An Improved Valve for Inflating and Deflating Pneumatic Tyres.
Year: 1892

page_text: Date of Application, 21st Jan., 1892
Complete Specification Left, 19th Oct., 1892-Accepted, 26th Nov., 1892
PROVISIONAL SPECIFICATION.
An Improved Valve for Inflating and Deflating Pneumatic Tyres.
TOM ROTHWELL and FRED ROTHWELL trading as "The Eclipse Machine Co."
Cycle Manufacturers, at Viscount Street, Rochdale Road, Oldham, in the County
of Lancaster, do hereby declare the nature of this invention to be as follows
:-
Our invention relates to a valve for retaining or relieving the pressure of air in
pneumatic tyres as used in cycles, carriages and other vehicles.
1st. We make an outer casing A. enlarged at the top so as to button into the air
tube and to bear against the top of the rim or felly of the wheel, immediately under
this head or top we make square B to prevent it from turning round in the rim or
felly, and on this we put a washer with a spuare hole made to the shape of the rim
or felly, and the remaining portion of the outer casing is chased or screwed, so as to
take a nut to secure the outer casing to the rim or felly.
This outer casing is common to most valves for this purpose, but our invention
relates more particularly to the internal arrangement of the valve.
2nd. We turn out the casing to form an air chamber C, and seating for the
valve D, in a suitable manner as shown in accompanying drawings Figures 3, 5
and 9.
3rd. We make the spindle E and disc D for valve, of convenient shape, as shown
by D in Figures 3, 5, 6, 7, 8 and 9 of metal, ebonite, india rubber or other suitable
material.
It will be seen that this shape may be varied in many ways, but we prefer to use
one of the methods shown in drawings, but we reserve the right to use any other
suitable shape.
On the spindle E Figures 3 and 9 we put a spiral spring F and the cover Figure 2
is then placed with the spindle E through the centre hole H Figure 2 and the
cover is then screwed into the casing as shown in drawing Figures 3, 5 and 9.
To allow the air to pass out of the air chamber C, we make one or more holes as
shown J in Figure 2.
In the bottom of air chamber C Fig. 3, 5 & 9, we put a small washer K with hole
in centre, made of india rubber or other suitable substance.
It will now be easily understood that if the spindle E Figure 3 be put into the
casing with the disc D downwards and the spiral spring F, and cover Figure 2 on
the upper portion of the spindle, and secure the cover in the head or top of casing,
in any convenient way, that the spiral spring F will press the valve D Figures 3,
and 9, firmly down upon the seating K and prevent the air escaping from the tyre,
and when we wish to deflate the tyre we lift the valve by pushing a small spindle
inserted at the bottom of the valve.
We thus have a complete and effective inflating and deflating valve as shown in
section Figures 3, 5 and 9.
We also claim as an alternative method a valve held down by a flat spring, in
some such way as shown in Figures 4 and 5, or we could open out the top and
bottom of the casing, and have the spring and guide on the lower side of the valve
seating as shown in Figure 9.
These are all modifications of our invention.
Dated this 19th day of January 1892.
TOM ROTHWELL.
FRED ROTHWELL.

page_text: COMPLETE SPECIFICATION.
An Improved Valve for Inflating and Deflating Pneumatic Tyres.
TOM ROTHWELL and FRED ROTHWELL, trading as the "Eclipse Machine Co."
'Cycle Manufacturers, at Viscount Street, Rochdale Road, Oldham, in the County
of Lancaster, 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 a valve for retaining or relieving the pressure of air in
pneumatic tyres as used in cycles, carriages, and other vehicles.
1st. We make an outer casing A enlarged at the top, so as to button in the air
tube, and to bear against the top of the rim or felly of the wheel. Immediately
under this head or top, we make square B to prevent it from turning round in the
rim or felly, and on this we put a washer with a square hole made to the shape of the
rim or felly, and the remaining portion of the outer casing is chased or screwed, so
as to take a nut, to secure the outer casing to the rim or felly.
This outer casing is common to most valves for this purpose, but our invention
relates more particularly to the internal arrangement of the valve.
2nd. We turn out the casing to form an air chamber C and seating for the
valve D in a suitable manner, as shown in the drawings Figures 3, 5, and '9, filed
with Provisional Specification.
3rd. We make the spindle E and disc D for valve, of convenient shape, as-shown
by D in Figures 3, 5, 6, 7, 8, 9, of metal, ebonite, india rubber, or other suitable
material.
It will be seen that the shape may be varied in many ways, but we prefer to use
one of the methods shown in drawings, but we reserve the right to use any other
suitable shape.
On the spindle E Figures 3 and 9, we put a spiral spring F and the cover Figure 2
is then placed with the spindle E through the hole H Figure 2, and the cover is
then screwed, or otherwise suitably fixed into the casing, as shown in drawings
Figures 3, 5, and 9. To allow the air to pass out of the air chamber 'C, we make
one or more holes, as shown in Figure 2, J.
In the bottom of air chamber C Figures 3, 5, and 9, we put a small washer K
with hole in centre, made of india rubber, or other suitable material.
in
It will now be easily understood, that if the spindle E, Figure 3 be put into the
casing, with the disc D downwards, and the spiral spring F and cover Figure 2 on
the upper portion of the spindle, and the cover secured in the head or top of casing,
any convenient way, that the spiral spring F will press the valve D, Figures 3, 5,
and 9 firmly down on the seating K, and prevent the air escaping from the tyre.
To deflate the tyre, we insert a piece of wire, or any other suitable article up the
inlet hole in the bottom of the valve, and by this means, we lift the disc D from the
seat K, which immediately allows the air to escape. We thus have a complete
inflating and deflating valve, as shown in section 3, 5, and 9.
We also claim as an alternative method a valve held down by a flat spring, in
some such way as shown in Figures 4 and 5, or we could. open out 'the top and
bottom of 'the casing, and 'have the spring and guide on the lower side of the valve
seating as shown in Figure 9.

page_text: 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 :-
The construction of a valve for inflating and deflating pneumatic tyres, sub-
5 stantially as herein described and illustrated.
Dated this Eighteenth day of October One thousand eight hundred and
ninety-two.
TOM ROTHWELL.
FRED ROTHWELL.