Improvements in Stop-valves for Steam or Liquids.
Year: 1893

page_text: Date of Application, 28th June, 1893
Complete Specification Left, îth Feb., 1894-Accepted, 31st Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in Stop-valves for Steam or Liquids.
RICHARD HOWARD LEAKER Montague Villa, Kingsdown Bristol, Brewers'
Architect and Engineer do hereby declare the nature of this invention to be as
follows:-
This invention consists of improvements in stop valves for steam or liquids, and
in carrying out this invention I construct the body of the valve, which is preferably
of a globular pattern, and provided with the usual screwed or flanged shanks for
connecting to pipes, as follows:-The middle partition which divides the inlet and
outlet portions of the valve body, is formed as a deep stuffing box, and provided
with a gland, and has a recess formed for the reception of the packing of asbestos
or other suitable packing material, which is kept out of contact with the steam or
liquid; through the packing and gland in the mid-partition a valve in the form of
a long parallel cylinder rises, and falls vertically; this cylindrical valve is open at
the lower end and closed at the upper end, and it has its lower portion from the
level of the upper face of the mid partition turned true on the outside, and its
lower edge is faced to form a V joint on a washer flange, or seating of asbestos,
soft metal alloy or any ordinary packing material, which is fitted into a nut
provided, and fixed in the lower part of the valve body. The portion of the
cylindrical valve above the mid partition, or stuffing box, is constructed with a
series of openings or ports for the passage of the steam or liquid through the inside
of the body of the cylindrical valve to the outlet when the valve is raised from its
seating at the lower portion of the body; the cylindrical valve is surmounted with
a screwed spindle working in a cap, with its stuffing nut or head and hand wheel.
This cylindrical valve is free to revolve and also to move vertically in the gland
and mid partition by means of the screw spindle which works in the cap or head.
The lower part of the valve body is fitted with a nut, which is screwed into
the body and the upper face of which is covered with a washer or valve seating
constructed of asbestos, soft metal alloy or other suitable packing material, partly
covered and retained in position by means of a washer plate and screw bolt; the
space between the edge of the plate and the lower part of the valve body is so
constructed as to form a sinking or recess as a seat for the lower end of the
cylindrical valve, which is pressed down upon the seating by the motion of the
screw in closing the valve. To open the valve the hand wheel is turned, and in
so doing the cylindrical valve is raised from its seat at the bottom of the valve
body, permitting the steam or liquid to pass the lower edge of the cylindrical
valve, and ascending through its interior portion it passes to the outlet by the
openings or ports above the mid portion of the valve body. As an alternative,
the cylindrical valve may be constructed so that it may be free to move vertically
only, and be kept from revolving by a stud or pin engaging in a slot in the valve
body or any other usual device; but in that case the screwed spindle is not
attached to the head of the cylindrical valve, but it has its screwed portion
engaged in or fitted to the cylindrical valve to give it the necessary opening and
closing motion.
Dated this Twenty-seventh day of June 1893
RICHARD HOWARD LEAKER,
Montague Villa, Kingsdown, Bristol.

page_text: Improvements in Stop-valves for Steam or Liquids.
RICHARD HOWARD LEAKER Montague Villa Kingsdown Bristol Brewers'
Architect and 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 consists of improvements in stop valves for steam or liquids and
in order that my invention may be properly understood and carried into effect I
will proceed to describe the same by and with the aid of the accompanying
drawing.
Fig. 1. is a sectional elevation through the body A of the valve which is
preferably of a globular pattern and provided with the usual screwed or flanged
shanks for connecting to pipes. The middle partition which divides the inlet and
outlet portions of the valve body is formed as a deep stuffing box B and provided
with a gland B' and has a recess forined for the reception of the packing B³ of
asbestos or other suitable packing material which is kept out of contact with the
steam or liquid. Through the packing and gland in the mid partition a valve C
in the form of a long parallel cylinder rises and falls vertically, this cylindrical
valve is open at the lower end Cf and closed at the upper end C and it has its
lower portion from the level of the upper face of the mid partition B turned true
on the outside & its lower edge C' is faced to form a V joint on a washer flange
or seating of asbestos, soft metal alloy or any other packing material which is
fitted into a nut D provided and fixed in the lower part of the valve body A.
The portion of the cylindrical valve C above the mid partition or stuffing box is
constructed with a series of openings or ports C³ for the passage of the steam or
liquid through the inside of the body of the cylindrical valve C. to the outlet when
the valve is raised from its seating at the lower portion of the body. The
cylindrical valve is surmounted with a screwed spindle C₁ working on a cap E
with its stuffing nut or head E' and hand wheel E. This cylindrical valve is free
to revolve and also to move vertically in the gland and mid-partition by means of
the screw spindle which works in the cap or head. The lower part of the valve
body A is fitted with a nut D which is screwed into the body and the upper face
of which is covered with a washer or valve seating F1 constructed of asbestos,
soft metal alloy or other suitable packing material, partly covered and retained in
position by means of a washer plate and screw bolt 3, the space between the
edge of the plate F and the lower part of the valve body is so constructed as to
form a sinking or recess as a seat for the lower end C' of the cylindrical valve C
which is pressed down upon the seating by the motion of the screw in closing the
valve.
To open the valve the hand wheel is turned and in so doing the cylindrical
valve is raised from its seat at the bottom of the body permitting the steam or
liquid to pass the lower edge of the cylindrical valve and ascending through its
interior portion it passes to the outlet by the openings or ports above the mid
partition of the valve body. As an alternative the cylindrical valve may be free
to move vertically only and kept from revolving by a stud or pin engaging in a
slot in the valve body or any other usual device but in that case the screw spindle
is not attached to the head of the cylindrical valve but has its screwed portion
engaged in or fitted to the cylindrical valve to give the necessary opening and
closing motion.

page_text: 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.
First. The combination of parts constituting a valve consisting of a body or
shell, the inlet and outlet of which is divided by a partition in which is formed a
stuffing box with asbestos or other suitable packing material and through which
works a cylindrical valve open at its lower end and closed at the upper end with
ports or openings above the partition, and actuated by a screw or other suitable
device to give the opening and closing motion, the lower end of the cylindrical
valve being constructed to close upon a seat of asbestos or soft metal alloy,
substantially as herein set forth and described.
Dated this Sixth day of February 1894.
RICHARD HOWARD LEAKER,
Montague Villa, Kingsdown, Bristol.