Air Tight Joint Connecting Valves to the Air Tubes of Pneumatic Tyred Wheels.
Year: 1895

page_text: Date of Application, 30th Sept., 1895
Complete Specification Left, 28th Nov., 1895-Accepted, 28th Dec.,
1895
PROVISIONAL SPECIFICATION.
An Air Tight Joint Connecting Valves to the Air Tubes of
Pneumatic Tyred Wheels.
I, JOHN BRYAN of 61 Ogden Street Ardwick, Manchester in the County of
Lancaster Cycle Mechanic do hereby declare the nature of this invention to
be as follows:-
My invention consists of a joint in one piece through which the air in the air-
tube cannot escape, as my experiments show. My invention consists of a flat
circular button of metal, preferably brass, varying in its dimensions with the size
of the air-tube.
The edge of the button for its entire circumference is divided by a deep groove G,
Figs. III, IV, V, into two wide flanges A. Figs. I, III, IV, V, and B, Figs. II,
III, IV, V, whose opposing edges are rounded E, Figs. III, IV, V.
These flanges are an inner flange A, Figs. I, III, IV, V, and an outer flange B,
Figs. II, III, IV, V. The upper surface of the inuer flange is flat, A,
Figs. I, III, IV, V. From the centre of the lower surface of the outer flange
projects a short collar C Figs. II, III, IV, V. A circular hole D Figs. I, II,
III, IV, V, is drilled through the centre of the button, and furnished with a
female thread into which the valve is screwed.
The following are the measurements of my invention as used on an air-tube 14 inch
in diameter:
Diameter of button
Thickness of button
-
Thickness of each flange
Width of groove between flanges
Depth of
groove
Depth of collar
Diameter of threaded hole
My invention is used as follows:-
inch.
inch.
inch.
1inch.
16
inch.
-
1 inch.
To inch.
A circular piece of india-rubber inch in diameter is cut from the wheel surface
of the air-tube. The air-tube T, Fig. V is then stretched so as to enlarge the
opening thus made, and the button introduced into the opening in such a manner
that the inner flange lies in the interior of the air-tube A, Fig. V, the outer flange
rests on the wheel surface of the air-tube B, Fig. V, and that part of the air-tube
immediately surrounding the opening thus made in it, lies in the groove G, Fig. V
between the two flanges. The flanges are now pressed together at their entire
circumference, so that their rounded opposing edges are almost in contact E, Fig. V,
and grip the india-rubber tightly. The valve is then screwed into the threaded
hole D, Figs. I, II, III, IV, V, in the centre of the button.
The air-tube may now be so inflated as to burst, but no air escapes at or about
the button.
Dated this 28th day of September 1895.
TAUNT DDVA T

page_text: An Air Tight Joint Connecting Valves to the Air Tubes of
Pneumatic Tyred Wheels.
I, JOHN BRYAN, of 61 Ogden Street, Ardwick, Manchester, in the County of
Lancaster, Cycle 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:-
My invention relates to an improvement in joints for connecting valves to the
air tubes of pneumatic tyred wheels and the chief object of my invention is to
make a joint in one piece through which the air in the air tube cannot escape.
I accomplish this object by the use of a flat metal button substantially as
hereinafter described with reference to the accompanying sheet of drawings in
which-
Figures 1 and 2 are plan views respectively of the top and bottom of the button.
Figure 3 is a transverse vertical section of the button.
Figure 4 is a transverse vertical section of the air tube of a pneumatic tyre with
the button secured in position.
Figure 5 is a similar view to Fig. 4 but showing the valve screwed into the
button.
The button a consists of a flat disc of brass or other suitable metal with a central
screw threaded hole a¹. The edge of the button for its entire circumference is
divided by a deep cut groove into two flanges a a³ whose opposing edges are
preferably rounded off as clearly shown in Figs. 3 and 4. The upper surface of
the button is flat but the lower surface has a short central collar a adapted to fit
in a corresponding hole formed for it in the wheel rim, not shown. The india
rubber air tube b has a small circular hole cut in it and the tube is then stretched
to enlarge the opening sufficiently to receive the button a, which is then introduced
in such a manner that the flange a lies inside the air tube and the flange a³ remains
on the outside while that part of the tube surrounding the opening made in it lies
in the annular groove between the two flanges. The rounded opposing edges are
then pressed together so as to grip and hold the india rubber tightly as shown in
Fig. 4, and the joint is completed by screwing the threaded stem of the valve c
into the threaded hole a¹ of the button as shown in Fig. 5.
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 combination with the air tube of a pneumatic tyre, of a metal button
having a central threaded hole a¹ and two flanges a² as substantially as and for the
purposes herein set forth.
2. In combination, the button a, the air tube b and the valve c all substantially
as herein set forth.
Dated this 06th of N
1005
H. B. BARLOW & GILLETT,
17 St. Ann's Square, Manchester, Agents for Applicant.