IMPROVEMENTS IN COCKS FOR CONTROLLING THE DRAWING OFF OF LIQUIDS
Year: 1884

page_text: I, WILLIAM CLARENCE EDWARDS, of "Swiss Cottage Hotel," Forest Hill, in the
County of Kent, Civil Engineer do hereby declare the nature of my invention for
"IMPROVEMENTS IN COCKS FOR CONTROLLING THE DRAWING OFF OF LIQUIDS " to
be'as follows:-
My Invention relates to a Cock made of metal or other suitable material, of any
shape and in any number of parts, the Shell or body of same having a way
through it as in all ordinary Cocks, and is so arranged that the Key is moved
vertically, by means of a lever or levers, attached or otherwise. When the Cock is
operated upon the lever or levers are pressed either upwards or downwards, as
arranged, and so brings the way through the Key immediately over the way
through the Cock and allows the liquid to pass through. I attach or place a Spring
or Springs, either spiral or otherwise, immediately between the Key and the Shell
or body of the 'Cock or between the lever or levers and the Shell or body of the
Cock or both, so that immediately upon releasing the lever or levers the Key is
forced back into its original position, and so shuts itself off. I may make the Key
either parallel or conical. I also may or may not, as convenient, place a rest or
rests outside the Shell or body of the Cock so as to facilitate the movement of the
lever or levers by affording the operator a better purchase. The fulcrum of the
lever or levers is connected to the Shell or body of the Cock and the lever or levers
pass over, through, or under the Key as most convenient and projects beyond its
side or sides, or they may be connected with the Key, and so may be used either
to raise or lower the Key (as arranged) so as to bring the way through the Key
opposite the way through the Cock. I may also connect with the rest or rests, or
lever or levers, or at any convenient part a hook, or ring, so that in the event of
the Cock being required to be left open without the aid of manual pressure, it or
they rise or drop or slip over as the case may be, and connect the lever or levers
with the rest or rests, and so retains the way through the Key over the way
through the Cock.
I may also arrange to have an ordinary stuffing box fixed or screwed, or other-
wise attached to the inside of the Shell or body of the Cock for the Key to pass
through so as to prevent any leakage (from wear) taking place otherwise than at

page_text: -
the outlet of the Cock, or I may use to answer the same purpose a Disc made of
Indiarubber or other suitable material.
a
In drawing off liquids from all Cocks there is a pressure according to the height
of the supply, which in some cases becomes troublesome, so to alleviate this
I purpose making between the entrance of the Cock and the Key, or in the Key,
conical way, or the inlet smaller than the outlet, the minor oriface to be nearest
the inlet of the Cock, which is obvious that the liquid coming through a smaller
aperture, it passes in a Hydraulic form, and the way through the outlet of the
Cock being larger the liquid immediately expands to its original capacity and so
reduces the force of its flow from the Cock.
According to another arrangement I may make a Cock very similar to the
preceding description, with the difference that I so arrange the Key as to have a
rotary motion, the lever or levers having the Key itself for its or their fulcrum.
Attached to the Key and the Shell or body of the Cock is a spiral or other shaped
spring or springs, so that on operating the lever or levers, a tensile or torsionate
(according to kind of spring or springs used) strain is set up upon the spring or
springs; which upon the lever or levers being released causes the spring or springs
to replace the Key to its original position.

page_text: I WILLIAM CLARENCE EDWARDS of "Swiss Cottage Hotel" Forest Hill, in the
county of Kent, Civil Engineer, do hereby declare the nature of my said invention
for "IMPROVEMENTS IN COCKS FOR CONTROLLING THE DRAWING OFF OF LIQUIDS,"
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 a cock made of metal or other suitable material, of any
shape and in any number of parts, the shell or body of same having a way through
it as in all ordinary cocks, and so arranged that the key is moved vertically by
means of a lever or levers attached or otherwise.
My invention is shown in Figures 1 to 11 of the annexed drawings. The cock A
is operated upon by the lever or levers B which are pressed either upwards or
downwards, as arranged and so brings the way C through the key D immediately
over the way through the cock E and allows the liquid to pass through, I attach
or place a spring or springs F either spiral or otherwise, immediately between the
key D and the shell or body of the cock as shown at Figures 3 and 4 or between
the lever or levers B and the shell or body of the cock and surrounding the key D
or both, so that immediately upon releasing the lever or levers B the key D is
forced back into its original position and so shuts itself off. I may make the
key D either parallel or conical, and may also arrange to have an ordinary stuffing
box fixed or screwed or otherwise attached to the inside of the shell or body of the
cock for the key to pass through so as to prevent any leakage taking place other-
wise than at the outlet of the cock, or I may use to answer the same purpose &
disc made of indiarubber or other suitable material.
I also may as convenient place a rest or rests G outside the shell or body of the
cock so as to facilitate the movement of the lever or levers B by affording the
operator a better purchase.
The end H of the lever or levers B is connected by a pin I or other suitable
means to the shell or body of the cock and the lever or levers B pass over, through,
or under the key D as most convenient and projects beyond its side or sides, or
they may be connected with the key D and so may be used either to raise or lower
the key (as arranged) so as to bring the way through the key Copposite the way E
through the cock. may also connect with the rest or rests G, or lever or levers B
at any convenient part a hook J or ring, (as shown in Figure 2) so that in the event
of the cock being required to be left open may be slipped over the rest G.
In drawing off liquids-from all cocks there is a pressure according to the height
of the supply, which in some cases, becomes troublesome, so to alleviate this I make
in the way E of the cock, or in the key D, a conical way C, or the inlet smaller
than the outlet, the minor orifice to be nearest the inlet of the cock.
In Figure 11 I show another arrangement or modification of my invention in
which the lower extremity of the key D is tapered, in the casing or shell. In this
arrangement the way through the key is dispensed with and a stuffing box or
flexible disc K is provided.

page_text: According to another arrangement I make a cock very similar to the preceding
description, with the difference that I so arrange the key as to have a rotary
motion the lever or levers having the key itself for its or their fulcrum. Attached
to.the key and the shell or body of the cock is a spiral or other shaped spring or
springs, so that on operating the lever or levers a tensile or torsional strain
(according to kind of spring or springs used) is set up upon the spring or springs,
which upon the lever or levers being released causes the spring or springs to replace
the key to its original position.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
Apparatus with vertically moving, shut off and opening plug, operated from the
external casing by a lever as described and shown in the annexed drawings.
The 6th day of February 1885.
H. GARDNER,
166, Fleet Street, London,
Agent for the said William Clarence Edwards.