Improvements in Valves used in connection with Hydraulio and other Pressure Machines.
Year: 1893

page_text: Date of Application, 26th May, 1893
Complete Specification Left, 24th Feb., 1894-Accepted, 14th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in Valves used in connection with Hydraulio and
other Pressure Machines.
I, EDWIN DEARDEN of Daisy Bank Darnall Sheffield in the County of York
Engineer do hereby declare the nature of this invention to be as follows:-
I make a barrel or body part of suitable metal of a diameter and length
internally in proportion to the size of required passages or ports. To each end of
said barrel or body, I fit a cover bored true therewith; I make the valve or
moveable part to revolve in the barrel and with a rod or spindle at each end
projecting through the end covers in which are recesses to receive packing
rings.
The object hereby attained, is a simple valve having a revolving motion and
while working under extreme pressure (being supported at both ends) the wear is
considerably reduced.
Dated the age day of V….. 1902
EDWIN DEARDEN.
COMPLETE SPECIFICATION.
Improvements in Valves used in connection with Hydraulio and
other Pressure Machines.
CAROLINE DEARDEN Executrix of the late Edwin Dearden, of Daisy Bank,
Darnall, Sheffield, in the County of York, Engineer, 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:-
I
My invention relates to improvements in valves used in connection with hydraulic
and other pressure machines, and has for object to reduce considerably the wear
and tear of such valves and at the same time to simplify their construction.
effect this object by making the movable part of the valve to revolve in a cylindrical
barrel or body part, and providing it with a rod or spindle projecting at each end
through covers fitted upon the ends of the barrel or casing of the valve.
In order that my invention may be more clearly understood reference is had to
the accompanying drawings upon which :-
Figure 1 is a vertical section of a valve of my construction with the exhaust
passage forined through its stem,
Figure 2 being a sectional plan of the same.
Figure 3 is a vertical section of a valve having two passages formed through it.
Figure 4 is a sectional plan of the same.
The valve is shewn in its alternate positions.
In carrying out my invention I make the barrel or valve chamber of suitable
metal in the form of a cylindrical casing A, having an internal diameter and length
to correspond with the dimensions of the required passages or ports B and C, and
closed at one end D. Upon the other end of the chamber or casing I fit a cover E
bolted or otherwise securely fixed thereon, and bored through the centre for the
purpose of forming bearings within which the valve-spindle F revolves. The
closed end D of the chamber A is similarly bored through the centre, and
suitable grooves or recesses G are formed on the inner face thereof and that of the
cover to receive packing rings H.

page_text: To the movable part of the valve K which is arranged to revolve within the
chamber or casing A, I fix a stem or spindle F projecting at each end through the
bearings provided in the opposite ends or covers D & E of the casing A.
In the arrangement shewn on Figures 1 and 2, it will be seen that the supply of
water from the accumulator or other source entering at M passes through he port
or valve B formed in the plug K of the valve to the cylinder at N. Upon turning
the plug of the valve round by means of the spindle F to its alternate position
communication is closed between the accumulator and cylinder, but is opened from
the cylinder at N to the exhaust passage O, through the port C formed in the
valve.
In the arrangements shewn in Figures 3 and 4 the port C being brought into the
open position allows the escape of water through it from the cylinder at N to
the exhaust passage O. When the valve K is turned to its alternate position
communication is established between the accumulator at M and the cylinder at N,
through the port or passage B, while the passage C is closed.
I may arrange for two or more valves to be enclosed within a common casing,
and the stems may be made either in one with the valve, or the valve may be
secured upon the spindle in any suitable manner.
In lieu of making the chamber with a closed end and one cover, I may make
both ends open and arrange for two covers to be secured thereon, and bored through
the centres as described.
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 :-
1. A valve for hydraulic and other pressure machines provided with separate
ports for the entrance and exit of the fluid, and arranged within a cylindrical
casing or body, through the covers or ends of which suitable bearings are formed
for the valve-spindle to revolve within, substantially as described and shewn upon
the accompanying drawings.
2. A hydraulic valve constructed, combined and arranged to operate substantially
as hereinbefore described and illustrated on the accompanying drawings.
Dated this Twenty-fourth day of February 1894.