Improvements in Valves, chiefly designed for Pneumatic Tires.
Year: 1894

page_text: Date of Application, 29th Oct.. 1894-Accepted, 1st Dec., 1894
COMPLETE SPECIFICATION.
Improvements in Valves, chiefly designed for Pneumatic Tires.
I, GEORGE HENRY TANSLEY, of Number 49 Jefferson Street, in the City of
Hartford, County of Hartford, and State of Connecticut, United States of
America, Machinist, 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 my invention is to provide a simple and effective form of valve
which shall be particularly adapted for use on pneumatic tires in inflating and also
for readily deflating the tire.
To this end my invention consists in the details of the several parts making up
the valve and in the combination of such parts as more particularly hereinafter
described and pointed out in the claims.
Referring to the accompanying drawings:
Figure 1 is a detail view in cross section through the rim of a wheel fitted with
a pneumatic tire, showing the improved valve connected to the tire on the rim and
illustrating the method of inflating by use of a pump.
Figure 2 is a detail view in central section through the valve showing the parts
closed.
Figure 3 is a detail view in central section through a modified form of the valve.
Figure 4 is a detail end view showing ports through the valve stem.
Figure 5 is a detail view in section showing the several parts of the valve
separated and including a supplemental cover.
Figure 6 is a sectional view of the valve parts assemblet.
In the accompanying drawings the letter « denotes a pneumatic tire or like
article requiring a valve to retain the air or other fluid under pressure, the tire
being the article to which my invention is more particularly adapted and such tire
being fitted on a rim of a wheel. The valve tube a' projects through a hole in
the rim and to it is secured a valve c.
The valve body is made in sections and includes a body part c adapted to fit
within the valve tube and having exterior corrugations into which the substance of
the tube is forced by a binding wire wrapped about the outside of the tube or
projections which serve the same purpose. This inner body part c is secured to
an outer body part or cap f by interengaging screw threaded parts.
A valve socket d is formed in the body part in the form shown in Fig. 2 and
in the body part for cap in the form shown in Figures 3, 5 and 6 of the drawings.
Within the valve body and on one of the body parts is formed a valve seat e
curved upward toward the valve socket and having non central ports e¹ through
the diaphragm, the upper part of which forms the seat.
In the form shown in Fig. 2, which has the valve socket in the body part c¹, the
side walls of the socket are screw threaded and adapted to receive the threaded
stem of the cap or body part f. This cap has a perforation 9 preferably central
and within the socket and between the end of the stem and the valve seat there is
located the valve of elastic material, preferably of india rubber.
This valve in each instauce is disk shaped and of a diameter slightly less than
the interior diameter of the socket, the edges of the valve overlying the ports
which open through the diaphragm. The stem f is of sufficient length to press the
valve upon the seat so as to securely close the ports. These ports should be closed
by the elastic material of the valve in order to prevent any possible leakage of air
between the interengaging portions of the valve body and the stem

page_text: l
In order to receive the tapered end of a nipple i secured to the flexible tube k of
an air pump and to form a close fitting and firm connection between the pump
and the valve for the purpose of inflating the tire a tapered hole g is provided in
the outer body part, as shown in Figs. 2, 3 and 5 of the drawings. The device is
also provided in the form shown in those figures with a projecting stem threaded
on the outside so as to receive a threaded sleeve as an air pump connection, the
same thread serving to support a cover to close the valve body afterwards.
In Fig. 6 the cap or body section f has an interior thread into which a screw
threaded plug fits to form a cover.
An important feature of improvement is in the curved seat on the diaphragm ;
the non-central location of the holes through the curved seat form another feature
of improvement, while the location of the elastic valve within a socket having
shoulders which prevent the accidental removal of the valve forms another feature.
The operation of the device is as follows:
The valve h being in place in the socket, the valve sections are unscrewed to an
extent sufficient to allow the valve to lift from the seat and the air pump connection
made, by inserting the nipple i as shown in Fig. 1 or by a threaded connection as
shown in Fig. 3. By means of a pump air is forced into the socket and passes
around the edges of the valve h through the ports el into the tire, the outward
pressure carrying the valve against the inner end of the opening 9 except when
the pressure from the pump exceeds the pressure within the tire so that the valve
prevents the outward flow or leakage of air during the operation of pumping. As
soon as the tire is inflated to the desired degree of hardness the two sections are at
once screwed together until the valve h is forced down onto its seat and compressed
between such seat and the surface of the valve socket in the opposing body section.
The air pump is then disconnected, a cover screwed onto the outer end of the valve
body and the parts in condition for use.
When it is desired to deflate a tire the cap is unscrewed a short distance, the
valve lifting outward with the outer section and free of the seat the curved shape
of which aids this lifting of the valve. By means of a wire or like implement
inserted through the opening g the valve his pushed away from the wall of the
Bocket so as to allow the air to escape through the opening 9. The curved shape
of the valve seat is important, as stated, in providing for the lifting of the valve
from the seat in the operation of inflating the tire.
In one form of the device the socket is formed within the body part c¹ of the
valve and in the other form, as shown in Figs. 3, 5 and 6, the socket is formed in
the outer body part, the diaphragm in such case being formed at the outer end of
the inner body part and in position to thrust against the loose rubber valve located
in the socket in the cap section.
The socket is larger in diameter than the opening leading to it in order to
provide against the accidental removal of the elastic valve which is loosely held in
Buch socket. The valve is thrust into place in the socket but is loose therein so as
to lift readily from the seat when the valve sections are partly unscrewed, either
for inflating or deflating the tire, and it cannot drop out of place even when the two
valve sections are completely separated. It can be readily renewed when required.
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 a valve in combination with a tubular valve body having a diaphragin with
ports therethrough, the rounded valve seat on the diaphragm, a valve socket
having threaded walls, a body part or cap having a perforated and threaded stem
fitting the thread on the walls of the valve socket, and an elastic valve located
within the socket and loosely held between the valve seat and opposing body part,
all substantially as described.
2. In combination with a pneumatic tire, a valve secured to the valve tube and
including a tubular valve body with a diaphragm having ports therethrough, the

page_text: outer surface of the diaphragm being rounded to form a valve seat, a valve socket
having threaded walls, a body part having a threaded stem projecting within the
socket, a central perforation through the cap and stem, and a disk shaped valve_of
india rubber less in diameter than the valve socket and with the edges of the valve
overlying and extending beyond the ports through the diaphragm, all substantially
as described.
3. In combination with a pneumatic tire, a tubular valve body secured thereto, a
diaphragm within the valve body having ports therethrough, a disk shaped valve
of elastic material less in diameter than the valve socket and overlying the ports
through the diaphragm, a tubular stem secured to the valve body and having an
opening therethrough flaring near the outer end, and a tapered nipple adapted to
fit the opening in the stem and forming the nozzle of an air pump, all substantially
as described.
4. In combination with a pneumatic tire, a valve secured thereto and consisting of a
tubular valve body having a valve seat with ports therethrough, a screw cap secured
to the valve body with an opening through the stem and cap, a loose india rubber
valve less in diameter than the valve socket and overlying the ports through the
diaphragm, and a nipple adapted to fit the opening through the stem and forming
the nozzle of an air pump, all substantially as described.
5. In combination with a pneumatic tire, a tubular valve body secured thereto, a
diaphragm in the valve body having non-central ports therethrough, a perforated
body part removably secured to the valve body, and a disk shaped elastic valve
less in diameter than the shouldered socket and loosely held within the socket in
the valve body, all substantially as described.
Dated this Twenty-ninth day of October A.D. 1894.