Automatic sell Fitting Plug Ior Gas, water, Steam, or other Cocks.
Year: 1886

page_text: I, JAMES HENRY SMITH of 3 Hetley Road Shepherds Bush in the County of
Middlesex, Engineer, do hereby declare the nature of this invention to be as
follows:-
The object of my invention is to prevent leakage and take up the wear caused
by constant use of cocks, and shall at all times be tight with perfect. freedom of
turning and be applicable to all existing cocks now in use. It consists in the
employment of a spring either flat or spherical, inside or outside the cock, so
arranged that it is always pressing on the plug to keep it in the fitting position.
In connection with the above I also apply if necessary or desirable a stop, ratchet
and pawl or other appliance, which will necessitate the plug always being turned
one way only, in other words, part of a turn to the right opens and shuts the
passage way, by this means the plug will always keep a true hole by its revolving
instead of reciprocating. A spring may also be applied so as to bring the plug to
the shut off position automatically.
Automatic sell Fitting Plug Ior Gas, water, Steam, or
other Cocks.
I JAMES HENRY SMITH of 3 Hetly Road Shepherds Bush in the County of
Middlesex, 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 :-
The object of my invention is to prevent leakage and to take up the wear
caused by constant use of cocks and shall at all times be tight with perfect freedom

page_text: of turning and be applicable to all existing cocks now in use. My invention
consists in the employment of a spring either flat or spherical inside or outside the
cock, so arranged that it is always pressing on the plug to keep it in the fitting
position. In connection with the above I also apply if necessary or desirable a
stop, ratchet and pawl, or other appliance which will necessitate the plug always
being turned one way only, in other words, part of a turn to the right opens and
shuts the passage way, by this means the plug will always keep a true hole by its
revolving instead of reciprocating. A spring may also be applied so as to bring
the plug to the shut off position automatically.
Fig. 1 of the accompanying drawings is an elevation of an ordinary plug cock
with spring attachment A, Fig. 2 is an elevation and part section of the same,
c is the plug into which the spring case A is screwed by a screw A¹, b is an
ordinary washer, a the spring, the case A when screwed in its place compresses the
spring a against the washer b which rests upon the body of the tap and pulls the
plug down, thereby preventing leakage, the action of the spring being always to
keep the plug automatically in a self fitting condition and take up any wear that
may arise from constant use.
Fig. 3 shews the spring arrangement for automatically bringing the plug to a
shut off position, c is the plug and c¹ is a continuation of the same, a is a flat volute
spring the inner end of which is inserted in a slit cut in the part c¹ of the plug the
other end passes through a slit in the body to the outside, d is the plug nut. It
will be readily understood that on the tap being turned and then released the
spring will automatically bring the plug back to the shut off position..
Fig. 4 shews the arrangement for necessitating the plug always being turned in
the one direction. a is the crosshead of the plug, b is a ratchet fixed on the plug,
is a pawl and d a spring attached to the body A of the tap.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is
1. The employment of a spring case in connection with the plug of a tap so as
to keep the plug always in a fitting position' and thereby prevent leakage, as
herein set forth and shewn on the drawings.
2. The employment of a spring for the purpose of automatically bringing the
plúg back to the shut off position, as herein described and shewn on the drawings.
3. The ratchet and pawl arrangement for necessitating the plug always to be
turned in the one direction to open and shut off supply.
Dated this 26th day of June 1886.