Improvements in Sluice Valves.
Year: 1892

page_text: Date of Application, 9th Sept., 1892
Complete Specification Left, 6th June, 1893—Accepted, 8th July, 1893
PROVISIONAL SPECIFICATION.
Improvements in Sluice Valves.
I, GEORGE WATSON, of 69, Dundonald Road, Kilmarnock, in the County of
Ayr, North Britain, Commercial Traveller, do hereby declare the nature of this
invention to be as follows, that is to say:
My said invention has for its object to improve the construction of sluice valves,
especially such as have to withstand considerable pressure; and to provide in an
improved manner for closing and opening the main valve without having the full
pressure on it, the main valve being made with a small port through it, the door
of which can be closed and opened independently of the main door by means of
mechanism arranged so as not to obstruct the through water way.
In carrying out the invention a main valve is employed which is made with
double doors or plates having parallel faces and fitting rings, and sliding between
opposite faces encircling ports in the valve casing; or the valve faces and port
faces may be slightly inclined so that there may be a wedging action in closing.
The main valve is worked by means of a screw spindle which is tubular for a
purpose hereinafter explained, and which, without moving on end, acts on an
internally screwed nut fixed to a projecting part of the main valve. Through the
tubular screw spindle there extends a small screw spindle, which also without
moving on end acts in an internally screwed nut secured to a small valve which is.
between the plates of the main valve and is adapted to close a small port through
the main valve. The small screw spindle is held by a collar on it in a packed or
stuffing box in the outer end of the tubular screw spindle, which is itself held in a
similar way in the end cover of the valve casing.
The valves may be arranged to move horizontally or vertically; the tubular screw
spindle having fixed on its outer end a bevil wheel or spurwheel with which there
gears a bevil or spur pinion on a shaft arranged to receive a turn key or lever.
The small screw spindle can be similarly acted on either through a pair of bevil
wheels or directly. The gearing has in each case in connection with it indicators
for showing separately the positions of the main and small valves. The small
port is in the part of the main valve which when that valve is closed is near or
close to the part of the casing into which the valve is withdrawn when open; and
when opening the valve the small valve is first withdrawn into that part of the
casing and does not obstruct the full waterway when the main valve is opened.
Dated this Eighth day of September 1892.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Sluice Valves.
I, GEORGE WATSON, of 69, Dundonald Road, Kilmarnock, in the County of
Ayr, North Britain, Mechanical Engineer, and Commercial Traveller, 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, that is to say :-
My said invention has for its object to improve the construction of sluice valves,
especially such as have to withstand considerable pressure; and to provide in an
improved manner for closing and opening the main valve without having the full
pressure on it, the main valve being made with a small port through it, the door of
Price &l

page_text: which can be closed and opened independently of the main door by means of
mechanism arranged so as not to obstruct the through water way.
In carrying out the invention a main valve is employed which fits between
parallel or inclined faces encircling ports in the valve casing. The main valve is
worked by a screw spindle which is tubular and which without moving on end acts
on the valve. Through the tubular screw spindle there extends a small screw
spindle which also without moving on end acts on a small valve, inside the main
valve, and adapted to close a small port through the main valve. The tubular
screw spindle is held in the end cover of the valve casing, and has fixed on its outer
end a bevil wheel or spurwheel with which there gears a bevil or spur pinion on a
shaft arranged to receive a turn key, and the small screw spindle is acted on
directly or similarly. The gearing has in each case in connection with it indicators
for showing separately the positions of the main and small valves.
And in order that my said invention and the manner of performing the same may
be properly understood, I hereunto append a sheet of explanatory drawings, to be
hereinafter referred to, and showing my improvements in sluice valves.
In
Figure, 1, of the drawings is a longitudinal vertical section showing the valves
open. Figure, 2, is a horizontal section as with the valves shut. Figure, 3, is a
vertical section of a part of another modification of my improved sluice valve.
these drawings the same reference letters and numerals are used to mark the same
or like parts wherever they are repeated.
As shown in Figures, 1, and, 2, of the drawings a main valve, A, is employed
which is made with double doors or plates, B. having parallel faces and fitting
rings, C, and sliding between opposite faces provided with fitting rings, C1, which
encircle ports, D, in the valve casing, E. Or, if desired the valve faces and
rings, C, and port faces and rings, C1, may be slightly inclined so that there may
be a wedging action in closing. The main valve, A, is worked by means of a
screw spindle, F, which is tubular, for a purpose hereinafter explained, and which
without moving on end, acts on an internally screwed nut, F 1, fixed to a projecting
part of the main valve. Through the tubular screw spindle, F, there extends a
small spindle, G, which is screwed at its inner end and which, also without moving
on end, acts on an internally screwed out, G 1, secured to a small valve, H, between
the plates, B, of the main valve, A, and adapted to close small ports, H 1, through
the main valve. The small screw spindle, G, is held by a collar, G 2, on it in a
packed or stuffing box, F 2, in the outer end of the tubular screw spindle, F, which
is itself held by a collar, F 3, on it in a stuffing box, J, in the end cover, E 1, of the
valve casing, E. The valves, A, and, H, are as shown in Figures, 1, and, 2,
arranged to move horizontally, the tubular screw spindle, F, having fixed on its
outer end a bevil wheel, K, with which there gears a bevil pinion, L, on a sleeve,
or tubular piece, M, fitting and working in the outer part of a bracket, E 2, fixed
to the corer, E 1, the sleeve being formed with a square, M 1, on its upper part to
receive a turn key or lever (not shown). The small screw spindle, G, has also
fixed on its outer end a bevil pinion, N, which gears with a bevil pinion, N 1, on a
shaft, N 2, which is carried by a bracket, P, on the cover, E 1, and passes upward
through the sleeve, M, its upper part being formed with a square, N 3, to receive a
lever. The gearing has in each case in connection with it indicators, Q, and, R,
for showing separately the positions of the main and small valves, A, and, H. The
indicator disk, Q, for the main valve, A, is formed with teeth, Q1, on its rim,
which gear with a spur pinion, Q2, fixed on the upper part of the sleeve, M. In
this case the indicator pointer, Q3, is fixed to the bracket, E 2, by a stud, Q4, the
indication being got by the turning of the disk, Q. The other indicator disk, R,
is fixed to the bracket, E 2, and the pointer, R1, is fixed on and turned by a
shaft, R 2, carried in projecting parts of the brackets, E 2, and, P, and having on
its lower part a spur pinion, R3, gearing with a spur pinion, R4, fixed on the
shaft, N 2. The small port, H. 1, is in the part of the main valve, A, which when
that valve is closed is near or close to the part of the valve casing, E, into which
the valve is withdrawn when opened; and when about to open the valve, A, the

page_text: small valve, H, is first withdrawn into that part of the casing, E, and does not
obstruct the full waterway when the main valve is opened.
In Figure 3, a modification of the gearing is shown, which is more suitable when
the valves (A) and (H) are arranged to move vertically. In this case the main
valve, (A) is moved by means of a spurwheel, S, on the tubular spindle, F, the
spurwheel being driven by a pinion, Si, on a stud, S2, which is made so as to be
capable of being turned by a key or lever. The small valve, H, is moved directly
through the screw spindle, G, and the indicators, Q, and, R, are arranged and
driven similarly to those of the first modification.
Having now particularly described and ascertained the nature of my said inveu-
tion and in what manner the same is to be performed, I declare that what 1
claim is.
The improved sluice valve, having a main valve sliding between parallel or
inclined faces encircling ports in the valve casing, and a small valve adapted to
close a port in the main valve, the said small valve when opened being moved
just out of the through water way, and the parts for moving the two valves
being substantially such as are hereinbefore described.
Dated this Fifth day of June 1893.
EDMUND HUNT,
Applicant's Agent.