Improvements in Inflation Valves for Pneumatic Tyres,
Year: 1893

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Date of Application, 9th May, 1893
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Complete Specification. Luft 8th Feb. 1894-Accepted. 10th Mar.. 1894'
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PROVISIONAL SPECIFICATION.
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Improvements in Inflation Valves for Pneumatic Tyres,
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I, HUBERT PRICE, of 36, George Road, Edgbaston, in the County of Warwick,
India Rubber Manufacturer, do hereby declare the nature of this invention to be
as follows:-
My invention relates to inflation valves for pneumatic tyres.
According to my invention the valve is provided with a tubular shank in the.
lower end of which the valve proper is seated, and which lower end is formed with.
a flange, a bar secured to the flange and extending across the valve serving to
prevent the said valve from becoming displaced. Upon the tubular shank slides a
flanged collar between which and the flange upon the shank the india rubber of the
air bag or chamber of the tyre is clamped, the said flanged collar being pressed
towards the fixed flange by means of a nut upon the shank which is externally
screw-threaded for a portion of its length..
7.
-The head of the valve has fixed to it a covering of india rubber or other suitable
substance to make an airtight joint and the valve stem extends right through; the.
tubular shank and projects slightly beyond the end of the same, such projecting
end being screw threaded and adapted to have a nut screwed upon it to draw the
valve firmly against.its. seat. This nut is provided with flanges which surround
the upper end of the shank and prevent the entrance of dust into the same.
When the tyre is to be inflated this cap or nut is removed and another cap which
is screwed onto the shank and attached to the pump is substituted. This second:
cap is provided with a cross bar or projection which as it is screwed onto the shank
acts against the stem of the valve and moves the latter away from its seat.
To deflate the tyre it is only necessary to press the projecting part of the stem.
1009
G. F. REDFERN & Co.,
South Street. Finsbury. London, Agents for the Applicant.
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COMPLETE SPECIFICATION.
Improvements in Inflation Valves for Pneumatic Tyres.
I, HUBERT PRICE, of 36, George Road, Edgbaston, in the County of Warwick,
India-rubber Manufacturer, 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 :-
My invention relates to inflation valves for pneumatic tyres...
According to my invention the valve is provided with a tubular shank at one
end of which the valve proper is seated, and which end is formed with a flange, an
elastic band secured to the flange and extending across the valve serving to prevent
the said valve from becoming displaced. Upon the tubular shank slides a plate
between which and the flange upon the shank the india-rubber of the air-bag or
chamber of the tyre is clamped, the said plate being pressed towards the fixed
flange by means of a nut upon the shank which is externally screw-threaded for a
portion of its length.
The head of the valve has fixed to it a covering of india-rubber or other suitable
substance (which may have a small ring or bead moulded thereon) to make an air

page_text: tight joint and the valve stem extends right through the tubular shank and projects
slightly beyond the end of the same, such projecting end being screw-threaded and
adapted to have a nut screwed upon it to draw the valve firmly against its seat.
This nut is provided with a cap or rim which surrounds the end of the thank nud
prevents the entrance of dust into the same.
When the tyre is to be inflated this cap or nut is removed and another.cap which
is screwed onto the shank, and attached to the pump is substituted. This second
cap is provided with a cross-bar or projection which as it is screwed onto the shank
acts against the stem of the valve and moves the latter away from its seat.
To enable my invention. to be fully understood I will describe the same by
réference to the accompanying drawing, in which :-
Figure 1 is a side elevation of my improved valve; and,
Figure 2 is a plan of the same:
Figure 3 is a sectional view representing my improved valve in conjunction with
atyre and rim, the nut for drawing the valve proper firmly against its seat being
clearly shewn:
Figure 4 is a view similar to Figure 3 but representing the valve open and the
cap through which the tyre is to be inflated in position.
Figures 5 and 6 are views of a detail hereinafter described.
a is the tubular shank, and 6 is the valve proper, the said valve being adapted to
seat itself upon the flange c formed in one piece with the shank a and being
provided with the stem d which passes through the tubular shank.
e is a supplementary flange screwed onto the shank a (which is screw-threaded)
and having projections f,f to which an india-rubber band g is connected, as shewn
most clearly in Figures 1 and 2, the said band-by pressing upon the valve b.serving
to normally retain the same upon its seat.
is the plate between which and the collare the air-chamber or bag (which is.
indicated by the letter i in Figure 3) is clamped by means of a nut screwed onto
the tubular shank. k is a nut also srewed onto the said shank and serving after
the valve is applied to the wheel-rim (which is indicated in Figures 3 and 4 by the
letter) to firmly fix the said valve.
m is the cap or nut which serves to draw the valve firmly against its seat, the
said cap being provided with a screw-threaded hole and adapted to engage with a
screw-thread
upon
the end of the stem d of the valve, as shewn in Figures 1 and 3.
n is the cap which serves to hold the valve open during the inflation, the said cap
being shewn. in section in. Figure 4 and in elevation and plan respectively-in-
Figures 5 and 6; the said cap is provided with a cross-bar o which, when the cap
is screwed onto the shank, presses upon the valve-stem, and with a nozzle-p to
which the tube of the inflating pump can be connected.
It will be obvious that when the inflation of a tyre is completed the unscrewing
of the cap n will allow the valve 6 to close against its seat under the action of the
air-pressure and of the elastic band g and that when the said cap n is removed and
the cap m is substituted therefor the said valve will be drawn against ita seat
so as to obviate any liability of leakage..
To deflate a tyre it is only necessary to press the part of the stem d projecting
through the tubular shank a.
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Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what, I
claim is :-
1. In an inflation valve for pneumatic tyres, the combination of a tubular shank
having a valve-seat, a valve the stem of which passes through the said shank, and a
cap adapted to be screwed onto the screw-threaded end of the said stem to hold the
valve firmly against the seat, substantially as described.
2. The combination with an inflation valve of the kind hereinbefore described
of a cap such as m for opening the valve and for the attachment of the air-pump,
substantially as described.

page_text: 3. The manufacture and use of an inflation valve for pneumatic tyres, substantially
as hereinbefore described and illustrated in the accompanying drawing.
Dated this 8th day of February 1894.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.