IMPROVEMENTS IN VALVES
Year: 1881

page_text: LETTERS PATENT to Alfred Edwin Carter, of Kensington Place, in the
County of Middlesex, and David Young, of 23, Southampton Buildings, in
the County of Middlesex, for an Invention of "IMPROVEMENTS IN VALVES
PROVISIONAL SPECIFICATION left by the said Alfred Edwin Carter and
David Young at the Office of the Commissioners of Patents on the 28th July
1881.
•
ALFRED EDWIN CARTER, of Kensington Place, in the County of Middlesex, and
DAVID YOUNG, of 23, Southampton Buildings, in the County of Middlesex.
IMPROVEMENTS IN VALVES FOR REGULATING AND CONTROLLING THE FLOW OF
16
FLUIDS."
Our Invention relates to that class of valves known as screw-down valves" for
either hot or cold water, steam, or other fluids. Its object is to so construct such
valves that there shall be no leakage, and that the packing may be subjected to
the pressure of the fluid only during the operations of opening and closing the
valve, and so that the packing may be renewed while the valve is under pressure,
and in some cases to so construct such valves that they shall not require any
packing.
The first part of our Invention applies to valves used for either high or low
pressures, and consists in making the valve to screw into or onto a loose bush
inserted in the valve box, and prevented from turning round by means of feathers
fitting into slots in the valve box, or by other suitable means. The spindle, which
has a square end fitting into the valve, is provided with a double cone or a
spherical collar, one side of which fits into a seating in the said bush, and the
other side into a seating in a cap screwed into or otherwise fixed to the valve box.
This cap is made with an ordinary stuffing box and screw gland or nut for packing.
When the valve is closed the loose bush is thrust against the double cone on the
spindle, thereby pressing it against the seating in the cap and closing the stuffing
box, so that the packing is not subjected to the pressure of the fluid. On opening
Paving G71

page_text: the valve to its full extent it presses against the end of the spindle, and again
brings the double cone against the seating in the cap.
The second part of our Invention applies to valves used for either high or low
pressures, and consists in making the valve to screw into the valve box, a second
valve being screwed into the main valve, one of the screws being right handed
and the other left handed. The main valve fits into a seating in the valve box in
the ordinary way; the second valve fits into a seating in a cap screwed into or
otherwise fixed to the valve box. This cap is made with an ordinary stuffing box
and screw gland or nut for packing. The spindle, which has a square end fitting
into the second valve, is provided with a collar, which may be made to fit into a
seating in the stuffing box if desired. When the main valve is closed the second
valve, which is thrust up, closes the stuffing box, so that the packing is not
subjected to the pressure of the fluid. On opening the main valve to its full
extent the stuffing box is again closed by the second valve.
Instead of the arrangement just described the valve may be made to screw into
the valve box and the spindle to screw into the valve, one of the screws being
right handed and the other left handed, in which case the second valve is dispensed
with, and the spindle is provided with a single cone, which fits into a seating in
the cap before described..
The third part of our Invention applies to valves used for low pressures, and
consists in making the valve to screw into the valve box, and to fit into a seating
in the valve box in the ordinary way. The spindle, which has a square end
fitting into the valve, is provided with a double cone or a spherical collar, one side
of which fits into a seating in the valve box, or in a cap screwed into or otherwise
fixed to the valve box; a loose collar is placed on the spindle, so as to rest against
the other side of the double cone or spherical collar; a ring of india rubber or other
clastic material or a suitable spring is then placed on the spindle, and is pressed
against the loose collar by means of a screw gland or nut.
The double cone or
spherical collar is thus kept against the seating in the valve box or in the said cap,
and prevents the escape of the fluid around the spindle.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Alfred Edwin Carter and David Young in the Great Seal Patent
Office on the 28th January 1882.
ALFRED EDWIN CARTER, of Kensington Place, in the County of Middlesex, and
DAVID YOUNG, of 23, Southampton Buildings, in the County of Middlesex.
"IMPROVEMENTS IN VALVES FOR REGULATING AND CONTROLLING THE FLOW OF
FLUIDS."
Our Invention relates to that class of valves known as "screw down valves" for
either hot or cold water, steam, or other fluids. Its object to so construct such
valves that the packing shall be subjected to the pressure of the fluid only during
the operation of opening and closing the valve, and so that the packing may be
renewed while the valve is under pressure, and in some cases to so construct such
valves that they shall not require any packing.
The first part of our Invention applies to valves used for either high or low
pressures, and is represented in Figure 1 of the accompanying Drawings. A is the
valve, which screws on to (or it may screw into) a loose bush B inserted in the
valve box C, and prevented from turning round by means of feathers B', B2, which
fit into slots in the valve box, or by other well known and suitable means. The
spindle D, which has a square end D' fitting into the valve for the purpose of
opening and closing it, is provided with a conical or other suitably shaped collar E,
one side of which fits and is ground into a seating in the cap F screwed into.or
otherwise attached to the valve box, the other side being acted upon by the loose
bush B.. The cap F is made with an ordinary stuffing box G with screw gland or
mut for packing. When the valve A is closed the loose bush B is thrust against
the collar E, thereby pressing the said collar against the seating in the cap F and
closing the stuffing box, so that the packing is not subjected to the pressure of the
fluid. On opening the valve A to its full extent it presses against the end of the
spindle D; and again brings the collar E on to the seating in the cap F.
The second part of our Invention applies to valves used for either high or low
pressures. Figures 2, 3, and 4 represent different methods of carrying out this
part of our said. Invention, the essential feature of which consists in the use of
right and left handed screws for effecting the closing of the stuffing 50x.
In Figure 2 the valve A screws into the valve box C, and a second valve H
screws into the main valve A, one of the screws being right handed and the other
left handed. The main valve A fits into a seating in the valve box in the ordinary
way. The second valve H fits into a seating in the cap F screwed into or other-
wise attached to the valve box. This cap is made with an ordinary stuffing box G
with screw gland or nut for packing. The spindle D, which has a square end D
fitting into the second valve H, is provided with a conical or other suitably shaped
collar I, which fits into a seating in the stuffing box G, a loose collar G¹ being
placed over it before the packing is inserted. When the valve A is closed the
second valve H is forced against the seating in the cap F and closes the stuffing
box G, so that the packing is not subjected to the pressure of the fluid. On
opening the main valve to its full extent the stuffing box is again closed by the
second valve H.
Figure 3 shows a more simple method of carrying out this part of our Invention,
and Figure 4 shows it applied to a diaphragm valve. In Figure 3 the valve A
screws into the valve box C, and the spindle D screws into the valve A, one of
the screws being right handed and the other left handed. The spindle D is
provided with a conical or other suitably shaped collar E fitting into a seating in
the cap F. This cap is made with an ordinary stuffing box G, and is screwed into

page_text: or otherwise attached to the valve box. In Figure 4 the valve A is provided with
a spindle J, which screws into a nut K. This nut is screwed into or otherwise
attached to the valve box C. The spindle D screws into the valve A, and is
provided with a collar E fitting into a seating in the cap F. When the valve A
is closed, or when it is opened to its full extent, the collar E is pressed against the
seating in cap F and closes the stuffing box, so that the packing is not subjected to
the pressure of the fluid...
The third part of our Invention applies to valves used for low pressures, and is
represented in Figures 5 and 6, Figure 5 showing a valve closing with the pressure,
and Figure 6 showing a valve closing against the pressure of the fluid. The
valve A screws into the valve box C, and is made to fit into or on to a seating in
any well known and suitable manner: The spindle D, which has a square end D
fitting into the valve for the purpose of opening and closing it, is provided with a
conical or other suitably shaped collar I fitting into a seating in.the cap L, which.
is screwed into or otherwise attached to the valve box. Two loose collars M, M¹,,
are placed upon the spindle D with a ring N of india rubber, cork, or other elastic
material between them. These are pressed against the collar I by means of the
nut O, and the collar is thereby kept upon its seating in the cap L, and prevents the
escape of the fluid around the spindle D, thus obviating the necessity for packing.
We do not limit ourselves to any particular method of fitting the valve. A into
or onto its seating in the valve box. In Figures 1 to 5 it is shown of metal
ground into a metal seating; in Figure 6 it is shown with a disc of india rubber
or leather attached to it by means of a screw; and fitting on to a flat metal seating.
Figure 7 shows the valve A made in the form of a socket with a core of soft metal
run into it, and fitting onto a flat metal seating; in Figure 8 it is shown formed...
entirely of a soft metal, and fitting into a metal seating: but the seating of the
valve may be effected with lead, vulcanite, fibrous, or other suitable material.
Having now described the nature and object of our Invention, and in what,
manner the same may be carried into practical effect, we wish it understood that
what we claim is,-
First. A valve for regulating and controlling the flow of fluids in which a collar
upon the spindle or a second valve is used to close the stuffing box, so that the
packing is not subjected to the pressure of the fluid when the valve is closed, nor
when it is opened to its full extent, substantially as hereinbefore described and
shown in the Drawings hereunto annexed.
་
Second. The use of the right and left handed screws in combination with the
said collar or second valve, and shown in Figures 2, 3, and 4..
Third. A valve for regulating and controlling, the flow of fluids in which a
seating in a cap screwed into or otherwise fixed to the valve box by means of a
nut screwed down upon loose collars, having a ring of elastic material between
them, substantially as hereinbefore.described.and.shown-in-Figures-5-and-6
Fourth. The use of the loose bush in combination with the collar upon the
spindle, substantially as herein before described and shown in Figure 1.
In witness whereof, I, the said David Young, on behalf of myself and the
said Alfred Edwin Carter, have hereunto set my hand and seal, this
Twenty eighth day of January, in the year of our Lord One thousand eight
hundred and eighty two.
DAVID YOUNG. (L.S.)