Improvements in and relating to Valves.
Year: 1894

page_text: Date of Application, 30th Jan., 1894
Complete Specification Left, 17th Oct., 1894-Accepted, 17th Nov., 1894
PROVISIONAL SPECIFICATION.
Improvements in and relating to Valves.
HENRY SMITH 154 Noel Street Nottingham Lace Draughtsman do hereby
declare the nature of this invention to be as follows:-
My invention relates to improvements in and relating to valves of the kind used
in connection with pneumatic tyres for cycles, and for other purposes of a similar
character.
Hitherto the valves used for the above mentioned purposes have generally relied
upon rubber leather, or other perishable material for the valve action.
Now the object of this invention is the construction of a valve and its connected
parts without the use of rubber, leather or other similar perishable material and
which will prevent the air in the air tube passing through it.
According to this invention the air tube of a pneumatic tyre, or the air reservoir
in other cases, is fitted with a plug of metal or other suitable material. Such plug
has a hole from the inside of the air tube to the outside of the body of the plug
and a second hole from a different position in the outside of the body of the plug to
the free end of the same. This plug, which is preferably taper, is fitted with a
barrel within which is a recess, so arranged that when the barrel is in one position
it forms a connection between the two holes in the outside of the body of the plug
and consequently between the air tube and the pump or atmosphere. When the
barrel is turned to any other position both holes in the outside of the body of the
plug are closed, and the air retained in the tube.
The outer end of the plug is prepared to receive a ball or other valve, which
may however be attached to the pump. There are means provided for holding the
barrel and plug in their proper relative positions.
W. H. POTTER, Wh. Sc.,
Newcastle Chambers, Nottingham, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Valves.
HENRY SMITH 154 Noel Street Nottingham Lace Draughtsman 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 improvements in and relating to valves which are
particularly applicable to pneumatic tyres but which may be used for other similar
purposes, the object of this invention being the construction of a valve without the
use of leather, rubber, or other similarly perishable materials.
This invention is hereafter referred to as applied to pneumatic tyres but the
shape of the valve may be altered to suit the requirements of different applications
without departing from the invention.
A valve constructed according to this invention has a plug of metal, ebonite, or
other suitable material, and this plug has a hole which is in communication with
the air tube, and another hole which is in communication with the atmosphere.
These holes are brought to different positions in the outside of the plug, which is

page_text: fitted with a barrel having in the interior of the same a groove or grooves, so
arranged that when the barrel is in one position a groove in the same forms a
connection between the two holes in the plug, and that when the barrel is in any
other position it closes both holes in the plug. The valve is fitted with means
for attaching it to the air tube, for holding the barrel in a placed position, and for
the reception of the air pump.
The accompanying drawing shows in sectional elevation a valve constructed
according to this invention, and is referred to in the following detailed
description.
The plug a which is preferably conical at the valve portion is fitted at the upper
end with a flange b, washer c, and nut d, these parts being used for attaching the
valve to the tyre and air tube in the usual manner. The plug is fitted with a
barrel e having therein an internal groove or grooves f which, when the barrel is
in the position shown on the drawings, forms a connection between a hole which
is in communication with the air tube, and a hole h which is in communication with
the atmosphere or air pump. These holes terminate at different positions on the
outside of the plug, and it will be seen that if the barrel is turned to any other
position it closes the holes g and h, and destroys the connection between them. In
the drawing the groove fis shown by dotted lines, and by preference there is a
similar groove in the other half of the barrel, so that the barrel may be turned
either way for connecting the holes y and h. The plug is also fitted with a
washer and nut for holding the barrel in position, and with a cap m for keeping
it free from dirt. The lower end of the plug may be fitted with a retaining valve,
but preferably this is attached to the air pump.
In a modification of this invention the plug is made parallel and has a collar up
to which the barrel is pressed. In another modification the plug has holes in it,
as described with reference to the accompanying drawing and is fitted to revolve
in a grooved barrel or casing which is attached to the air tube. In this modi-
fication one of the holes in the plug may be dispensed with, and the groove in the
barrel open into a space between the ends of the plug and barrel.
The holes in the surface of the plug whether taper, parallel, fixed, or movable
may be on the same or opposite sides, or in any intermediate position, the groove
in the barrel being arranged accordingly.
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. A valve for pneumatic tyres and similar purposes in which a plug of metal,
ebonite, or similar unperishable material has two holes on the surfaces of the same,
one hole communicating with the atmosphere, and the other with the air reservoir;
and the combination with the above plug of a barrel having in the interior of the
same a groove or grooves for the purpose of forming a connecting passage between
the holes in the plug substantially as herein described.
2. A valve for pneumatic tyres and similar purposes constructed substantially as
shown and described in the accompanying drawings and Specification.
Dated this 16th day of October 1891.
W. H. POTTER, M.I.M.E.,
Newcastle Chambers, Nottingham, Patent Agent.
W. H. POTTER, M.I.M.E.,
Newcastle Chambers, Nottingham, Patent Agent.