Year: 1899

page_text: I, SÖREN CHRISTIAN SORENSEN, of 34, Klostergade, Aarhus, Denmark, Gas
Fitter and Master-turncock, do hereby declare the nature of this invention to
be as follows:-
This invention relates to an improved water cock, its object being to produce
a self-closing non-jerking water cock.
To this end, the invention is characterized by the formation of the cock body
with a closable annular opening intermediate of and connecting its supply and
outlet bores, and by the application to the cock body of an elastic membrane
mounted in a cup secured to the cock body and adapted to close such annular
opening and fitted with an annular seating opening from the cup interior to the
cock outlet, and of a valve serving to close said annular seating and opened by
the depression of an externally projecting stem and closed by a spring, the cup
interior being connected with the cock supply by a channel of variable area, as
hereinafter more particularly described in constructional form.
The cock body has the usual means of connecting it to a water supply pipe and
a suitable outlet, and is formed with an annular flanged opening intermediate
of and connecting its supply and outlet bores and through which the water must
necessarily pass in flowing from the outlet.
Below this opening, the cock body is fitted with a hemi-spherical cup securing
a transverse elastic membrane which normally bears against the supply side
of the flanged opening so as to shut off access to the cock outlet (being borne
thereagainst by a spring hereinafter referred to), but, when not closing such
opening, permits of the water flowing freely from the cock supply through the
said opening to the cock outlet.
On the part around the flanged opening, the membrane is exposed to the
pressure of the water supply, which latter also obtains access to the cup interior
by a channel the area of which can be adjusted by means of a screw.
Centrally of the flanged opening, the elastic membrane is fitted with a flanged
bored piece serving to connect the cup interior with the cock outlet and secured
by an under plate shaped nut, and the under side of which bored piece forms an
annular seating for a valve fitted with an elastic ring adapted to close such seat-
ing and with a steam which passes freely through the bored piece and a stuffing
box and is fitted with a press button and with a spring which normally tends
to close the valve against its seating.
The operation of the improved cock is as follows:-
When the cock is shut, the cup interior will be full of water, the pressure of
which upon the underside of the valve and of the membrane will cause the
opening through the bored piece between the cup interior and the cock outlet

page_text: and also the said flanged opening between the cock supply and outlet to be
kept closed.
If the cock is to be opened, the valve button is depressed so as to lower the
valve from its seating, which opens the cup interior to the atmosphere and per-
mits the water in the former to pass through the bored piece to the cock outlet,
which relieves the pressure on the underside of the membrane, which will then,
owing to the pressure of the supply on its upper side, be borne away from the
said annular opening so as to allow the water freely to escape from the cock
supply through the annular opening to the cock outlet as long as the valve button
is kept depressed.
Upon such button being released, the spring will cause the valve to shut on
its seating, whereupon, the cup interior will gradually fill with water passing
through the said variable channel, which will cause the membrane to gradually
close the flanged opening and gradually shut off the outflow of water, avoiding
all jerking thereof in the supply pipe.
Dated this 15th day of Sentember 1800
DAY, DAVIES & HUNT,
Chartered Patent Agents, 321, High Holborn, London, W.C.,
Agents for the Applicant.
I, SÖREN CHRISTIAN SÖRENSEN, of 34, Klostergade, Aarhus, Denmark, Gas
Fitter and Master-turncock, 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 a self-closing non-jerking water-cock, and is character-
ized by the formation of the cock body with a closable opening intermediate of
and connecting its supply and outlet bores, and by the application to the cock
body of an elastic membrane mounted in a cup secured to the cock body and
adapted to close and to unclose such intermediate opening, the membrane being
fitted with an annular seating opening from the cup interior to the cock outlet,
and with a valve serving to close and to unclose the opening of said annular
seating, the valve being opened by the depression of an externally projecting
stem and being automatically closed by a spring, and the cup interior being
connected with the cock supply by a channel of variable area, as hereinafter
more particularly described with reference to the constructional form represented
on the accompanying drawing.
The cock body, a, has the usual means, b, of connecting it to a water supply
pipe, and a suitable outlet, c, and is formed with a flanged opening, , inter-
mediate of and connecting its supply and outlet bores and through which the
water must necessarily pass to flow from the outlet.
The opening, d, is formed by an annular flange, d, below which the cock body
is fitted with a hemi-spherical cup, f, and an intermediate transverse elastic
membrane, e, which latter normally bears against the supply side of the flanged
opening, so as to shut off access to the cock outlet (being borne thereagainst
by a spring, r, hereinafter referred to, plus the under pressure of the water
supply), but, when not closing such opening, permits of the water flowing freely
from the cock supply through the said opening to the cock outlet.

page_text: On that part of it which surrounds the opening, d', the membrane, e, is con-
stantly exposed to the pressure of the water supply, which latter also obtains
access to the cup interior by a channel, h, the area of which can be regulated
by means of a screw, i.
Centrally of the opening, d', the elastic membrane, e, is fitted with a flanged
bored piece, k, serving to connect the cup interior with the cock outlet and secured
by an under plate shaped nut, l. The under side of the piece, k, forms an
annular seating for a valve, n, which is fitted with an elastic ring, m, adapted
to close against such seating and with a stem, o, which passes freely through
the piece, k, and through a stuffing box, p, and is fitted with a press button, q;
and with a spring, r, which latter normally tends to close the valve n, against
its seating.
The operation of the improved cock is as follows:-
When the cock is shut, the cup interior, g, will be full of water, the pressure
of which upon the underside of the valve, n, and of the membrane, e, plus that
of the spring, r, will cause the opening through the bored piece, k, between the
cup interior, g, and the cock outlet, c, and also the opening, d, between the cock
supply and outlet to be kept closed.
If the cock is to be opened, the valve button, q, is depressed so as to lower the
valve, n, from its seating. This opens the cup interior to the outlet, c, and per-
mits water in the former to pass through the board piece, k, to the cock outlet,
which relieves the pressure on the underside of the membrane, which latter will
then, owing to the pressure of the supply on its upper side, be borne away from
the opening d, so as to allow the water freely to escape from the cock supply
through such opening to the cock outlet as long as the valve button is kept de-
pressed.
Upon such button being released, the spring, r, will cause the valve, n, to again
shut on its seating, whereupon, the cup interior, g, will gradually fill with water
passing through the channel, h, which will cause the membrane, e, to gradually
close the opening, d', and gradually shut off the outflow of water, avoiding all
jerking thereof in the supply pipe.
The larger the transverse sectional area of the channel, h, the quicker will
the opening,, be closed, and by means of the screw, i, this passage may be
given such an area that all jerking in the water-pipe will be avoided. The
closing of the opening, d, is not dependent upon the greater or smaller speed
with which the button, q, is moved upward by the pressure of the spring, r.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what
I claim is:-
1. A self-closing, non-jerking water-cock, characterized by a cup covered by
an elastic membrane exposed to the water-pressure and arranged in such a manner
as to be adapted to bear against an annular valve-seat in the cock-body forming
the entrance to the cock outlet, the cup interior being connected with the cock
inlet by a channel of adjustable area, in combination with a valve located in the
membrane and having its valve-stem passed out through the cock body and acted
upon by a spring having a tendency to shut the valve, as set forth.
2. A constructional form of the water-cock described in Claim, 1, character-
ized by a cup, f, covered by an elastic membrane, e, adapted to bear against an
annular valve-seat, p, which forms the entrance, d, to the cock outlet, c, while
the part of the membrane surrounding this seat is exposed to the pressure of
the water supply, the cup interior, g, communicating by means of a channel, h,
with the cock inlet, the underside of the membrane also having an annular
valve-seating, k, against which a valve, n, having a stem carried through the
valve-seating, d, and the cock-body, is pressed by means of a spring, as set forth.

page_text: 3. In cocks of the kind described in Claim, 1, and 2, the arrangement of an
adjustable screw, i, serving to more or less close the channel, h, for the purpose
of varying its transverse sectional area, as set forth.
Dated this 15th day of June 1900.
DAY, DAVIES & HUNT,
Chartered Patent Agents,
321, High Holborn, London, .W.C., Agents for the Applicant.