IMPROVEMENTS IN COCKS FOR CONTROLLING THE DRAWING OFF OF FLUIDS
Year: 1880

page_text: LETTERS PATENT to Thomas John Easey, of 38, High Street, Stepney, in the
County of Middlesex, for an Invention of "IMPROVEMENTS IN COCKS FOR
CONTROLLING THE DRAWING OFF OF FLUIDS."
PROVISIONAL SPECIFICATION left by the said Thomas John Easy at the
Office of the Commissioners of Patents on the 9th October 1880.
THOMAS JOHN EASEY, of 38, High Street, Stepney, in the County of Middlesex.
"IMPROVEMENTS IN COCKS FOR CONTROLLING THE DRAWING OFF OF FLUIDS."
This Invention has for its object improvements in cocks for controlling the
drawing off of fluids, and the improvements relate to that class of cocks in which
a glass or other sphere is held by the pressure of the fluid up to and against a ring
of elastic material held in a recess in the body of the cock. I form the body of the
cock in such manner that the sphere tends by its own weight to fall on to and
rest upon the ring, as well as being held down on to the ring by the pressure of
the fluid. In order to be able to raise the sphere when fluid is to be drawn off I
cut a screw thread in the interior of the descending outlet passage of the cock;
into this screw thread I screw a tube which is open at both ends. The lower end
of the tube projects below the bottom of the outlet passage of the cock, and has an
enlargement upon it by which it can be turned.
When the tube is turned by the enlargement in its lower end so as to screw the
tube inwards, the upper end of the tube comes against the ball and lifts it from its
seat.
In the upper end of the tube notches are made, so that when the ball is raised
fluid passing the ball can enter the tube and escape from its lower end.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas John Easey in the Great Seal Patent Office on the 9th
April 1881.
THOMAS JOHN EASEY, of 38, High Street, Stepney, in the County of Middlesex.
"IMPROVEMENTS IN COCKS FOR CONTROLLING THE DRAWING OFF OF FLUIDS."
This Invention bas for its object improvements in cocks for controlling the
drawing off of fluids, and the improvements relate to that class of cocks in which a
glass or other sphere is held by the pressure of the fluid up to and against a ring
of elastic material held in a recess in the body of the cock. I form the body of the
cock in such manner that the sphere tends by its own weight to fall onto and rest
upon the ring, as well as being held down on to the ring by the pressure of the
fluid. In order to be able to raise the sphere when fluid is to be drawn off I cut
a screw thread in the interior of the descending outlet passage of the cock; into
this screw thread I screw a tube which is open at both ends. The lower end of the
tube projects below the bottom of the outlet passage of the cock, and has an
enlargement upon it by which it can be turned.
When the tube is turned by the enlargement in its lower end, so as to screw
the tube inwards, the upper end of the tube comes against the ball and lifts it from
its seat.
In the upper end of the tube notches are made, so that when the ball is raised
fluid passing the ball can enter the tube and escape from its lower end.
In place of a screw thread being cut upon this notched tube, so that by turning
the tube it may be moved towards or from the ball, other means may be
adopted for giving to the tube an endway to and fro movement to open and close
the cock.
In the Drawing hereunto annexed I have shewn various forms of cocks
constructed according to my Invention.
Figure 1 is an elevation, and Figure 2 a longitudinal section of a cock constructed
as above described; A is a metal chamber formed in two parts, screwed together
as shewn. The upper part is formed in any suitable manner for being connected
to a fluid supply tube or passage. The lower part has a central outlet passage B
descending from it, of smaller internal diameter than the interior of the lower part
of the chamber A, so that a ledge or shoulder is formed at the bottom of the
chamber A all around the outlet passage. On to this ledge or shoulder is placed
a ring C of vulcanized india rubber; D is a glass ball resting on the ring C and
closing the passage through it. In the interior of the outlet B a screw thread is
cut, into which is screwed a tube E which has a screw thread cut on its exterior.
The top of the tube is notched or cut away at parts, as shewn.
On the lower end
of the tube is an enlargement F by which it can be turned.
At Figures 3 and 4 I have shewn a modification of the cock, in which the tube E
can be moved end wise towards the glass ball D simply by pressing upon its end
with the finger; in this case the tube may advantageously be made with a side
outlet, as shewn.
Figures 5 and 6 shew another modification of the cock, in which the tube E can
be moved inwards towards the glass ball D by means of a lever G.
Figures 7 and 8 shew another modification, in which the tube E has a stud H
projecting from it into a spiral slot cut through the side of the outlet passage B.
In this case the exterior of the outlet passage B may be surrounded by a thin tube
or casing I. This casing may have a circular hole through its side, which hole can
by turning the casing be brought over the stud H, so that the stud H may then
be screwed into or unscrewed from the tube E. The lower part of the tube E is
formed with arms projecting from it by which it may be turned, as shewn.
4
A

page_text: It is not essential in the above described taps that they should be placed
vertically, so that the ball should drop by its own weight on to its seat. In most
cases when they are used for controlling the flow of water under pressure the
pressure of the water will be sufficient to hold the ball up to and against the
elastic ring C; Figure 9 shews a modification of the tap shewn at Figures 7 and 8;
in this case the body of the cock is intended to be placed horizontally, and the
outlet passage B is bent downwards so as to direct fluid passing from it in a
downward direction. The stud H is also enlarged, so that it forms a lever handle
by which the tube E can be turned. When the ball is to move to and fro hori-
zontally, as in this case, the interior of the chamber A should be but little larger
in diameter than the glass ball, and grooves should be formed along its inner sides
so that water may pass the ball when it is pushed back from its seat.
One advantage derived from making cocks in any of the ways above described
is, that if after a time the elastic ring or seat C should perish and become defective
it is only necessary to unscrew the one part of the chamber A from the other, and
to take away the defective ring or seating and insert a fresh one in its place, the
cock would then be in as good a working condition as when first made.
Having thus described the nature of my Invention, and the manner of performing
I would have it understood that I claim,-
the same,
First. The construction of cocks in the ways substantially as herein before
described and shewn in the Drawings annexed.
Second. In combination with that class of cocks in which the waterway through
the cock is closed by a glass ball or other sphere held by the pressure of the fluid
up to and against an elastic ring, I claim the employment of a tube fitting fluid
tight or approximately so within the outlet of the cock, and capable of being
moved towards or away from the ball valve, such tube being notched or cut away
in parts at its inner end, so that when the tube is pressed inwards and its end
forces the ball away from its elastic seat fluid passing the ball may enter the tube
and flow away through it.
In witness whereof, I, the said Thomas John Easey, have hereunto set my
hand and seal, this Ninth day of April, in the year of our Lord One
thousand eight hundred and eighty one.
THOS J. EASEY. (L.S.)