Improvements in or relating to Hydraulic Rams.
Year: 1898

page_text: Improvements in or relating to Hydraulic Rams.
I, ROBERT CHARLES GREEN, of 40, Hyde Street, Winchester, in the County of
Hants, Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to hydraulic rams.
-
The main object of my said invention is to mitigate the noise made by the
pulse or waste valve of a hydraulic ram, when in action.
In hydraulic rams, as now ordinarily made, the pulse or waste valve and seating
for same, are made of metal, thus when the valve is thrown more or less
violently, as is the case, against its seating the noise, due to the metal surfaces
coming together, reverberates along the piping conveying the water to the point
of delivery where it is distinctly and objectionably heard.
According to my invention instead of using a metal valve I make it (the valve)
of indiarubber, or any such like suitable resilient material, and fit same in
the following manner.
At the orifice of the waste pipe I fit and secure a metal plate and at the underside
of the said plate the valve, in the form of a flat ring, the inner edge or part of
which is free to act as, and for the purpose hereinafter described.
The underside of the metal plate aforesaid forms the seating for the valve and is
concave in shape, or approximately so, and there are openings or ports provided
in same immediately over the free part of the valve.
The action of the whole is as follows:-
The water in its passage through the ring valve, that is through the hole in the
centre of same, and also the water pressure on the back of the valve, causes the
inner free part of same to lift and to take its seating at the underside of the
aforesaid plate when the valve is thus forced into its seating the ports in the plate
are consequently closed until the recoil of water in the ram body and injection
pipe brings the valve back, thereby uncovering the ports, the operation being
regularly repeated during the working of the ram, and with the minimum of noise
by reason of the valve being made of resilient material.
To adjust the valve so that any required quantity of water can be passed through
same I fit the following devices.
On the top of the metal plate I form or attach a boss in which I fit, lengthways
of same, a spindle, upon the lower end of the spindle, I attach or form radial arms
or a perforated mushroom shaped plate, or of a form approximating to same: the
top of the spindle is screw threaded and fitted with a nut which when screwed down
on to the top of the boss forms a watertight joint, thus preventing any water
escaping at the top of the spindle hole at the top of the boss.
The spindle is fitted so that the under inner edge of the ring valve normally
rests on the top of the radial arms or plate on the lower end of the spindle.
To keep the nut in its watertight seating and the spindle and its attachments
from jumping up and down with the valve, I fit over the spindle top a screw cap
which works on a thread formed on the sides of the boss, this cap when screwed
down on the top of the spindle prevents any up and down motion of the latter.

page_text: To set the valve to waste any desired quantity of water it is only necessary to
remove the screw cap and adjust the spindle by means of its nut.
The lifting of the spindle lifts the free inner part of the ring valve the radial
arms or plate on the spindle bearing same up thereby closing the passage more or
less between the top of the valve and its seating and consequently reducing the
outflow of waste water, and upon screwing down the spindle the passage is opened
to the desired extent.
Waste valves made and fitted according to my invention can be fitted to any
known existing type of hydraulic ram no matter in what position the waste outlet
lies.
COMPLETE SPECIFICATION.
Improvements in or relating to Hydraulic Rams.
.I, ROBERT CHARLES GREEN, of 40, Hyde Street, Winchester, in the County of
Hants, 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:
My invention relates to hydraulic rams.
The main object of my said .invention is to mitigate the noise made by the
pulse or waste valve of a hydraulic ram when in action.
In hydraulic rams as now ordinarily made, the pulse or waste valve and scating
for same
are made of metal, thus when the valve is thrown more or less
violently, as is the case, against its seating the noise due to the metal surfaces
coming together reverberates along the piping conveying the water to the point
of delivery where it is distinctly and objectionably heard.
According to my invention instead of using a metal pulse valve I make it (the valve)
of indiarubber, or any such like suitable resilient material, and fit same in
manner hereinafter described.
In the accompanying drawings I have shewn what I consider to be the best
means of carrying out my said invention in which ;-
Fig. 1 is a vertical central section,-taken on the line a, a, of my complete
apparatus shewing the waste or pulse valve and how it is fitted for use with a
hydraulic ram.
Fig. 2, a plan on top of Fig. 1.
Like letters indicate corresponding parts throughout the drawings.
In carrying out my invention I fit over the delivery end of the waste pipe A, a
circular plate B formed as shewn in Figs. 1 and 2, and suitably secure same to the
flange C, of the waste pipe.
The pulse or waste valve, D is in the form of a ring of indiarubber, or other
suitable resilient material, and is fitted in the plate B and held there in position
by means of the metal ring E.
In the coned or approximately coned, shaped recess F, formed in the plate B,
I provide any convenient number of ports G, G.
On the crown of the plate B, I form or attach a boss Hi in which I fit a spindle J,
and upon the lower end of the spindle I attach or form radial arms K, K, the
top of the spindle J is screw threaded and fitted with a nut L which when screwed
down on the top of the boss H forms a watertight joint, thus preventing any water
escaping at the top of the spindle hole.

page_text: The spindle is adjusted so that the under inner edge of the ring valve D
normally rests on the top of the radial arms K, K.
To keep the nut L in its watertight seating and the spindle from moving up and
down with the valve when in action, I fit over the spindle top a screw cap M
which works on a thread formed on the sides of the boss, this cap when screwed
down on the top of the spindle obviously prevents any up and down motion of the
latter.
The action of the whole is as follows:- ན་
The water in its passage through the ring valve D, (that is through the hole in
the centre of same) and also the water pressure on the back of the valve, causes
the inner free edge or part of same to lift and to take its seating at the underside of
the crown of the plate B, thereby covering and closing the ports G, G, until the
recoil of water in the ram body and injection pipe brings the valve back thereby
uncovering the ports, the operation being regularly repeated during the working of
the ram and with the minimum of noise by reason of the valve being made of
resilient material.
To set the valve to waste any desired quantity of water it is only necessary to
remove or unscrew the screw cap M and adjust the spindle J by means of
its nut L.
The lifting of the spindle lifts the free inner part of the ring valve the radial
armis K, K, bearing same up thereby closing the passage more or less as required
between the top of the valve D and the underside of the crown of the plate B
and consequently reducing the space or area for the passage of waste water; and
upon screwing down the spindle the area for the passage of water is again increased
to the desired extent.
Waste valves made and fitted according to my invention can be used with any
known existing type of hydraulic ram, no matter in what position the waste
outlet is.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1st. For a hydraulic ram, the improved apparatus consisting of the parts all
constructed and combined substantially as described with reference to the
accompanying drawings and operating as, and for the purposes specified.
2nd. For a hydraulic ram the use of a resilient waste or pulse valve D as, and
for the purpose specified.
3rd. The ring valve 1 fitted and arranged in the plate B as shewn to allow of
the escape and cut off of the waste water substantially as described.
4th. For a waste valve for a hydraulic ram the arrangement for adjusting the
valve to waste any desired quantity of water, comprised in the radial arms K, K,
operated by the screw spindle J, substantially as described as herein specified with
reference to the accompanying drawings.
Dated this 11th day of February 1800
ROBERT CHARLES GREEN.
Herbert P. Blake,
Chartered Patent Agent,
70, High Street, Southampton, Agent for the Applicant.