Improvements in Valves for Pneumatic Tubes and other Inflatable Objects.
Year: 1896

page_text: Date of Application, 13th Nov., 1896
Complete Specification Left, 7th Aug., 1897-Accepted, 25th Sept., 1897
PROVISIONAL SPECIFICATION.
Improvements in Valves for Pneumatic Tubes and other Inflatable
Objects.
I, JOHN CLINTON MACSPADDEN of St. Joseph, County of Buchanan, Missouri,
U.S.A., Manufacturer, do hereby declare the nature of this invention to be as
follows:-
In the application of the valve of this invention to a pneumatic cycle tyre this
latter is formed with or has attached to it a small tubular projection through which
the tyre is inflated. At the end of this small tube and upon the inner surface of the
tyre is attached, say by cement, a valve seating and above this and also to
the inner surface of the tyre is attached by cement, springs, or by its edges
engaging in slits made in the tyre, a valve in the form of a flat disc of india rubber
or other suitable material formed with projecting arms for fastening purposes.
In inflating the tyre the air passes through the small tubular projection and
through the valve seating against the valve which is thereby raised for the ingress
of air. Upon cessation of the inflation the valve acting as a check valve returns
to its seating. The outer end of the small tubular projection or inflating tube
is fitted with a screw cap for preventing access of dirt or dust to the valve.
Dated this 13th day of November 1896.
THOMAS R. SHILLITO,
89 Chancery Lane, London, W.C., Agent for the Applicant.
Improvements in Valves for Pneumatic Tubes and other Inflatable
Objects.
I, JOHN CLINTON MACSPADDEN of St. Joseph, County of Buchanan, Missouri,
U.S.A., Manufacturer, 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 a check valve for pneumatic or air inflated tubes or tyres
and other objects such as footballs, punching bags and the like.
In the accompanying drawing Fig. 1 is a transverse section of a pneumatic tyre
and valve applied thereto in accordance with the invention. Fig. 2 a section
on line of Fig. 1. Figs. 3 and 4 detail perspective views of the valve and
valve seat. Figs. 5, 6, 7, sections of a tyre on or about the line -z of Fig. 1
illustrating modifications. Fig. 8 a section on line y-y of Fig. 7.
A is an air tube and a the air aperture of a pneumatic tyre. B the inflation.

page_text: tube which communicates with the aperture a and may be of any suitable con-
struction and connected with the tube A in any approved manner although it
is preferred to form it of the rubber portion b attached to or formed in one piece
with the tube A and the metallic portion c secured inside or outside the portion b
as desired.
C is a valve seat of sheet rubber or other suitable material preferably arranged
around the aperture a and attached to the inside of the tube A. D is the valve
body formed of silk, silk and rubber, or other fabric or suitable material
that will resist the passage of air, or simply of a thin piece of rubber. Said valve
body is formed with two diametrically opposite branches d for connection with the
tube A by rubber cement.
When the air tube A is being inflated the valve body D will be lifted away
from the aperture a and upon cessation of the inflation the air in the tube will
quickly force and hold the valve against its seat.
The inflation tube B is not obstructed by a valve or any other device and there-
fore in order to prevent the entrance of dust and grit therein, which might impede
the operation of the valve, the metallic portion c is provided with a removable
screw cap E having inside an elastic disc for taking against and closely shutting
off the end of the tube c.
The
When desired, the attachment of the branches d of the valve D may be
strengthened by the cross strips e of rubber (Fig. 5.) which may be attached to
the branches and to the tube A by rubber cement or other suitable means.
connection of the valve D with the tube A may also be affected by coiled
springs (Fig. 6). Another method of connection is shewn in Figs. 7 and 8
in which the branches d of the valve are passed through slits g in the tube and
are attached to the outside of the tube by rubber cement or other suitable means
and the slits g also closed airtight by like means.
A removal of the compressed air from the tyre may be effected by inserting
a blunt instrument into the inflation tube and pressing back the valve.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is:-
1. The combination of a device such as a wheel tyre adapted to be inflated
and having an aperture a, the annular sheet rubber seat C arranged upon the inside
of the tyre and around the aperture a, and secured by rubber cement to the
inside of the tyre, and the valve formed of a sheet of flexible material arranged
within the tyre and over the seat c and aperture a and connected by rubber cement
to the tyre, substantially as described and shewn.
2. The combination of a device such as a wheel tyre adapted to be inflated and
having an aperture a and also having slits g on opposite sides of the aperture a,
and the valve formed of a sheet of flexible material arranged within the tyre
and over the aperture a, and having branches extended through the slits g, and
secured to the outside of the tyre, substantially as described and shewn.
Dated this 7th day of August 1897.
THOMAS R. SHILLITO,
89 Chancery Lane, London, W.C., Agent for the Applicant.