An Improved Hydraulic Pressure Reducing Valve.
Year: 1896

page_text: Date of Application, 16th Dec., 1896
Complete Specification Left, 15th Sept., 1897-Accepted, 4th Dec., 1897
PROVISIONAL SPECIFICATION.
An Improved Hydraulic Pressure Reducing Valve.
We WILLIAM ROBERT HARRISON, of Paragon Chambers, Paragon Street,
Consulting Engineer, and WILLIAM MORRIS JEFFERSON, of Old Mill House,
Dansom Lane, Engineer, both in Hull in the County of Yorkshire, do hereby
declare the nature of this Invention to be as follows:-
The object of our invention is to construct a regulating valve for use with
liquids in connection with oil or feed cake presses or the like, preferably in
connection with hydraulic accumulators, to allow of the pressure transmitted by
the accumulator or accumulators being regulated to suit the amount required at
any press or set of presses.
For the purpose of our invention, we employ an apparatus placed in any con-
venient position between the accumulator and the press or presses, such apparatus
consists of a body-casting or forging, of any suitable metal or material, and having
preferably its inlet for the fluid from the accumulator at its upper part, and the
outlet to the presses towards the bottom, the intervening space in the inside
between the inlet and the outlet being bored, drilled or cored out to receive suitable
valves, spindles, and rams, and also to provide bye pass passages in conjunction
with the inlets and outlets. We employ preferably the first valve actuated from
the accumulator in an inverted form, suen valve being of throom or other
convenient type, and having a tail piece or spindle carried upwards through a
suitable stuffing box, and projecting above the top of the body, and bearing on the
underside of a pivoted lever or any other suitable appliance for giving the
necessary pressure or weight required for regulating purposes.
two
Below this said mushroom or other valve, and working in conjunc-
tion with it, but not necessarily attached to it, are preferably
rams or pungers of unequal diameters, the lower one being for convenience the
larger, these rams or plungers move upwards and downwards, and by so doing
open or close the reducing valve, these motions being partly controlled by the
differential diameters of the plungers or rams, preferably assisted by a small
apperture for the admission of the external air, and also being regulated by the
pivoted lever or the like, pressing on the top of the spindle of the mushroom valve,
any reduced pressure can be put on the press or presses by the adjustment of the
weight on the regulating lever or its equivalent. At the bottom of the body
casting or forging, we provide a screw plug or cover for the purpose of accessibility
to the internal parts of the apparatus.
This invention is also applicable for presses for packing purposes and the like,
also for any purposes requiring the hydraulic pressure reducing."
Dated this Fifteenth day of December 1896
JOHN E. WALSH,
Savile Street, Hull and Crossley Street Halifax,
Patent Agent for the Applicants.

page_text: An Improved Hydraulic Pressure Reducing Valve.
We, WILLIAM ROBERT HARRISON, of Paragon Chambers, Paragon Street,
Consulting Engineer, and WILLIAM MORRIS JEFFERSON, of Old Mill House,
Dansoni Lane, Engineer, both in Hull, in the County of Yorkshire, do hereby
declare the nature of this Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
The object of our invention is to construct a regulating valve, or apparatus for
use with liquids or fluids in connection with oil or feed cake presses or the like,
preferably in connection with hydraulic accumulators, to allow of the pressure
transmitted by the accumulator or accumulators being regulated to suit the amount
required at any press or set of presses, or for fluids for regulating the pressure from
boilers to a lower pressure.
DESCRIPTION OF DRAWING.
Fig. 1. is a sectional elevation of our hydraulic or fluid pressure reducing valve
or apparatus.
AA is a body-casting or forging, of any suitable material, such as steel, gun-
metal, or the like, and having various internal chambers or passages. B is prefer-
ably the inlet for the fluid or liquid to these internal passages and C the outlet
from them. D is the regulating or reducing valve, which is preferably an inverted
valve, of the mushroom or other suitable type. E is a spindle or tail-piece but not
necessarily attached to the valve, this spindle or tail-piece passes upwards from
the valve 1 through any suitable stuffing-box F, and projects above it, until it
obtains a bearing on the under-side of a pivotted lever G, which is in turn con-
trolled by the regulating weight L being moved upon it. H and J are pistons,
plungers, or rams, of different diameters, which move upwards and downwards, and by
so doing allow the regulating valve D to open or close, these upward and downward
motions being partly controlled by the differential diameters of the pistons or rams,
assisted by means of the air-way K, regulater by the varying pressure of the
pivotted lever G, adjusted by the moveable weight L, and transmitted through the
spindle E on to the tai-end of the regulating valve D. N 1. and N 2. are bye-pass
passages giving communication between the inlet B and the outlet C, which
communication is controlled by the regulating valve D.
P and R are hydraulic cup leathers or washers for preventing any fluid or liquid
from passing the rams or plungers H and J. M is a screw plug or cover for the
purpose of providing accessibility to the internal parts of the apparatus, and to
form a stop to prevent any undue travel of the regulating valve D), or of the
pistons H and J. S and T are. hydraulic nuts or couplings, for connecting
the inlet and outlet pipes to the apparatus.
The action of this apparatus for regulating or reducing the pressure from
hydraulic accumulators, pressure pumps, or the like, to oil or feed cake or other
prosses, or to hydraulic cranes, is as follows:
The apparatus is placed in any convenient position between the accumulator or
pump and the press or presses, the inlet piping being coupled up at B, and the
outlet piping at C, the fluid or liquid from the accumulator or pump then presses
against the tail-end of the regulating valve D, and by partially opening it, finds
it way through the bye-pass passages N 1. and N.2. to the the outlet opening C,
and then through the delivery piping to the press or presses, or to the crane, as the
case may be. This flow continues until the pressure in the press or presses or at

page_text: the crane has reached a suitable height, when the regulating valve 1 commences
to close, owing to the action brought about by the piston or ram J being so much
larger in diameter than the regulating valve D. It will be seen by reference to
the accompanying drawing, that if a further pressure be exerted upon the tail-end
of the regulating valve D, owing to the spindle E. being forced down by the
pressure given through the pivotted lever G in conjunction with the adjustable
weight L, then the regulating valve D will again open, and allow of the pressure
in the outlet piping rising more nearly to the initial pressure in the inlet piping,
hence it will also be seen that by adjusting the weight L upon the lever G any
desired pressure can be obtained between that of the highest initial pressure and
that which would be reached by the large piston J closing the valve D, but for the
action of the adjustable pressure brought to bear upon the tail-end of the valve D
by means of the lever and weight G and L.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The apparatus for use with liquids or fluids for regulating or reducing the
pressure from hydraulic accumulators, pressure pumps, presses for extracting oil
or for other suitable purposes, or apparatus where the high pressures used need
adjusting or regulating to lower pressures; in the manner and for the purposes
substantially as shown and described.
2. The combination of the regulating valve D, the pistons H and J of differential
diameters, the air-way K, the spindle E, and the adjustable weighted-lever G;
operating and constructed in the manner and for the purposes substantially as
shown and described.
3. The apparatus for use with fluid such as steam or the like, for regulating the
pressure from the boilers to any lower pressure required; operating and constructed
in the manner and for the purposes substantially as shown and described.
Dated this fourteenth day of September 1897
JOHN E. WALSH,
Savile Street, Hull and Crossley Street Halifax,
Patent Agent for the Applicants.