Improvements in Valves.
Year: 1892

page_text: Date of Application, 18th July, 1892
Complete Specification Left, 14th Apr., 1893-Accepted, 20th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Valves.
We, EDWIN JAMES PRESTON of the firm of J. Stone & Co. of Deptford in
the County of Kent and FREDERIC GEORGE SISON HAM, in the employ of
the said firm, Engineers do hereby declare the nature of this invention to be as
follows:-
Heretofore outlet valves for water and other fluids under pressure have generally
been made with stuffing box or cup leather for the valve spindle to pass through
fluid tight. Now according to our invention we obviate the use of such stuffing
box or the like and cheapen and simplify the construction of such valves. For
this purpose we provide in the body or casting a diaphragm or partition through
which the spindle passes and which also serves as a guide for it. This diaphragm
or partition does not reach right across to the outlet side but so as to leave a narrow
slit which communicates with a space behind the said diaphragm or between it and
the bottom of the screw thread in the body of the valve casting or in a cap thereon.
Instead of the slit we may provide one or more small holes. The effect of this
arrangement is that the rush of water or other fluid in passing the narrow slit on
its way to the outlet produces what is called an induced current or partial vacuum
in the space behind the diaphragm and so that the water will not rush up there or
find its way out through the screw threads, but rather that a little air will be
drawn in through them and pass off by the outlet.
This invention is of special use in draw off, straight through and other valves
with bib outlet shank, ball cocks or valves, self closing valves, safety valves and
other valves for hot or cold fluids. As applied to a high pressure loose valve cock
such as is frequently used for lavatories with horizontally placed screw spindle the
latter is screwed through the body of the casting and the aforesaid diaphragm is
arranged a short distance from the said screwed part and provided with a slit or
hole or holes as described and formed with a central hole for the plain end part of
the valve spindle to pass through with a good fit; the stuffing box and cap are
omitted,
Dated this 18th day of L.... 100.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Valves.
We EDWIN JAMES PRESTOx of the firm of J. Stone & Co. of Deptford in the
County of Kent and FREDERIC GEORGE SISON HAM in the employ of the said
firm, Engineers, 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:-
Heretofore outlet valves for water and other fluids under pressure have generally
been made with stuffing box or cup leather for the valve spindle to pass through
fluid tight. Now according to our invention we obviate the use of such stuffing
box or the like and cheapen and simplify the construction of such valves. For
this purpose we provide in the body or casting a diaphragm or partition through
which the spindle passes and which also serves as a guide for it. This diaphragm
or partition does not reach right across to the outlet side but so as to leave a
narrow slit which communicates with a space behind the said diaphragm or between

page_text: it and the bottom of the screw thread in the body of the valve casting or in a cap
thereon. Instead of the slit we may provide one or more small holes. The effect.
of this arrangement is that the rush of water or other fluid in passing the narrow
slit on its way to the outlet produces what is called an induced current or partial
vacuum in the space behind the diaphragm and so that the water will not rush up
there or find its way out through the screw threads, but rather that a little air will
be drawn in through them and pass off by the outlet.
This invention is of special use in draw off, straight through and other valves
with bib outlet shank, ball cocks or valves, self closing valves, safety valves and
other valves for hot or cold fluids. As applied to a high pressure loose valve cock
such as is frequently used for lavatories with horizontally placed screw spindle the
latter is screwed through the body of the casting and the aforesaid diaphragm is
arranged a short distance from the said screwed part and provided with a slit or
hole or holes as described and formed with a central hole for the plain end part of
the valve spindle to pass through with a good fit; the stuffing box and cap are
omitted.
Figure 1 of the accompanying drawing is a vertical longitudinal section of a
high pressure loose valve cock of this description, and Figure 2 a similar view of a
slightly modified form of same.
The screw spindle is at A. Fig. 1 screwed through the body B of the casting and
passes at A through the diaphragm B' between which latter and the inner part of
the body there is a slit or narrow space C. The stem of the loose" valve D is
attached to the spindle in the usual manner. In order to fit the parts together the
spindle without the valve D on is screwed into the body B the guide gland E
having first been placed on the spindle and the crutch A pinned on to the spindle.
The valve D can then be put on, a hole B2 being provided in the body B for
inserting a screw driver. The screw socket or nipple can then be screwed on.
In Figure 2 the spindle with the valve D is screwed in from the inlet end of
the body B, the part A' being made larger than that it can pass through the
screw thread in the body B. The socket or nipple E is then screwed on and the
crutch A pinned on.
When the cock is opened the rush of water past the slit C induces a partial
vacuum behind it, so that the uced for a stuffing box for the spindle is obviated.
The spindle is at the same time well guided both in the gland E and the
diaphragm B'.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
:~
1. Constructing outlet valves or cocks with a diaphragm a short distance from
that part of the body or casting where the valve spindle enters the interior of the
same and with a narrow slit or opening between that part and the diaphragm in
which latter the spindle also is guided, so that the rush of water from the inlet to
the outlet past the slit induces a partial vacuum behind the same, thus obviating
the use of a stuffing box or the like for the spindle, substantially as set forth.
2. The constructions of high pressure loose valve cocks of the character firstly
claimed substantially as described with reference to the drawings.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.