Improvements in Valves chiefly designed for use with Pneumatic Tires, Syphon Bottles, and the like.
Year: 1892

page_text: Date of Application, 30th Aug., 1892-Accepted, 15th Oct., 1892
COMPLETE SPECIFICATION.
Improvements in Valves chiefly designed for use with Pneumatic
Tires, Syphon Bottles, and the like.
JOHN FISH IVES, residing at 15 Park Row, City, County and State of New
York, United States of America, Mechanical Engineer, and FRANK BLISS
COLMAN, residing at 15 Park Row, City, County and State of New York,
United States of America, Mechanical 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 :-
Our invention relates to an improved valve, particularly adaptable to pneumatic
bicycle tires, syphon bottles and the like, and consists in the novel construction
hereinafter fully shown and described.
The object of our invention is to provide a simple and effective valve that will
permit the introduction of air or liquid into a suitable receptacle through the valve
and automatically operate to prevent the escape of the same from the receptacle
until desired.
Our invention is illustrated by the accompanying drawing in which:
Figure 1 is a longitudinal cross-section of the valve as applied to a pneumatic
bicycle tire, showing the same in operation.
Figure 2 is a similar view showing the valve mechanism in position to permit the
escape of the air, or liquid.
and
Figure 3 is a perspective view of one of the details, slightly modified.
Figure 4 is a longitudinal cross-section of a modification of the valve.
Figure 5 is a longitudinal cross-section of the valve as applied to a syphon bottle,
Figure 6 is a plan view of Figure 2 with the capping-piece removed.
This valve is adaptable to pneumatic tires, syphon bottles and the like, and we
have first illustrated and will first describe it as used in connection with a
pneumatic tire.
B is an extension at
A is a valve stem proper, preferably cylindrical in form.
the lower end to furnish a means of fastening the valve stem to the tire C. The
interior of the stem has a substantially cylindrical chamber D extending through
the said stem A, the lower part of which chamber may or may not be contracted as
shown in the drawing to form a small air inlet into the tire. This chamber may be
screw threaded on its inside for a suitable distance as indicated in Figures 1 and 2.
The lower part of this chamber D is preferably left smooth for the reason
hereinafter stated. E is a shank having longitudinal holes or recesses F F in
its sides, said shank being adapted to be secured to the walls of the chamber D
by screw or other connection. At one end of this shank is formed by preference
à collar or other projection having an outwardly extending shoulder G. Through
a central longitudinal perforation in this shank runs by preference a plunger H,
preferably headed at its lower end. A cap I of rubber or other similar clastic
substance is by preference fitted over the shoulder G and is thereby securely held
to the shank. The shank E is screwed into the partially threaded chamber D,
until the cap I is preferably entirely within the smooth parts of the cylindrical
chamber as shown in Figure 1. A lip J (Figure 3) may be formed on the cap I to
bear smugly against the walls of the chamber D. It will now be seen that air may
be forced
past the cap I into the tire through the valve stem A from the outside,
but as soon as there is any return pressure the rubber cap I will be forced against
the shank E and thereby compressed or longitudinally flattened, and its sides
will therefore be forced against the wall of the chamber D securely choking the
'It will also
passage and preventing the return or outward passage of the air.
Ꭻ

page_text: be seen that as the pressure below the cap I or within the tire increases, the rubber
cap is correspondingly more compressed and the joint between the rubber cap and
the chamber D is rendered more effective. To permit the deflation of the tire the
plunger H which may be carried in a longitudinal perforation in the shank the head
of which bears against the inner side of the rubber cap, is depressed as indicated in
Figure 2, thereby elongating the cap I and decreasing the diameter of said cap to
an extent that will permit the air contained within the tire C to pass by and out.
Preferably fitted to the upper part of the valve stem A is a screw threaded cap K
having at its upper end and formed integral therewith a projection or pin M of
substantially the same diameter as the diameter of the plunger H. This cap K has
preferably an overhanging shoulder N which retains a suitable washer O, of lead,
leather, or other suitable substance, (see Figure 1). The object of this washer
being to make a more perfect joint between the cap and the valve stem A, when the
cap K is tightly screwed down, thereby increasing the efficiency of the valve.
This is not necessary, however, for experiment has demonstrated that the rubber
cap I as described makes as near as possible an air-tight joint. We preferably form
a groove or recess P in the upper end of the shank E to admit a small screw-driver
whereby the shank E may be inscrewed and removed from the stem. Figure 3
illustrates a modification of the shank E and cap I in which a washer L, of felt,
sponge or other absorbing material, is inserted between the shank E and the cap
for the following reason. Oil is sometimes used in the air-pump used to inflate the
tire and frequently is pumped into the valve along with the air, and as oil has an
injurious effect on rubber, we therefore insert this washer L to absorb such oil as
may be present. These washers and the caps may be renewed by simply removing
the cap and substituting a new washer and slipping a new cap over the shoulder G
of the shank E. The advantages of the cap K with the projection M are two-fold.
When in the position shown in Figure 1 it increases the efficiency of the valve,
and when removed and in the position shown in Figure 2 the projection M may be
used to operate the plunger H thereby permitting the deflation of the tire. The
presence at all times of this projection M being of great advantage. The modifi-
cation shown in Figure 4 illustrates our invention minus the plunger H. It is
obvious that the pin-projection M' may be sufficiently long to be inserted through
the longitudinal perforation in the shank and the rubber cap thereby elongated,
when it is necessary to deflate the tire.
I
In Figure 5 we have illustrated the application of this valve to bottles known as
syphon bottles, in which the liquid is kept under a pressure and discharged thereby.
In our improved bottle the shank E', and rubber cap 11 may be located in any
portion of the discharge pipe and in such a manner as to permit of operation from
the outside. We have shown in Figure 5 one means of operating the valve in
which a suitable push-piece or button R, sliding through a suitable packing S in
the cap of the bottle, operates upon a suitable plunger H' to elongate the clastic
cap I
This cap fits into the discharge pipe V of the bottle, in such a
manner as to normally close the same, to prevent the discharge of the contents
of the bottle. By pressing upon the button R, the plunger H' is depressed, and
the elastic cap I is elongated, allowing the escape of the liquid into the outlet or
syphon W.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
First. A valve consisting of an inflexible or metallic shank, carrying a flexible
cap
in combination with a hollow valve stem, said flexible cap normally closing said
valve stem and being adapted to be distended to open said valve stem, substan-
tially as described.
Second. In a valve, the combination of the hollow stem A, with the flexible
cap I, contained therein and the plunger H, substantially as described.
Third. In an automatic valve the combination of the valve stem A, with the

page_text: shank E, carrying the plunger H, and with a flexible cap I adapted to be elongated
by the plunger H, to open said valve, substantially as described.
Fourth. In an automatic valve the combination of the valve stem A, the shank E,
having longitudinal grooves F F and carrying the flexible cap Í adapted to
normally close the valve, and with the plunger H carried by the shank E adapted
to overcome the normal tendency of the flexible cap I, substantially as described.
Fifth. In an automatic valve the combination of the valve stem A, the grooved
or perforated shank E with the plunger H, the flexible cap I, and the washer L, of
absorptive material, all arranged substantially as described.
Sixth. In an automatic valve, the hollow stem partially screw-threaded inter-
nally, the therein contained valve mechanism as described with the cap K, adapted
to fit to the upper end of the valve stem, and having the projection M of
substantially the same diameter as the plunger H, substantially as, and for the
purpose described.
Seventh. In an automatic valve, the valve stem A, the shank E carrying the
plunger H, and the flexible cap I having the outwardly projecting lip J to more
closely come in contact with the sides of the hollow stem A and all arranged to
normally permit the passage of air through the stem in one direction, and check its
return in the opposite direction, substantially as described.
Eighth. A pneumatic tire provided with an automatic valve consisting of an
inflexible or metallic shank having a flexible cap adapted to normally close the
inlet aperture of the tire and to be distended to open the same when required,
substantially as hereinbefore described.
Ninth. A syphon bottle provided at its discharge and inlet end with an auto-
matic valve consisting of an inflexible or metallic shank carrying a flexible cap,
said flexible cap adapted to normally close the discharge from the bottle and also
adapted to be distended to open said discharge, substantially as described.
Dated this 30th day of August 1892
D. YOUNG & Co.,
11 & 12, Southampton Buildings, London, W.C.,
Agents for the Applicants.