM BOWN, 308 Summer Lane, Birmingham in the County of
Warwick, General Manufacturer, and GEORGE CAPEWELL, 114 Upper Thomas
Street, Aston juxta Birmingham aforesaid, Machinist, do hereby declare the
nature of this invention to be as follows:-
This invention has reference to valves for pneumatic tyres and similar purposes
and our improvements consist-Firstly-in forming the non-return portion of the
valve with a Tor similar shaped air passage provided with a vulcanite plug or
equivalent to form a check, or we may employ a punctured rubber washer or
equivalent placed or secured inside the valve to form the check; we also when
desired cover the face of the seating of the air plug of the said valve with vulcanite
or equivalent. Secondly-in means for preventing the screwed connections or
other parts of such valve from revolving by the use of a serrated washer or
equivalent in combination with a cap or cover provided with a D shaped hole-
and Thirdly in forming that portion of the valve which is inserted into the tyre
and passes through the rim of the wheel detachable from the other portion of the
said valve so as to enable the portion which enters the tyre and rim to be made as
small in diameter as possible.
Dated this 16th day of August 1895.
WILLIAM BOWN.
GEORGE CAPEWELL.
Improvements in connection with Valves for Pneumatic Tyres and
similar purposes.
+
We WILLIAM BOWN 308 Summer Lane Birmingham in the County of
Warwick, Manufacturer and GEORGE CAPEWELL, 114 Upper Thomas Street,
Aston juxta Birmingham aforesaid, Machinist 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 has reference to valves for pneumatic tyres and similar purposes
and our improvements consist Firstly in forming the non-return portion of the valve
with a Tor similar shaped air passage provided with a vulcanite plug or equivalent
to form a check, or we may employ a punctured rubber washer or equivalent -
placed or secured inside the valve to form the check; we also when desired cover
the face of the seating of the air plug and valve with vulcanite or equivalent.
Secondly in means for preventing the screwed connections or other parts of such
valve from revolving by the use of a serrated washer or equivalent in combination
with a cap or cover with a D shaped hole; and Thirdly in forming that portion of
the valve which is inserted into the tyre and passes through the rim of the wheel

page_text: detachable from the other portion,so as to enable the portion which enters the tyre
and rim to be made as small in diameter as possible.
In order that our invention may be more clearly understood we have illustrated
same on the accompanying drawings.
Fig. 1 is a sectional elevation of a valve constructed according to our
improvements.
A is the stem of the valve which is secured in the air chamber of a pneumatic
tyre. The top of the said stem forms a seating for the body B which is held in
position by the hollow screw the stem being screwed for that purpose. Resting
on a shoulder in the interior of the body B is a perforated washer 6 which forms
the check portion of the valve, the said washer being held in position by the
part provided with an air passage, the neck of which screwed to receive
the pump connection when filling the tyre with air. The cap which rests on the
shoulder of the part 68 and screws onto the body B presses the said part b
firmly onto the perforated washer thereby forming a perfectly air tight joint.
When pumping air through the valve it passes down the air passage in the part
causing the perforated washer to expand thereby opening the perforations and
passes down the hollow screw thence through the stem into the tyre, but imme-
diately the inward pressure of air ceases the perforated washer assumes its normal
position thus effectually preventing any air from escaping.
Fig. 2 shews another method of forming a check valve with the stem A
detachable from the valve proper. In this case the stem A has one end of the
hollow plug a provided with an air tight joint a inserted in the top and held in
position by means of the screwed cap a³ or equivalent. The body B is connected
in any suitable manner to the other end of the said plug a'. Placed in the interior
of the body and resting on a suitable shoulder is the rubber check portion d with
a Tor similar shaped air passage in which a vulcanite or other plug is fitted
and held in position by the hollow part d² the neck of which is screwed to receive
the pump connection. When air is pumped through the part into the check
portion dit forces open the part in which the plug d' is fixed and passes down the
hollow plug a' through the stem into the tyre, but immediately the inward pressure
of air ceases the T shaped air passage assumes its normal position, the plug d¹
effectually preventing any air from escaping.
Fig. 3 illustrates our improved method for preventing the internal parts of a
valve from revolving when connecting or disconnecting the inflater. The under
edge of the cup E which screws onto the stem of the valve is serrated and the hole
in the top through which projects the part e' for screwing the pump connection on
to is formed D shaped. Also screwed onto the stem of the valve is a washer e or
equivalent with one or more projections e³ formed on the upper edge and when it is
screwed close up to the cap E the said projection takes into one of the serrations
thus firmly and securely locking the said cap E whereby the internal parts are
prevented from revolving. It will be obvious the serrations may be made on the
washer and the projection on the cap.
Fig. 4 shews the application of the check portion with a T or similar shaped air
passage applied to the casing of an ordinary valve the action of which is the same
as hereinbefore described and shewn at Fig. 2.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
:-
Firstly. The improvements in connection with valves for pneumatic tyres and
similar purposes consisting essentially of a detachable body such as, B in com-
bination with a stem such as A substantially as herein described and shewo in
Figs. 1 and 2.
Secondly. Forming the check portion of a valve in the manner substantially as
herein described and shewn in Fig. 1.
Thirdly. In a valve for pneumatic tyres and similar purposes forming the

page_text: check portion with a T or similar air passage in combination with a vulcanite
plug or its equivalent substantially as herein described and shewn in Figs. 2
and 4.
Fourthly. In a valve for pneumatic tyres and similar purposes a cap such as E
in combination with a washer such as for the purpose substantially as herein
shewn and described.
D
101 1
1060
WILLIAM BOWN.
GEORGE CAPEWELL.