An Improved Apparatus and Means for Inflating Pneumatic Tyres, and for other like purposes.
Year: 1893

page_text: Date of Application, 16th May, 1893-Accepted, 17th June, 1893
COMPLETE SPECIFICATION.
An Improved Apparatus and Means for Inflating Pneumatic Tyres,
and for other like purposes.
I, GEORGE HARCOURT, of 45 Essex Street, in the County of London, Engraver,
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 an improved apparatus and means for inflating pneumatic
tyres and for other like purposes, which consists of a plug or stopper fixed to the
rim of a wheel and pneumatic tyre of any vehicle with a male screw to receive
the socket of a connector at the end of a valve screwed to a pump or syringe.
I attain this object by the means illustrated in the accompanying drawing, in
which-
Fig. 1 is one half in vertical section and one half in elevation of the connector
and valve screwed to the end of an ordinary air pump. The top part of this fig. is
broken off for convenience;
Fig. 2, is a vertical section of the screwed plug or stopper.
Similar letters refer to similar parts throughout the several views.
I construct as in Fig. 2, a metallic screwed plug 9 with a flange and in the said
screwed plugg I drill a reducing hole in order to form a valve seating s.
If pre-
ferable india rubber packing may be used on the valve seating s. The screwed
plug q is fixed to the rim of a wheel and a pneumatic tyre (indicated by dotted
lines in Fig. 2,) and on which I screw a reducing piece n with a centre pin t having
a passage p and a nut r and washer o'. Above the reducing piece n I provide a
screwed cap or stopper m and india rubber washer o.
The object of this invention is to close the opening at the valve seatings by
screwing the reducing piece n on the screwed plug 9 to prevent the escape of air
from a pneumatic tyre when the cap m is removed in order to fix the pump con-
nector by the socket k. When it is desired to pass air through the plug the
reducing piece m is slightly raised to the position shewn in Fig. 2; or to remove
the connector a similar operation is performed so as to close the valve seating s
before disconnecting the connector and replacing the cap m.
On the end of a pump or syringe a with the usual piston b 1 screw a metallic
collar e with a flange having a hole in the centre, and in this hole I pass a male
screw and a metal disc c with pins d on the underside. To the collar e I screw
a cap i with a male screw j, and inside the cap i attached to the screw ƒ I fix an
india rubber disc g and a piston h.
The object of this invention is to close the valve or opening in the flange of
the collar e to prevent the escape of air from a tyre, by means of the india
rubber disc g, being forced upwards on the back pressure of air acting on the
piston h.
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. In an apparatus for inflating pneumatic tyres and for other like purposes, the
combination of the screwed plug and flange 7 with valve seatings and the reducing
piece n with the centre pint and passage p, substantially as herein described and
according to Fig. 2, of the accompanying drawing.
2. In an apparatus for inflating pneumatic tyres and for other like purposes, the
combination of the reducing piece n and cap or stopper m with washers, nut and

page_text: plug, substantially as herein described and according to Fig. 2, of the accompanying
drawing.
3. In an apparatus attached to a pump for inflating, the combination of the
cap i male screw j and flanged collar e with opening or valve in the centre, and
disc c and pins d screw india rubber disc g and piston h, substantially as herein
described and according to Fig. 1, of the accompanying drawing.
4. In an apparatus attached to a pump for inflating, the combination of the
disc pins d and a screw f passed through a hole with the india rubber disc g and
piston to form a valve, substantially as herein described and according to the
accompanying drawing.
Dated this 16th day of May 1893.
J. P. BAYLY,
18, Fulham Place, W., Agent for the Applicant.