Improvements in Stop Valves.
Year: 1896

page_text: Date of Application, 18th Mar., 1896
Complete Specification Left, 18th Dec., 1896-Accepted, 27th Feb., 1897
Improvements in Stop Valves.
I, FREDERICK NOEL MACKAY, of 4 Nicoll Road, Willesden, in the County
of Middlesex, Engineer, do hereby declare the nature of this invention to be as
follows:-
required.
This invention relates to stop valves chiefly intended for use in connection with
apparatus or plant where gas or volatile liquids under high pressures have to
be dealt with, but applicable also for use in connection with high pressure or
other vapors or
liquids and generally for all purposes where a stop valve is
The said invention has for two of its chief objects the provision of a stop valve
of simple and efficient construction, that can be always shut down perfectly tight
even should the seat or valve face be worn by grit or other matter or otherwise
damaged, and the provision of means for protecting the faces of the valve and seat
from wear caused by the flow of fluid past them when the valve is open.
Other objects are the provision of means for adjusting with accuracy and
certainty the opening of the valve from the position when the valve just begins to
open to such point at which the thoroughfare between the valve and seat is full
open, and means whereby the pressure is relieved from the packing around the
valve spindle when the valve is fully opened or fully closed.
By my said invention I also provide a stop valve in which the seat and valve
are made of different materials or substances and are readily removable for
inspection and repair without necessitating the disconnection of the valve body
from the vessel or pipe to which it may be attached. I moreover provide in
combination with other features peculiar to my invention. means for ensuring that
the valve and seat shall be perfectly true with each other, and for allowing the
valve spindle to rotate when screwing the valve home while the valve remains
stationary against its seat, and for providing against the possibility of any of the
internal parts of the valve becoming detached when in use; I also provide in
combination with other features above referred to means for making a double
ported valve in one valve body, and means whereby the valve or seat or both can
be taken apart from the valve body or casing either with the lid or cover or
independently thereof.
According to one form of my invention as applied to the ordinary globe valves.
I make the valve seat integral with a plug which is removably secured to the
casing by screwing or otherwise and jointed thereto by a soft metal or other
joint in combination with a cap or cover. I make the joint between the seat and
the body of the valve by preference of a soft metal, but any other suitable
jointing material can be employed. The scat can be removed without disturbing
the stuffing-box or cover portion of the valve body.
In another modification of globe valve, the seat, stuffing-box and cover are
formed in one piece which is removably secured to the valve casing. In this
valve, the seat with the valve pressed against it is detachable from the valve body
for inspection and repairs. When so removed the valve can be tested under
pressure in precisely the same condition as when working and any faults in the
valve can be at once seen and remedied.

page_text: In another modification applied to angle stop valves I provide one inlet and
two outlet thoroughfares and 1 arrange the valve in such a manner that all the
thoroughfares are open together or one of the outlets is closed while the other
is open. I sometimes construct this form of valve with two inlet thoroughfares
and one outlet. In this instance either of the inlets can be opened and the other
closed, or both can be open together.
In another modified form of valve I make the passages at the ends of the valve
body as in ordinary globe valves, terminating in either flanges or screwed ends,
and I arrange the seat at the side of the valve body and by preference at right
angles to the end flanges and cast in one with the body. The passages open out
at the side of the valve body into a chamber or cavity formed in the cover which
contains the valve and guide, and the stuffing-box, and spindle all removable
together from the valve casing. The valve in some instances is constructed to
close only the inlet passage. In other instances it closes both inlet and outlet
passage in such a manner that when the valve is shut down the stuffing-box is
entirely relieved of all pressure.
In some instances I make the stuffing-box part of the valve body and not
detachable therefrom, and in such cases I allow of the detachment of the valve
from its seat by removing a screwed plug from the bottom of the stuffing-box.
Small angle valves I construct in like manner. I also provide angle stop valves
with a separate stuffing-box. piece, secured to the valve by screwing or bolting.
The valve spindle is also screwed into the valve body.
.1 make renewable seats to angle and globe or like stop valves by means of a
metal tube, either with or without side ports according to the type of valve and
securing the end of the tube to the valve body by screwing or bolting in such
a manner that the joint when the valve is in place covers the end of the tube, or
in the case of the same being screwed into the valve body I solder the end so
ensuring a tight joint.
I make a renewable valve face by encasing the bearing surface with any suitable
material, such as hard lead-solder, copper or brass, rubber or like substance, in
such a manner that the said substance forms a part of the valve proper and is
not simply attached to it as has been the common practice heretofore.
I some-
times support the valve in an enlarged part of the spindle in such a manner that
the spindle can rotate while the valve is held fast to its seat when being screwed
home. For example I secure the valve to the spindle either by one or more pins
passed through the end of the spindle and working in an annular recess formed in
the side of the valve, or I insert through an opening made in the valve spindle a
number of metal balls which by partly filling the recess, secure the valve to the
spindle and at same time allow it to rotate on the spindle. The opening is closed.
after the balls are inserted. In some instances I provide the valve with a rim.
that encloses the projecting seat and ensures that on the valve being opened the
valve face will be moved a considerable distance from its seat before the edge of
the rim will have passed the top edge of the seat, so preventing wear of the
substance forming the face of the valve, and providing means of minute adjustment
in opening or closing the valve.
. I sometimes for the same object provide a projecting spindle entering the
valve passage instead of or in conjunction with the overlapping rim on the
valve.
. In certain forms of my invention the enlarged part of the valve spindle that.
retains the valve in position is provided with a packing ring between it and the
bottom of the stuffing-box in such a manner that by screwing the valve spindle
hard against it when the valve is fully open the stuffing-box is shut off from all
pressure from the inside of the valve casing..
D
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: I, FREDERICK NOEL MACKAY, of 4 Nicoll Road, Willesden, in the County
of Middlesex, 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 :-
This invention relates to stop valves chiefly intended for use in connection
with apparatus or plant where gas or volatile liquids under high pressures have
to be dealt with, but the said valves are also generally applicable for all purposes
where a stop valve is required.
My invention has for its chief objects the provision of a stop valve of simple
and efficient construction, that can be always shut down perfectly tight even
should the seat or valve face be worn by grit or other matter or be otherwise
damaged, and the provision of means for protecting the faces of the valve and
seat from wear due to the flow of fluid past them when the valve is open, and for
adjusting with accuracy and certainty the opening of the valve from the position
when the valve just begins to open to such point at which the thoroughfare
between the valve and seat is fully open. Another important object of my inven-
tion is the provision of means whereby the pressure is relieved from the packing
around the valve spindle when the valve is fully open or fully closed.
By my said invention I provide a stop valve in which the seat and valve proper
are made of different materials or substances and are readily removable for
inspection and repair without necessitating the disconnection of the valve body
from the vessel or pipe to which it may be attached. Moreover in combination
with other features peculiar to my invention I provide for ensuring that the
valve and seat shall be perfectly true with each other, also for allowing the
valve spindle to rotate when screwing the valve home while the valve remains
stationary against its seat, and for preventing the possibility of any of the
internal parts of the valve becoming detached when in use; I also provide in
combination with the aforesaid features a double ported valve in one valve
body, and a valve or valve seat or both which is or are removable from the
valve body or casing either with the lid or cover or independently thereof.
Referring to the accompanying drawings,
Figure 1 is a sectional side elevation of a globe valve constructed according to
my invention.
Figure 2 is a similar view illustrating a modification thereof.
Figure 3 is a sectional elevation of an angle stop valve having my improvements
applied thereto.
Figures 4 to 8 are similar views of other valves constructed according to my
invention.
Figures 3 and 7 are drawn to a larger scale than the other figures.
Like letters of reference denote corresponding parts in the several figures.
A is the valve body or casing; B is the valve proper; C is the valve seat.
Referring now to Figure 1, I make the valve seat C integral with a plug D
which is removably secured to the casing by screwing or otherwise. D¹ is a cap
or cover for closing the hole into which the plug D is screwed. A secure joint is
made between the cap D' and the casing by a soft metal or other jointing ring.
I make the joint between the seat C and the diaphragm A' of the valve body by
preference with soft metal a, but any other suitable jointing material may be
employed. It will be obvious that the seat can be removed without disturbing the
stuffing-box E, the cover F or the valve and valve spindle.

page_text: In the modified globe valve shown in Figure 2, the seat C, stuffing-box E and
cover F are formed in one piece which is removably secured to the valve casing,
and the seat and valve are together detachable from the valve body for inspection
and repair and can be so detached while the valve remains pressed against its
seat. It will be seen therefore that when the valve and seat are removed from
the body or casing the valve can be tested under pressure in precisely the same
condition as when working in the casing and any faults in the valve can be at
once located and remedied. The fluid enters by the inlet thoroughfare G and
when the valve is open passes into the space J and thence by a port or passage J
to the outlet thoroughfare H. a, is a jointing ring of lead wire, or other soft
metal.
In another modification applied to angle stop valves as shewn in Figure 3
I provide one inlet thoroughfare G and two outlet thoroughfares H, H' and
1 arrange the valve in such a manner that all the thoroughfares are open together
or one of the outlets is closed while the other is open. The upper part of the
valve is somewhat similar to that described with reference to Figure 2 but an
additional outlet is provided at the bottom of the casing directly beneath the valve
and a second valve face is provided to close the lower outlet when the valve
spindle is screwed down, the upper outlet being closed when the valve is screwed
up. a² a² are guides cast in one with the casing and bearing against the valve for
the purpose of affording lateral support to the valve. In some instances the
guides are formed on the valve to bear against the casing. The lower valve seat
is renewable as hereinafter described. I sometimes construct this form of valve
with two inlet thoroughfares and one outlet in which case either of the inlets can
be opened and the other closed, or both can be open together. Upon the removal
of the cover F, the valve and the upper seat e can be withdrawn for inspection or
repair.
In another modified form of valve I make the passages at the ends of the valve
body similar to those in ordinary globe valves, terminating in either flanged or
screwed ends, but I arrange the valve seat at the side of the body or casing and
by preference at right angles to the end flanges and cast in one with the body.
Such a valve with flanged ends is shown in Figure 4. The passages G, H pass
out at the side of the valve body into a chamber or cavity K formed in the
cover F which contains the valve and guide, the stuffing-box and valve spindle,
all removable together from the valve casing. The valve spindle is formed with
an enlarged head L screw threaded externally to screw into the cover F and
adapted to receive within it the valve B, which is supported in such a manner that
the spindle can rotate while the valve is held fast to its seat when being screwed
home. For example I support the valve in the head L either by one or more
pins b¹, b¹ made fast in the spindle and projecting in an annular recess formed in
the side of the valve, so as to retain the valve in place while allowing it to rotate,
or I insert through an opening made in the valve spindle a number of balls which
by partly filling the said annular recess retain the valve in the head L and at
same time allow it to rotate in the said head. The said opening is suitably closed
after the balls are inserted. The pins when such are used are prevented from
displacement by the cover or casing in which the spindle is screwed. The valve
is shown constructed to close only the inlet passage. It may however be
constructed to close both the inlet and the outlet passage as shown in Figure 5 so
that when the valve is shut down the stuffing-box is entirely relieved from
pressure. The said Figure 5 shows an angle valve one thoroughfare of which
communicates with an annular passage O, which is concentric with the other
thoroughfare, and both passages open into the cavity K in the cover.
The
stuffing-box may sometimes be a separate piece secured to the valve body' by
screwing or bolting.
Figure 6 shows a modified form of the valve illustrated in Figure 5, the same
being provided with a renewable seat as hereinafter described.
In some instances I make the stuffing-box integral with the casing as shown for

page_text: example in Figures 7 and 8 and in such instances a removable screwed plug P is.
provided in the bottom of the stuffing-box. Upon the removal of the said plug
the valve can be taken out. The enlarged part of the valve spindle is screwed into
the casing.
By my invention I provide renewable seat rings for angle and globe or like
stop valves the said seat rings consisting of a metal tube C' Figures 3, 6 and 7,
secured to the valve body by screwing or otherwise in such a manner that when:
the valve body is in place, the joint covers the end of the tube. When the tube
is screwed into the valve body I sometimes solder the end so as to ensure a
joint.
tight!
I make the valve proper of iron or other hard metal encased with a softer
material, such as hard lead-solder, copper or brass, india rubber or like substance
The said encasing material is applied by soldering or casting or fixing to the
valve as shown in Figure 7 for example in such a manner that the said substance
is not simply attached to the valve as has been done heretofore, but forms a part.
of the valve. -
In Figure 7 I have shown a conical valve in section having a soft metal
facing cast or soldered on it. In order to firmly retain the facing in position.
I form a transverse hole through the valve which hole is filled with soft metal.
that unites the two sides of the facing and forms.a key. My improved renewable
valve seat allows of the valve being shut down quite tight even when the face is.
worn somewhat, and also admits of easy repair.
For protecting the valve and seat faces I provide the valve with a rim b see
Figures 2 to 7 that surrounds the projecting valve seat, a very small annular:
space being left between the said rim and the seat. On the valve being opened it.
must be moved a considerable distance from its seat before the edge of the rim b
will have cleared the top edge of the seat, and the annular area between the rim
and seat being very small it is obvious that there will not be any violent rush of
fluid past the seat and valve faces until the latter are separated a considerable
distance and hence the wear of the faces of the valve and seat is prevented.
Moreover the rim provides a means of minute adjustment in opening or closing the
valve. I sometimes for the same purpose provide a projecting spindle entering
and nearly fitting the valve passage instead of or in conjunction with the
overlapping rim ou the valve.
In certain forms of my invention the enlarged part of the valve spindle in
which the valve is received is provided with a packing ring N see Figures 4 to 8.
which ring forms a joint against the upper end of the valve cavity when the
valve spindle is screwed out as far as it will go so that when the valve is fully
open the stuffing-box is shut off from all pressure from the inside of the valve
casing.
The valves shown in Figures 7 and 8 are of the conical type.
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 :-
1. A valve furnished with a yielding renewable face as hereindescribed, and for
the purposes specified.
2. The valve constructed with a rim adapted to surround the projecting valve
seat, or with a spindle entering the seat, or with both, substantially as, and for the
purposes, specified.
3. The means for relieving the stuffing-box from pressure when the valve is.
fully open, substantially as described.
4. The valve spindle constructed with an enlargement at the inner end screwed
in the valve casing or cover and adapted to receive the valve, substantially as, and
for the purposes, described.
5. Connecting the valve to the spindle by means of balls that allow of the
rotation of the valve relatively to the spindle, substantially as described.

page_text: 6. The renewable valve seat connected to the valve casing and removable from
the casing, substantially as described.
7. Constructing the valve seat integrally with the cover, so that the cover the
valve seat and valve may be removed from the casing while the valve is pressed
against its seat, substantially as, and for the purposes, specified.
8. A stop valve constructed with the valve seat at the side of the casing, and
arranged so that both the inlet and outlet passages are closed by the valve,
substantially as, and for the purposes, described.
9. A stop valve constructed substantially as described with reference to one or
other of the forms described with reference to the accompanying drawings.
Dated this 18th day of December 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.