Improvements in Double Acting Sluice Valves.
Year: 1892

page_text: Date of Application, 20th May, 1892
Complete Specification Left, 11th Oct., 1892-Accepted, 10th Dec., 1992
PROVISIONAL SPECIFICATION.
Improvements in Double Acting Sluice Valves.
THOMAS BLAKEBOROUGH Hydraulic Engineer Brighouse Yorkshire do hereby
declare the nature of this invention to be as follows:-
Improvements in sluice valves to resist high pressure water & consists of one
sluice working within the other, the internal one being fitted with an arrangement
of catch gear to insure the same being opened first & closed the last.
Also the sliding spindle being fitted with an improved friction indicator, to shew
the position of the plug in the shell.
The object of the two sluices aforementioned is to enable large sluice valves to
be opened to the full, and closed easily, by the spindle, and without concussion to
the mains with which they are connected, and that of the indicator to shew at any
moment the position of the aforesaid sluices as to how far open or shut.
Tdi 15th day of T... 1009
THOMAS BLAKEBOROUGH.
COMPLETE SPECIFICATION.
Improvements in Double Acting Sluice Valves.
THOMAS BLAKEBOROUGH, Hydraulic Engineer, Brighouse Yorkshire 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 relates to certain improvements in sluice valves to resist high
pressure & to enable them to be opened & closed easily and without concussion in
the mains and consists of one sluice working within the other and by placing the
internal sluice near the bottom of the external one.
Both the sluices are actuated by one sliding rod or screwed spindle.
The internal sluice is fitted with an arrangement of catch gear to insure the same
being opened first and closed the last.
The sliding rod is fitted with an improved friction indicator.
The foregoing being the nature and object of this invention; It is now described
and illustrated how it is practically applied in a sluice valve constructed according
to this invention as follows:-
Reference being had to the annexed sheet of drawings, which are marked with
letters and figures of reference corresponding with those in the following explanation
like letters being used to denote like parts throughout.
Fig. 1 is a sectional elevation of a double acting sluice valve suitable for high
pressure water purposes constructed and fitted according to my invention.
A, is the shell or outer case of cast iron with gun metal faces.
B, is the external or larger sluice of cast iron with gun metal faces outside to
Buit those in shell A and inside to suit the internal sluice C.
C, is the internal or smaller sluice of cast iron, with gun metal faces, to which is
attached the gun metal nut E, or sliding rod.
D, is the sliding rod, or screwed spindle of gun metal.
F, is the friction indicator for sliding rod.
G, is the catch gear, for preventing the small sluice closing, until the large one
has closed.
H, is the lever, for withdrawing the bolt with slings, and spring or weights at
one end, and wheel at the other.
CD 077

page_text: A, is the power cynnder.
L, the friction wheels.
Presuming the valve to be closed the action of the parts are as follows-
When the sliding rod.D is actuated the internal sluice C is opened first then the
large sluice B opens and the catch gear bolt G engages with the sluice C and
prevents it being closed until the sluice B is closed.
The valve being now open the action in closing is as follows:-
When the sliding rod D is actuated the sluice B is closed first, and as it closes
the lever H with wheel comes in contact with the inclined plane I and just as the
sluice B is closed the bolt G is withdrawn thus allowing the sluice C to be closed
the last and opened first.
The indicator F is for use with sliding rod D and power cylinder K, and is
attached to the sliding rod D with two friction wheels L held in close contact to
the rod with springs.
The axle of one of the wheels is continued up to and connected with a train of
wheels with dial and pointer.
As the sliding rod D moves it causes the friction wheels L to revolve thus
actuating the train of wheels and pointer on dial and shewing the position of sluice
in shell A.
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
1st. The position of sluice C within sluice B in the manner herein set forth and
illustrated at Fig. 1 on the accompanying drawing.
2nd. The catch gear which causes the sluice C to be closed the last in the manner
herein set forth and illustrated at Fig. 1 on the accompanying drawing.
3rd. The frictional indicator F in the manner herein set forth and illustrated at
Figs. 1 & 2 on the accompanying drawing.
Dated this 10th day of October 1892.