Improved Valve for Pneumatic Tyres, Aircushions, and other Inflatable Receptacles.
Year: 1899

page_text: Date of Application, 1st Mar., 1899-Accepted, 6th May, 1899
[Communicated from abroad by the Firm of GEORG MÜLLER & Co., of Gmünd,
in the Kingdom of Wurtemberg, German Empire, Manufacturers.]
Improved Valve for Pneumatic Tyres, Aircushions, and other
Inflatable Receptacles.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 322, High Holborn, in the County of Middlesex, 6, Lord
Street, Liverpool, and 6, Bank Street, Manchester, both in the County of Lan-
caster, and Lower Temple Street, Birmingham, in the County of Warwick, Civil
Engineer, 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:-
The object of the present application is a valve for the pneumatic tyres of
vehicle wheels, air-cushions and the like, the peculiar arrangement of which
renders possible an easy pumping in of the air in to the tyre or the like as well
as a secure and durable closure of the same.
In the accompanying drawings a valve of this kind is illustrated as follows:-
Figure 1, a section of the valve, and
Figures 2-4 separate portions of the same.
Figure 5, cross section on the lines A A shewn in Figure 2.
The complete valve consists of the valve-casing a provided outside with a
screw thread, which is secured in the usual manner to the pneumatic tyre or
the like by means of a nut a¹ and lock nut a² or the like. In this valve-casing
a sheath is inserted which with its annular projection c¹ rendered tight by a
rubber washer or the like d, is firmly fixed by means of the screw cape to the
casing a
The sheath c serves for the reception of the valve f and its perforated interior
also forms a seating for the valve washers fi få fastened to the valve f which
may consist of leather, rubber or the like.
The valve body, together with its valves f1 f is movable in the sheath c and
is guided by means of the projection f3 into one of the air slots of the
sheath c. Its rise is limited by the perforated plug screwed on the sheath,
and this prevents it falling out of the sheath c.
The valve body engages with its screw threaded pin h through the perforation
of the sheath into its upper also sheath-like projection 3 where it engages
with the female screw threaded projection 71 of the superposed cap 7. This cap
serves to firmly press the valves fl f2 on their seating.
In order to secure the sheath against turning in the casing a and thus
spoiling its washers, it has a flat part or a groove engaging with projection a³
of the casing a.
Figure 1 shews the position of the parts before and after the pumping-in of
air to the tyres or the like. If air is to be pumped in, the cap is unscrewed
and an air-pump screwed on the mouth piece of the sheath c. At each stroke

page_text: of the piston the valve body f with its two valves flf is lifted from its position,
at each return stroke of the piston, on the other hand, it will firmly press against
its seating, in consequence of the internal pressure.
When sufficient air is pumped in, the valves fif are firmly held in position
by means of the cap 7.
Having now particularly described and, ascertained the nature of my said
invention and in what manner the same is to be performed, as communicated
to me by my foreign correspondent, I declare that what I claim is:-
The improved valve for pneumatic tyres, air cushions and the like, constructed
and operating substantially as described with reference to the accompanying
drawings.
W. P. THOMPSON, & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicant.