IMPROVEMENTS IN STOP OR REGULATING VALVES FOR REGU- LATING OR CONTROLLING THE PASSAGE OF LIQUIDS AND GASES THROUGH PIPES AB THRES AND FOR OTHER LIKE PURPOSES
Year: 1874

page_text: LETTERS PATENT to William Henry Westwood, and Edward Wright,
and Edward Thomas Wright, all of Dudley, in the County of
Worcester, Boiler and Gas Holder Makers and Engineers, for the
Invention of "IMPROVEMENTS IN STOP OR REGULATING VALVES FOR REGU-
LATING OR CONTROLLING THE PASSAGE OF LIQUIDS AND GASES THROUGH PIPES
AB THRES
AND FOR OTHER LIKE PURPOSES.”
Sealed the 19th March 1875, and dated the 30th September 1874.
PROVISIONAL SPECIFICATION left by the said William Henry
Westwood, Edward Wright, and Edward Thomas Wright at the
Office of the Commissioners of Patents, with their Petition, on the
30th September 1874.
We, WILLIAM HENRY WESTWOOD, and EDWARD WRIGHT, and
EDWARD THOMAS WRIGHT, all of Dudley, in the County of Worcester,
Boiler and Gas Holder Makers and Engineers, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN STOP OR REGULATING

page_text: VALVES FOR REGULATING OR CONTROLLING THE PASSAGE OF LIQUIDS AND GASES
THROUGH PIPES OR TUBES, AND FOR OTHER LIKE PURPOSES," to be as follows:-
Our improvements relate to those kinds of stop or regulating valves
in which a valve in the form of a disc is employed, the valve box being
made in halves and bolted together by their flanged faces, one half of t
the said valve box carrying the valve seat. The disc valve and the face
or seat of the valve box against which the said valve works are per-
forated with radial openings. By turning the disc valve so that its
openings coincide with those in the valve seat the valve is opened, and
by turning the valve so that its openings are presented to an unperforated
part of the valve seat the valve is closed. The disc valve is partly
rotated for opening and closing the valve by a toothed quadrant or
portion of a worm wheel on the periphery of the disc, with which a
worm or tangent screw gears. In the said valves as ordinarily con-
structed the valve and the gearing for working it cannot be removed 1
from the valve box without separating the halves of the valve box.
Our improvements in the said valve consist in so constructing the
valve box that the removal and replacement of the disc valve and worm
or tangent screw or other gearing of the said disc valve may be effected
with great facility, and the lubrication and cleaning of the valve and 2
gearing also effected with great facility.
Our improvements also consist of the mechanism herein-after described
for opening and closing the disc valve.
According to our Invention we make at the top of that half of the
valve box in which the disc valve works a small rectangular chamber. 2
In this chamber the gearing for partly rotating the disc valve is
situated and works. The top of the said gear chamber is covered by a
plate or cover bolted to the sides of the said chamber. The said gear
chamber is cast in one picce with one half of the valve box. By
removing the cover of the gear chamber the gear wheel therein may be 3
removed and replaced or lubricated or cleaned.
We also provide the valve box with an opening, which is closed by a
cover bolted over the said opening for facilitating the removal and
replacement of the valve, or parts thereof, or for cleaning and lubri-
cating the several parts of the valve.
3

page_text: Instead of using a worm or tangent screw, as usual for gearing with
the worm wheel on the periphery of the disc valve, we use either a
spur pinion or a bevil pinion, the former gearing with a spur wheel, and
the latter with a bevil wheel on the periphery of the disc valve. The
spur pinion or bevil pinion works in the gear chamber described of the
valve box, and the spindle of the pinion works in a stuffing box fixed
on the exterior of the said gear chamber. When a bevil pinion is
employed the gland of the stuffing box in which the spindle of the said
pinion works may constitute the cover for the gear chamber.
Instead of working the disc valve by means of toothed gearing it may
be worked by the direct action of a spindle or shaft. In this arrange-
ment the spindle passes from the axis of the disc valve through the
valve box to the exterior thereof, and works in a stuffing box on the
outside of the said valve box. The end of the spindle external to the
valve box may be worked by a lever or by gearing.
SPECIFICATION in pursuance of the conditions of the Letters Patent,.
filed by the said William Henry Westwood, Edward Wright, and
Edward Thomas Wright in the Great Scal Patent Office on the
23rd March 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wc, WILLIAM
HENRY WESTWOOD, and EDWARD WRIGHT, and EDWARD THOMAS
WRIGHT, all of Dudley, in the County of Worcester, Boiler and Gas
Holder Makers and Engineers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
.Letters Patent, bearing date the Thirtieth day of September, in the year
of our Lord One thousand eight hundred and seventy-four, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto us, the said William Henry Westwood,
Edward Wright, and Edward Thomas Wright, Her special license,
that we, the said William Henry Westwood, Edward Wright, and
Edward Thomas Wright, our executors, administrators, and assigns, or
such others as wc, the said William Henry Westwood, Edward Wright,
and Edward Thomas Wright, our exccutors, administrators, and assigns,
should at any time agree with, and no others, from time to time, and at

page_text: all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle
of Man, an Invention for "IMPROVEMENTS IN STOP OR REGULATING VALVES
FOR REGULATING OR CONTROLLING THE PASSAGE OF LIQUIDS AND GASES THROUGH
PIPES OR TUBES, AND FOR OTHER LIKE PURPOSES," upon the condition (amongst
others) that we, the said William Henry Westwood, Edward Wright,
and Edward Thomas Wright, our executors or administrators, by an
instrument in writing under our or their hands and seals, or under
the hand and seal of one of us or them, should particularly describe
and ascertain the nature of the said Invention, and in what manner
the same was to be performed, and cause the same to be filed in
the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Edward Wright, on behalf of :
myself, and the said William Henry Westwood, and Edward Thomas
Wright, do hereby declare the nature of the said Invention, and in what
manner the same is to be performed, to be particularly described and
ascertained in and by the following statement thereof, that is to say :-
-
Our improvements relate to those kinds of stop or regulating valves a
in which a valve in the form of a disc is employed, the valve box being
made in halves and bolted together by their flanged faces, one half of
the said valve box carrying the valve seat. The disc valve and the face
or seat of the valve box against which the said valve works are per-
forated with radial openings. By turning the disc valve so that its
openings coincide with those in the valve seat the valve is opened, and
by turning the disc valve so that its openings are presented to an
unperforated part of the valve seat the valve is closed. The disc valve
is partly rotated for opening and closing the valve by a toothed quadrant
or portion of a worm wheel on the periphery of the disc, with which a
worm or tangent screw gears. In the said valves as ordinarily
constructed the valve and the gearing for working it cannot be
removed from the valve box without separating the halves of the valve
box.
.

page_text: Figures 1 and 2 represent sections taken at right angles to one
another of a stop or regulating valve provided with a gear chamber
according to our Invention, and Figure 3 is a plan of the same.
a, b, are the halves of the valve box bolted together in the usual way,
the half box a carrying the perforated valve seat c; d is the perforated
disc valve pressed to its seat c by the bow spring e. The disc valve dis
partly rotated for opening and closing the valve by a worm f worked by
a winch on the spindle f³ gearing with a portion of a worm wheel g on
the periphery of the disc valve d. In the half valve box is a small
rectangular chamber h, in which the worm wheel ƒ is situated, and 1
works the said chamber h, being made in one piece with the said half
box b. The spindle f2 of the worm f works in a stuffing box k formed
on the exterior of the gear chamber h, as represented. The top of the
gear chamber is covered by a plate or cover i bolted to the sides of the
said chamber. By removing the cover i of the gear chamber h the gear
wheel therein may be removed and replaced or lubricated or cleaned
without separating the halves a, b, of the valve box.
Figures 4 and 5 represent sections taken at right angles to one
another of another valve provided with a gear chamber h, i, as last
described, but instead of using a worm or tangent wheel and worm
wheel for opening and closing the disc valve d a spur pinion 7 is situated
in the gear chamber h, and gears with a portion of a spur wheel mon
the periphery of the disc valve. The spindle 12 of the spur pinion
works in the stuffing box n outside the gear chamber h.
Figure 6 represents a valve, in which instead of a spur pinion a bevil
pinion p is employed to gear with a portion of a bevil wheel q on the
periphery of the disc valve d. The stuffing box ", in which the
spindle p³ of the bevil pinion p works, constitutes the cover of the gear
chamber h.
Figure 7 represents in section a valve, in which the half valve box is
so constructed that the valve and its gearing may be removed and
replaced with great facility. In this arrangement the top of that half b
of the valve box in which the disc valve d works is provided with an
opening at s, s, of greater diameter than the disc valve, the said opening
being closed by a cover t, which is bolted over the said opening in the
manner represented in the Drawing. By removing the said cover the

page_text: disc valve d and gear wheel / may be lifted from the valve box for
cleaning or lubricating the said parts.
Figures 8 and 9 represent sections taken at right angles to one
another, and Figure 10 an elevation of a valve, in which the gear
chamber extends completely across the valve box for permitting of the
removal and replacement of the disc valve and its gear wheel. The
gear chamber in this arrangement is marked u and its cover is marked v.
In this arrangement the disc valve d instead of being kept to its seat c
by a bow spring is kept to its seat by the coiled springs w, w, the tension
of which is regulated by the set screws x, x. The springs w, w, are
situated in the boxes y, y.
Figure 11 represents an arrangement for working the disc valve by
the direct action of a spindle or shaft. d is the perforated disc valve,
and c is its fixed seat; d is the spindle of the valve passing upwards
through the valve box to the exterior thereof, and working in a stuffing
box d³. The disc valve d is kept to its seat by the combined action of
the bow spring d' and the coiled spring d³ around the valve spindle.
A partial rotation is given to the disc valye for opening and closing the
valve by a lever or by gearing on the external end dª of the valve
spindle d².
Figure 12 represents in elevation a valve constructed according to our
Invention, provided with locking mechanism for locking the disc valve
when it is either open or shut, the said locking mechanism being
applicable where the gearing employed requires several rotations of the
winch or hand wheel to open or close the valve. On the screwed
spindle 2 of the disc valve an indicator 3, 4, slides, the boss 3 being made
into a screw box for working on the screwed spindle 2. The indicator is
prevented from rotating by means of its arms 4, 4, being engaged with
the fixed rods 5, 6. When the valve is closed by the rotation of the
spindle 2 the hole in the eye part 7 of the indicator is brought opposite
a hole S in the fixed rod 6, and the valve may be fastened in its closed
position by passing the loop of a padlock 10 through the holes in the
eye 7 and bar or rod 6, as represented, and locking the padlock. When
the valve is open-the-indicator 3, 4, occupies the position indicated in..
dotted lines, and may be fastened in that position by passing the loop
of the padlock through the eye 7 and the hole 11 in the rod 6. By this
arrangement the attendant is prevented from leaving the valve half open,

page_text: the valve being either completely closed or completely open before the
indicator 3, 4, can occupy one or other of its locking positions. This
locking mechanism is applicable to all the valves represented, except
that represented in Figure 11.
Having now described the nature of our Invention and the manner in
which the same is to be performed, we wish it to be understood that
we do not limit ourselves to the precise details herein described and
illustrated as the same may be varied without departing from the nature
of our Invention; but we claim as our Invention of improvements in
stop or regulating valves of the kind described,―
First. Making at the top or side of that half of the valve box in
which the disc valve works a gear chamber for containing the gear
wheel for gearing with and partly rotating the said disc valve, as herein-
before described and illustrated in Figures 1, 2, 3, 4, 5, and 6 of the
accompanying Drawings, whereby the gear wheel may be removed from
the valve box for cleaning or lubricating or for other purpose without
separating the halves of the valve box or detaching the said valve box
from the main.
Secondly. Making at the top or side of that half of the valve box in
which the disc valve works a gear chamber or an opening closed by a
cover, through which gear chamber or opening the disc valve and its
gear wheel may be removed for cleaning, lubricating, or for other
purpose, substantially as herein-before described and illustrated in
Figures 7, 8, 9, and 10 of the accompanying Drawings.
Thirdly. Working the disc valve by means of a spur pinion gearing
with a portion of a spur wheel on the periphery of the valve disc, as
represented in Figures 4, 5, and 7, or by means of a bevil pinion gearing
with a portion of a bevil wheel on the periphery of the disc valve, as
represented in Figure 6 of the accompanying Drawings.
Fourthly. The arrangement or combination of parts herein-before
described and illustrated in Figure 11 of the accompanying Drawings
for working the disc valve by the direct action of a spindle or shaft.
Lastly. The combination with valves of the kind represented in
Rigures 1 2 3 4 5 6 7 8 0 and 70 of the accompanying Drawings

page_text: of the locking mechanism represented in Figure 12 for locking the disc
valves in their open and closed positions.
In witness whereof, I, the said Edward Wright, have hereunto
set my hand and seal, this Nineteenth day of March, in the
year of our Lord One thousand eight hundred and seventy-five.
Witness,
JAMES STEPHEN,
138, Stourbridge Road,
Dudley.
EDWARD WRIGHT. (L.S.)