Improvements in Valve-cocks or Taps.
Year: 1892

page_text: Date of Application, 14th Mar., 1892
Complete Specification Left, 2nd May, 1892-Accepted, 18th June, 1992
PROVISIONAL SPECIFICATION.
Improvements in Valve-cocks or Taps.
I, WILLIAM GORDON POTTER, of 8, Middle Pavement, Nottingham, in the
County of Nottingham, Consulting Engineer do hereby declare the nature of
this invention to be as follows:-
My invention relates to valve-cocks or taps and comprises the improvements
hereinafter mentioned.
One feature of my said invention is the provision of a valve of spherical, hemi-
spherical or other suitable shape in the valve-casing, at the pressure side of the
diaphragm, which valve is fixed upon a spindle extending in one direction through
the aperture in the valve-seat and in the reverse direction into a guide formed on a
screw-cap or cover secured in or upon one end of the valve-casing.
A spring is combined with the said valve and its spindle in such a manner as to
press the said valve against its seat. Moreover the arrangement of the valve is
such that the fluid pressure assists the said spring in pressing the valve against its
seat. I find it advantageous to use a ball or a hemi-spherical piece of leather,
india-rubber or other suitable material as the valve, and to pass the spindle through
the said valve; and I prefer to make the said spindle with a cup-shaped flange or
collar to receive the said valve when made in the form of a ball or the like.
I provide suitable means for opening the cock or tap by pushing the valve away
from its seat and thus compressing the said spring. For instance, I arrange in
one end of the valve-casing, a screw-spindle for this purpose; or I provide a lever
arranged to be operated by hand or automatically by a float or piston or otherwise.
I sometimes provide the spindle with a valve on each side of the valve-seat,
so that, should one valve fail, the other valve can be made use of for closing the
cock or tap.
To facilitate the repairing of the cock or tap, I find it advantageous to make
the valve-seat with a bush which can be readily removed and replaced when
necessary.
My improved cock or tap is applicable for a great variety of purposes, and can
be used for steam, water and other fluids. It is, moreover, advantageous for use
as a ball-cock for regulating and controlling the flow of fluids into tanks or other
vessels.
When my improved cock or tap is to be used for acids or the like, I prefer to
make the valve or valves of a composition which will resist the action of such acids
or the like.
Dated this 14th day of March 1892.
D. YOUNG & Co.,
11 & 12, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Valve-cocks or Taps.
I, WILLIAM GORDON POTTER, of 8, Middle Pavement, Nottingham, in the
County of Nottingham, Consulting 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 :-
My invention relates to valve-cocks or taps and comprises the improvements

page_text: I have described a valve-cock or tap in which spherical valve or ball of india-
rubber or other suitable material is fitted to a valve-seat in a diaphragm and is
combined with a spindle for forcing it against or away from its seat as the case
may be, the valve-casing being so constructed that the valve can be readily removed
and replaced, and a spring being preferably combined with the said valve to return
or assist in returning the same to its seat.
My present invention is chiefly designed to improve the construction of valve-
cocks or taps of this kind or class. My present improvements are, however, also
applicable to cocks or taps in which the valve is of hemi-spherical or other suitable
shape.
One feature of my said invention is the combination of a valve of spherical,
hemi-spherical or other suitable shape and of india-rubber, leather or other suitable
material, a spindle upon which the said valve is mounted and which works in a
guide in the removable cap or cover, a spring which acts upon the said spindle to
press the valve against its seat, and means for opening and closing the valve
by hand.
My said invention, moreover, comprises other improvements hereinafter set
forth.
In the accompanying drawings I have shown how my said invention may be
conveniently and advantageously carried into practice.
Figure 1 is a vertical longitudinal central section of one form of valve-cock
constructed in accordance with my said invention, and
Figures 2, 3 and 4 are similar views showing other modifications of my improved
valve-cock.
Like letters indicate corresponding parts throughout the drawings.
a is the casing; b is the valve-seat which is formed in a diaphragm b¹ in the said
casing; c is the valve; d is a removable cap or cover secured in the casing a so as
to permit the ready removal and replacement of the valve c.
The valve c is securely held between the spindle e and the screw-spindle g, and
the said spindle e is acted upon by a spring tending to press the valve against
its seat.
In the form of my invention shown in Figure 1, the spindle e is provided with a
cup-shaped flange e¹ in which the valve crests, and the said spindle e works in a
guide di formed on the said cap or cover d; the spring f presses against the under
side of the flange or collar e' and tends to move the valve upward and thus press it
against its seat. The spindle e extends through the valve c, and is fitted into the
lower end of the operating screw-spindle g, which extends through a stuffing-box
in the usual manner. The lower end of the screw-spindle g is provided with an
inverted cup-shaped flange g¹ fitted to the valve c so that it will bear against a
considerable area of the surface of the said valve. The spindle e may, if desired,
be rigidly secured in the spindle g. I prefer, however, that the said spindles should
be separate and readily detachable as shown, in order to facilitate the withdrawal
of the valve c from the casing a when the cap d is removed, and the placing of a
new valve on the spindle e when required. The valve shown in Figure 1 is made
of two interchangeable hemi-spherical pieces of leather, india-rubber, ebonite,
vulcanite, steatite or other suitable material. It may, however, be made of a
single spherical piece of such material, or of a single hemi-spherical piece as shown
in Figure 3.
In the form or modification of my improved valve-cock shown in Figure 2, the
valve is securely held in place by the flanges or collars e¹, 9', and the spindle e does
not extend through the valve c. As the spring presses the spindle e against the
valve c and the said valve against the spindle g, it is evident that the valve and the
said spindles will move up and down together when operated to open and close
the valve.
In the modification of my invention shown in Figure 3, I employ two hemi-
spherical valves c, c', one below and the other above the valve-seat b. By this
means, should the valve c, by reason of its being damaged or worn, fail to close the

page_text: passage for the fluid, the additional or auxiliary valve c¹ can be brought into
operation by screwing down the spindle until this valve is pressed against the
valve-seat. In the valve-cock shown in this figure, the spindle è is formed with an
enlargement or collar e³, and the valves e, e¹ are held between this collar and the
collars or flanges e³, g¹, respectively, which, in this case, are flat or disc-shaped.
In Figure 4, I have shown a modified form of my improved valve-cock adapted
for use as a ball or float valve. The spindle e is coupled to the short arm of the
float-lever m which is pivoted at m¹ to the casing a. The cup-shaped part gl of
the spindle g bears against the valve c so that the said valve can be closed by hand
when required.
To facilitate the repairing of the cock or tap, I find it advantageous to make
the valve-seat with a bush which can be readily removed and replaced when
necessary.
My improved cock or tap is applicable for a great variety of purposes, and can
be used for steam, water and other fluids.
When my improved cock or tap is to be used for acids or the like, I prefer to
make the valve or valves of a composition which will resist the action of such acids
or the like.
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 :-
First. The combination of the valve c, the spindle e, the spring fand means for
opening and closing the valve by hand, substantially as herein before described.
Second. The modification of my invention wherein I employ an additional or
auxiliary valve c¹, substantially as, and for the purpose, above specified.
Third. The improved valve-cock or tap consisting of the parts constructed and
combined substantially as described with reference to either of the forms or
modifications shown in the accompanying drawings.
Dated this 80th day of April 1892.
Сир тоя от полот
pe
D. Young & Co.,
VILLIAM G. POTTEN.
11 & 12, Southampton Buildings, London, W.C., Agents for the Applicant.