Improved Hydraulic Valve for Packing Presses and similar Apparatus.
Year: 1894

page_text: Date of Application, 2nd June, 1894
OCIL
4605 Ant
20th
1405
PROVISIONAL SPECIFICATION.
Improved Hydraulic Valve for Packing Presses and similar
Apparatus.
1, JOHN CHARLES ETCHELLS, of Heaton Chapel, near Stockport, in the
County of Lancaster, Engineer, do hereby declare the nature of this invention to
be as follows:-
"
This invention relates to what is known as an "bydraulic stop or valve for
controlling the flow of water to and from hydraulic presses and is designed to
provide such a stop with balanced or equilibrium valves so arranged as to be
opened and closed without requiring much power to move them.
The valve or stop is constructed with two or more inlet ports each entering a
valve chamber. This chamber is placed at right angles to the inlet port and the
valve working in it is provided with a spindle extending through the chamber at
both ends. The valve is of any suitable construction resting upon a narrow seat
and the valve spindle is made of less diameter around the valve so that the area of
the valve upon which the pressure is exerted is the same both top and bottom.
annular space is also formed in the valve chamber around the valve to provide for
the free passage of the water. The spindles of the valve at the top and at the
bottom are packed with suitable hydraulic leathers or other packing.
An
The valve may be brought to its seat by means of a spring placed on one end of
the spindle and opened against the pressure of the spring by means of a lever or
screw. Or the spring may be so applied as to force or raise the valve off its seat
and a screw at the other end be employed to force the valve down upon its seat and
hold it closed.
In the body of the valve is an outlet port also closed by a valve this is constructed
as the ordinary type of screw valve and is opened to drain the press when the two
inlet valves are closed.
Two inlet valves are provided so that water at different pressures may be
introduced first through one and then through the other so that water at a low
pressure may be utilised as far as possible.
This arrangement of valve is specially designed and adapted to work in
conjunction with accumulators and intensifiers and it has the advantage that
each valve can be moved to or from its seating with an expenditure of but very
little power.
Dated this 31st day of May 1904.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.

page_text: Improved Hydraulic Valve for Packing Presses and similar
Apparatus.
I, JOHN CHARLES ETCHELLS, of Heaton Chapel, near Stockport, in the
County of Lancaster, 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 :-
+6
This invention relates to what is known as an hydraulic stop or valve for
controlling the flow of water to and from hydraulic presses and is designed to
provide such a stop with balanced or equilibrium valves so arranged as to be opened
and closed without requiring much power to move them.
It will be fully described with reference to the accompanying drawings.
Fig. 1. Sectional elevation on line - Fig. 4.
Fig. 2. Transverse section on line y-y Fig. 4 with the bracket H removed.
Fig. 3. Elevation of front part of the valve.
Fig. 4. Sectional plan on line 2- Fig. 1.
Fig. 5. Plan looking from below with the bracket H removed.
A
The valve or stop "is constructed with two or more inlet ports A to admit water
from different sources or at different pressures. Each port communicates with a
valve chamber B preferably placed at right angles to the inlet port in which is
placed a valve C the spindle c extending through the chamber at both ends.
seating is provided for the valve C at the lower side of the valve chamber B and
both chambers B connect with a single delivery port D through which the water
flows to the press.
The valve C is of any suitable shape and rests upon the narrow seating b while
the spindle c is made of less diameter below the valve to equalize the top and
bottom area of the valve upon which the pressure is exerted.
The valve chamber B is made larger than the valve or the ports or is formed
with an annular space around the valve c to allow for the free flow or passage of
the water.
The valve spindles e both above and below the valve Care packed with suitable
hydraulic leathers or other packing.
In the glands E above the valves are fitted screwed studs or plugs F abutting
against the ends of the spindles c by which the valves C are forced into and held
upon their seatings when closed. At the other end the valve spindles c pass
through the glands E' and are each provided with a collar or washer e and nuts e¹.
The collar or washer e rests against or is acted upon by a spring G which raises
the valve from its seat when the screw F at the other end is drawn back. The
spring G is compressed against the guide bracket H bolted to a flange H' on the
under side of the casting. Instead of being screwed the studs F may be held down
by a lever. Instead of this arrangement the valve C may be brought to its seat
by means of a spring placed on one end of the spindle and opened against the
pressure of the spring by means of a lever or screw.
1
The apparatus is also constructed with an outlet or exhaust port J which is
closed by the valve K. The discharge port J is connected to the delivery port D
and when the valve K is opened it drains the waste water from the press when
the two inlet valves C are closed. The valve K is constructed as the ordinary
type of screw valve and is held closed upon its seat ; by the screw k on the
spindle k¹.
Two inlet valves are provided so that water at different pressures may be
introduced first through one and then through the other so that water at a low
pressure may be utilised as far as possible, but if desired one or more additional

page_text: inlet valves may be employed if it were found desirable to supply a press with
water from other sources.
This arrangement of valve is specially designed and adapted to work in
conjunction with accumulators and intensifiers and it has the advantage that each
valve can be moved to or from its seating with an expenditure of but very little
power.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. An hydraulic "stop" valve for packing presses and similar apparatus
constructed with a casing provided with two (or more) inlet ports each controlled
by a valve and leading into one delivery port and with an outlet port connected
therewith in combination with two (or more) inlet valves with spindles passing
through valve chambers and packed top and bottom actuated in one direction by a
screw or lever and in the opposite direction by a spring and an outlet or exhaust
valve to close the outlet port substantially as and for the purposes described.
2. An hydraulic "stop" valve having the several parts constructed and arranged
in combination substantially as described and shown.
this 60th der of Fahruary 1895
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.