An Improved Valve for Pneumatic Tyres and other purposes.
Year: 1894

page_text: Date of Application, 20th Feb., 1894
Complete Specification Left, 31st Oct., 1894-Accepted, 8th Dec., 1894
PROVISIONAL SPECIFICATION.
An Improved Valve for Pneumatic Tyres and other purposes.
WILLIAM GILL HALL Manufacturer 15 Avenue Road Lower Clapton
London N.E. do hereby declare the nature of this invention to be as follows:-
I construct the valve with ordinary outer barrel piece and removable screw plug
arrange
carrying at its end a small piece of rubber leather or other material. I
the end of said plug which is forced against the air cavity leading through the said
barrel piece into the air chamber upon a swivel. That is to say, I fix the rubber
or other material to be forced against the said cavity within a suitable cup in a
separate piece of metal at the end of the plug aforesaid and this separate piece of
metal is held on a swivel to the main body of the said plug. The rubber or other
material together with the said cup containing same may thus be forced against the
said air cavity-which I surround with a suitable ridge seating-by screwing down
the plug in the usual manner without revolving the cup containing the rubber or
other material thus preventing the latter being damaged in sealing up the air
cavity.
كيم
C T 1
1004
W. GILL HALL.
COMPLETE SPECIFICATION.
An Improved Valve for Pneumatic Tyres and other purposes.
WILLIAM GILL HALL, 15 Avenue Road, Lower Clapton, London, N.E.
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 :-
I construct the valve in the following manner. Into the main body of an
ordinary valve X as shewn in Fig. 1. in the drawing, I insert the plug W which
carries external threads fitting into an internal thread or screw as shewn. The said
plug W has an ordinary orifice D carried below the thread in W to enable the air
to pass beyond that point. Over the said orifice D may be passed a belt of any
suitable material arranged in a groove so as to prevent an undue amount of air
returning into the pump during the process of inflation, but at the same time allowing
the air to be forced through the said orifice with an ordinary pump. I also arrange
at the lower end of the said plug W a suitable cavity in which I insert the stem of
the cup A which I so arrange that it may revolve easily therein. This stem is kept
in position by means of compressing slightly the walls of the cavity aforesaid into a
suitable groove or thinner part of the said stem. Into the opposite end of the
cup A I insert a small plug of rubber or other material B which in screwing down
the plug W is forced against the base C thus shutting off any return of air through
the valve.
On the said rubber B being forced as above mentioned against the base C it is
thus forced in a direct line without turning round as has hitherto been the practice.
This is effected by means of the stem A having a swivel motion within the said
cavity at the base of the plug W.
Under another modification the said rubber may be placed round a suitable
crevice in the main body X and the said A being in this case forced against
the rubber as shewn in Fig. 2 in which case represents the cup and B the rubber.
CUR

page_text: In either case the swivel A acts as before mentioned and prevents any revolving
motion to the rubber which would cause its early destruction.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner it is to be performed I declare that what I claim is :-
In valves for pneumatic tyres and other purposes the prevention, by means of the
swivel A, of the plug of rubber or other material used being revolved on forcing
the same against the air cavity as shewn in Fig. 1, or on forcing cup C against the
rubber B as shewn in Fig. 2, substantially as set forth.
Dated this 30th of October 1894.
W. GILL HALL.