Improvements in Large Sluice Valves.
Year: 1894

page_text: Date of Application, 3rd Mar., 1894-Accepted, 21st Apr., 1894
COMPLETE SPECIFICATION.
Improvements in Large Sluice Valves.
I, ROBERT BLAKEBOROUGH Hydraulic Engineer, "Ashlea" Brighouse York-
shire, 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 :-
My said invention has for its object to improve the construction of large sluice
valves known as double or treble door sluice valves so as to obviate the necessity
of casting in, solid with the body casting, ribs, partitions, slides or faces across
the waterway portion of the valve body, for the door or slides to work against,
or fitting them into and across such waterway by seperate castings, and that when
the doors or slides are fully open a clear round passage may be provided through
the valve of the full diameter of the pipes to which they may be attached.
In carrying out my invention, I make the body of the valve, both the part into
which the doors or slides move when opened and the waterway portion, all in one
casting. Two opposite valve seats are cast in the body, round the waterway and
parallel with the chamber into which the doors or slides move when opened, these
valve seats, also those on all the doors or slides may be provided with facings
of gun-metal, brass or other metal.
Into the said body casting is fitted one main door or slide having faces
corresponding to those around the waterway of the said body casting and in
practice made watertight therewith and into the interior of this main door or
slide are fitted other doors or slides of any number or shape that may be desired
and made watertight therewith, these inner doors also the main door or slide may
be worked by screws or any other gearing of suitable known kind.
The main door or slide may be made of two or more castings and the valves may
be made to work in either a vertical or horizontal position.
In order that my said invention and the manner of performing the same may be
properly understood I herewith append one sheet of explanatory drawings hereafter
referred to and shewing one modification of my improvements.
Fig. 1 on said sheet of drawings is a transverse vertical section of the valve
having one main door and two inner doors or slides, and shewing the main door
open and the waterway of the valve clear of all ribs, webs, partitions, slides or
faces.
Fig. 2. is a longitudinal vertical section and Figs. 3 & 4 are respectively a
horizontal section and plan corresponding to Fig. 1.
In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated.
The valve dy A is made all in one casting, and embraces the waterway
portion L and the chamber M into which the doors or slides move when opened.
B & C are small doors or slides fitted into the interior of the main door D, these
inner doors and the main door, and also the valve seats on the body of the valve
are provided with gun-metal facings N.
Each door or slide is moved in the usual manner by means of seperate screwed
spindles E, F, G, working through internally screwed nuts H, I, J, which are fixed
to the top end of each door, the spindles E, F, G, pass out of the valve body
through stuffing boxes cast on the cover K which closes up the chamber M, the
outer end of spindles being made square to receive key for working them.

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,
Making large sluice valves with two or three or more doors or slides each
worked by a seperate screwed spindle or other gearing, the ribs, webs, partitions,
slides or faces needful for all such doors, except the main door, to work against,
being in or on the main door instead of cast with or. fitted into and across the
waterway portion of the valve body as heretofore, in the manner substantially as
•hereinbefore described.
Dated this Second day of March 1894.