Improvements in Valves for Pneumatic Tyres and other Articles Adapted to be Inflated with Air under Pressure.
Year: 1896

page_text: Date of Application, 23rd June, 1895
Complete Specification Left, 23rd Mar., 1897-Accepted, 22nd May, 1897
PROVISIONAL SPECIFICATION.
Improvements in Valves for Pneumatic Tyres and other Articles
Adapted to be Inflated with Air under Pressure.
I, JOHN TOWNSEND TRENCH of Kenmare, in the County of Kerry, Ireland,
Land Agent, do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved valve for pneumatic tyres and other
articles adapted to be inflated with air under pressure, and it has for its object
the construction of a valve which is adapted to be located inside the tyre which
can be fixed to the tyre before it is mounted on the wheel rim.
My improved valve consists essentially of a cap threaded internally and adapted
to receive the threaded stem of the valve. The top of the cap is pierced with one
or more small holes and it has fixed over it in any convenient manner a rubber
cap adapted to form a flat valve which is pierced with one or more holes, or
slits which do not coincide with the hole or holes in the top of the metallic cap.
Independent of this rubber cap or of one piece as is found most convenient is
a rubber collar the flange of which is cemented or otherwise fixed to the interior
of the tyre. The stem of the valve-by this construction-which may be of a
very small diameter passes through a hole in the base of the tyre and screws
into the threaded cap, the staid stem being locked to the cover by means of a
flanged plate or by any other suitable device so as to prevent the said stem
from unscrewing when attaching or removing the inflating pump. This device
also prevents the tyre from creeping on the wheel rim.
The outer part of the stem of the valve is threaded to adapt it to receive the
nozzle of the inflating pump and also a cap to close its outer end.
This valve is especially adapted for tyres of the tubeless type as it is essential
in such tyres that the valve occupies but a small portion of the entire width of
the tyre in contact with the wheel rim.
Dated this 23rd day of June 1896.
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.
Improvements in Valves for Pneumatic Tyres and other Articles
Adapted to be Inflated with Air under Pressure.
I, JOHN TOWNSEND TRENCH of Kenmare, in the County of Kerry, Ireland,
Land Agent, 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 relates to an improved valve for pneumatic tyres suitable also for
other articles adapted to be inflated with air under pressure, and it has for its
object the construction of a valve which is adapted to be located inside the tyre
and can be fixed thereto before it is mounted on the wheel rim.
In the accompanying drawing which illustrates this invention:-
Figure 1 is a view in sectional elevation, and

page_text: Figure 2 is a view in plan.
Figures 3 and 4 are similar views of a modification.
с
Throughout the views similar parts are marked with like letters of reference.
My improved valve consists essentially of a cap A threaded internally and
adapted to be screwed on to a hollow stem B. The cap A is of rectangular shape
and it preferably has small side flanges a, a. The top end of the stem B is
reduced in size and is adapted to pass through the cap A as shown. Over the
cap A is fixed a strip of rubber C adapted to form a flat valve. When this strip
lies flat against the cap A as shown by Figures 3 and 4 it is pierced with one or
more holes or slits c located so that they do not coincide with the top of the hollow
stem B. I prefer however to let the upper end 6 of the hollow stem B stand proud
of the cap A as shown by Figure 1 so that the strip C makes a seal direct with the
top of the said stem in which case it is not necessary to provide holes or slits in
the said strip. Independent of the strip C (as shown in Figure 1) or in one piece
with it (as shown in Figure 3), whichever is found most convenient, is a flanged
rubber collar D adapted to be fixed to the neck al of the cap A and to be
cemented or otherwise fixed to the interior of the tyre X so as to form an air-tight
joint therewith.
To mount the valve, the stem B which-by this construction-may be of a very
small diameter, is passed through a hole in the base of the tyre X and the threaded
cap A is then fixed to it, a small internal washer a³ being used to insure an
air-tight joint between the cap and the stem.
On to the hollow stem B is formed or fixed a plate E adapted to be fixed to the
base of the tyre so as to prevent the stein B from unscrewing out of the cap A
when attaching or removing the inflating pump.
The outer part of the stem B is threaded to adapt it to receive the nozzle of the
inflating pump and is closed by a cap F in the usual manner.
The valve is especially adapted for tyres of the tubeless type as it is generally
essential in such tyres that the valve shall occupy but a small portion of the entire
width of the tyre in contact with the wheel rim.
Deflation is effected. by lifting the strip C off its seating by means of a stem or
pointer introduced through the hollow stem B. -
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.) The improved valve for pneumatic tyres and other articles adapted to be
inflated with air under pressure, substantially as herein before described.
(2.) A valve for pneumatic tyres and other articles adapted to be inflated with
air under pressure, consisting essentially of a cap such as A, of a strip of rubber or
other suitable material such as C mounted on the said cap, and of a hollow stem
such as B on which the cap A is mounted and adapted to pass through the tyre
and the wheel rim, as set forth.
(3.) In a valve for pneumatic tyres and other articles adapted to be inflated with
air under pressure, the combination of a cap such as A, of a stem such as B the
upper eud 6 of which is adapted to receive the cap A, and to stand proud of the
face thereof, of a strip of rubber such as C stretched over the cap A and adapted
to seal the end 6 of the stem B, of a flanged rubber collar such as D adapted to
form an air-tight joint between the cap A and the tyre, and of a plate such as E
carried by the stem B and adapted to be attached to the base of the tyre, all
combined arranged and adaptel to operate as and for the purpose set forth.
Dated this 28. d
11005
of March LOST.
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.