IMPROVEMENTS IN VALVES FOR REGULATING THE FLOW OF STEAM, WATER, OR OTHER FLUIDS, AND IN MEANS OR APPARATUS FOR WORKING OR ACTUATING THEM DIRECT FROM THE GOVERNOR, OR WHEN WORKED BY EXPANSION CAMS IN CONNECTION THEREWITH
Year: 1862

page_text: LETTERS PATENT to William Stuart Wood, of Larchfield Foundry, Leeds,
in the County of York, Engineer, for the Invention of "IMPROVEMENTS
IN VALVES FOR REGULATING THE FLOW OF STEAM, WATER, OR OTHER FLUIDS,
AND IN MEANS OR APPARATUS FOR WORKING OR ACTUATING THEM DIRECT
FROM THE GOVERNOR, OR WHEN WORKED BY EXPANSION CAMS IN CONNECTION
THEREWITH."
Sealed the 22nd August 1862, and dated the 27th February 1862.
PROVISIONAL SPECIFICATION left by the said William Stuart Wood
at the Office of the Commissioners of Patents, with his Petition, on the
27th February 1862.
I, WILLIAM STUART WOOD, of Larchfield Foundry, Leeds, in the County of
York, Engineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN VALVES FOR REGULATING THE FLOW OF STEAM, WATER, OR
OTHER FLUIDS, AND IN MEANS OR APPARATUS FOR WORKING OR ACTUATING THEM
DIRECT FROM THE GOVERNOR, OR WHEN WORKED BY EXPANSION CAMS IN CONNECTION
THEREWITH," to be as follows:-
This Invention consists of a duplex disc valve or double disc valve with
suitable openings or perforations therein mounted upon a spindle passing
through stuffing boxes in a box or casing suitably formed, with inlet and outlet
ports, and arrangements for connecting same to or between the conducting.
pipes. This duplex valve is placed between two disc seats, faces, or surfaces

page_text: (having suitable or corresponding openings therein,) which are capable of
adjustment to obtain proper jointing or fitting thereof to the faces of the
valve; steam, water, or other fluids may be admitted either between the two
dises or faces of the valve and pass through the openings thereof, and of the seats
when such openings are placed opposite to each other, or such fluids may be
admitted and pass through the openings of the seats and thence through the
openings of the valve. The valve is caused to turn upon its axis by means of
a lever fixed on the spindle thereof and actuated by the governor, thereby
opening or closing the apertures or openings of the valve and seatings. And
in order to give a very quick motion or movement to the valve an expansion
coupling is placed betwixt the valve and governor, consisting of right and left
band screws of quick pitch, the coupling or screw boss having a lever thereon,
which by rod is connected to and actuated by the governor. I also employ
such expansion couplings or right and left hand screw joints for traversing cut-
off cams to operate valves, as aforesaid, or otherwise expansion valves, or a
single screw coupling of quick pitch may be employed as aforesaid.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Stuart Wood in the Great Seal Patent Office on
the 27th August 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
STUART WOOD, of Larchfield Foundry, Leeds, in the County of York, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of February, in the year of our
Lord One thousand eight hundred and sixty-two, in the twenty-fifth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said William Stuart Wood, Her special license that I, the said
William Stuart Wood, my executors, administrators, and assigns, or such
others as I, the said William Stuart Wood, my executors, administrators,
and assigns, should at any time agree with, and no others, from time to
time and at 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 VALVES FOR REGULATING THE FLOW OF STEAM,
WATER, OR OTHER FLUIDS, AND IN MEANS OR APPARATUS FOR WORKING OR
ACTUATING THEM DIRECT FROM THE GOVERNOR, OR WHEN WORKED BY EXPANSION

page_text: CAMS IN CONNECTION THEREWITH," upon the condition, amongst others, that I,
the said William Stuart Wood, my executors or administrators,. by an instru-
ment in writing under my, or their, or one of their hands and seals, 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Stuart Wood, do hereby
declare the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement (that is to say):-
.
This Invention consists of a duplex disc valve or double disc valve with
suitable openings or perforations therein mounted upon a spindle passing
through a stuffing box in a box or casing suitably formed with inlet and
outlet ports, and arrangements for connecting same to or between the con-
ducting pipes. This duplex disc valve is placed between two dise seats, faces,
or surfaces (having suitable or corresponding openings therein), one or both of
which are capable of adjustment to obtain proper jointing or fitting thereof to
the faces of the valve. Steam, water, or other fluids may be admitted either
between the two discs or faces of the valve, and pass through the openings
thereof and of the seats, when such openings are placed opposite to cach
other, or such fluids may be admitted and pass through the openings of the
seats, and thence through the openings of the valve. The valve is caused to
turn upon its axis by means of a lever fixed on the spindle thereof and
actuated by the governor, thereby opening or closing the apertures or openings
of the valve and seatings. And in order to give a very quick motion or
movement of the valve an expansion.coupling placed betwixt the valve and
governor, consisting of right and left hand screws of quick pitch, the coupling
or screw boss having a lever thereon, which by rod is connected to and
actuated by the governor. I also employ such expansion couplings or right
and left-handed screw joints for traversing cut-off cams to operate valves as
aforesaid, or otherwise expansion valves. Or a single screw coupling of quick
pitch may be employed, as aforesaid.
In order that the Invention may be clearly understood, I have given
reference to an accompanying Sheet of Drawings, in which Fig. 1 is a
section of the duplex valve, and also of the valve box or casing, in which it
is placed; and Fig. 2 is another section of the same, taken at right angles
to the former.
A is the valve box or casing, and B is a lid or cover to au opening, for.

page_text: fitting and placing the valve and its seatings therein; C is the duplex valve,
which is formed or composed of two circular plates or discs C¹ and C², and a
'spindle C³, which passes through a stuffing box D affixed on the casing, and
having a lever D¹ fixed thereon, in which is a stud D2, for attaching the
governor rod. The valve is placed between two seatings E, F, the seating E
being formed in the diaphragm I, which is cast in the valve box or casing.
The seating F is fitted within the seating E, and is kept in proper position,
and adjusted so as to keep the faces of the valve and seatings in contact with
each other by means of "dogs" and set screws f, which enter notches in the
said seating F, or by a tail pin J applied to the stem F, which passes through
When employing
a stuffing box in the lid B, as shewn by the dotted lines.
"dogs" and set screws no stem is required on the seating or stuffing box on
the lid, but the lid has to be removed to adjust the seating by tightening the
set screws. When the tail pin is employed, as shewn by dotted lines, one of
the "dogs" would be sufficient to prevent turning of the seating, and the lid
does not require to be removed to adjust the valve and seatings. Openings
or perforations e are formed in the valve discs, and also corresponding ones in
the seatings, so that when the valve is placed with its openings opposite to
those in the seatings there will be a free passage for steam or other fluids;
G and H are the inlet and outlet ports, which are provided with flanges g, h,
to connect the said valve box to and betwixt steam or other piping. The inlet
may be at H when the steam or other fluids will pass between the two discs
of the valve, and thence through the openings e to the outlet G, as shewn by
the arrows, or the valve box may be reversed in its application, the steam
entering at G, thence passing through the openings e, and betwixt the discs
out at H, as it will be readily seen, that in either case this valve will be in
equilibrium, consequently easily operated.
Fig. 3 is a plan of my improved valve with an expansion coupling applied
thereto. A is the box or casing, to which is cast a lug a, in which is fixed a
short quick pitched left-handed screw b; another similar screw, but right-
handed, c is attached to the lever d; a coupling or screw boss lever e is placed
on both screws, and a stud f is fixed in the lever to which the governor rod
is to be attached. It will be evident that as the governor actuates or turns
the boss or coupling a very quick motion will be given to the lever d to open
or close the valvė.
Fig. 4 shews the manner of applying this expansion coupling for traversing
or working cut-off cams. A is a plate, on which is a lug B with a right-
handed screw C fixed thereto; D is a slide frame, with a left-handed screw E
fixed therein; F is the coupling or screw boss lever; G is a spindle attached

page_text: to the frame D, but capable of rotating therein; H is a hollow shaft, sup-
ported on pedestals I, J, and carrying a cam K, which acts against a friction
roller L placed in the end of a rod M, which is connected to the valve
lever N. Motion is given to the shaft II by bevil wheels O, and there is a
slot in the said shaft, and a cotter g in the spindle, which passes through into
the cam, so that as the governor operates and turns the coupling lever
forward or backward the spindle will slide endwise in the shaft, and move the
cam in or out, and thereby change the position of the roller on the cam, so
as to alter the action upon the valve to cut off sooner or later, as required.
It will also be observed
Figs. 5 and 6 are plan and end view of the cam K.
that a single screw may be employed for these purposes, but I prefer the
double screws.
Having thus fully described the nature of my said Invention, and the
manner in which the same is or may be performed or carried into practical
operation, I would have it understood that I do not confine or restrict myself
to the precise details of construction or arrangements of the parts or apparatus
as herein set forth; but what I claim as of my Invention, and which I believe
to be new is,―
Firstly, the adjustable duplex disc valve, in manner and for purposes sub-
stantially as herein described and illustrated.
Secondly, the application and use of screws or couplings for working throttle
or other valves, as explained.
Thirdly, the application and use of such expansion couplings for working
cut-off cams from the governor.
In witness whereof, I, the said William Stuart Wood, have hereunto
set my hand and seal, this Twenty-fifth day of August, One thousand
eight hundred and sixty-two.
Witness,
W. TASKER,
Patent Agent,
Halifax.
WILLIAM STUART WOOD. (L.S.)