Improvements in the Method of and Apparatus for Stopping the Action of Pumps connected with Accumulators for Working Hydraulic Presses or the like
Year: 1897

page_text: Date of Application, 16th Feb., 1897
Complete Specification Left, 15th Nov., 1897-Accepted, 18th Dec.,
1897
PROVISIONAL SPECIFICATION.
"Improvements in the Method of and Apparatus for Stopping the
Action of Pumps connected with Accumulators for Working
Hydraulic Presses or the like."
I JOHN WILLIAM GARRETT, of York Street, Hull in the County of Yorkshire,
Oil press wrapper Manufacturer do hereby declare the nature of this Invention to
be as follows;
-
The object of my invention, is to provide a new or improved method of, and
means for stopping the working of the pump or pumps which supply the liquid
to accumulators, for working oil cake or other similar hydraulic presses for the
purpose of suspending the action of the said pump, when the accumulator has
risen and put the full pressure on the press, so preventing wear and tear on the
pump when it is not actually effecting any work in connection with the press.
Hitherto when the press has been stopped for discharging and re-filling, the
pump has gone on pumping, but the liquid has been carried away by means of
a relief valve, all the same the pump has been in action, thus being subjected to
great wear and tear when it was not doing any actual work, with my invention.
this is entirely obviated, as when the accumulators rise to a certain height, it
stops the action of the pump, which is at rest until such accumulators are set to
work again.
For the purpose of my invention, I place a vertical spindle or pin, in the
bottom of the pump cylinder, this spindle or pin passes up the inside of such
cylinder, and is connected at its top end to a rod or piston, such rod or piston
bearing on the underside of the bottom valve of the pump, the bottom end of
the aforesaid pin or spindle rests on the preferably bent end of a pivotted lever,
which is weighted or made heavier at the opposite end to the end on which the
said vertical pin or spindle rests.
To the weighted end of the lever, I connect a chain rope or the like, which
passes upward over a pulley, the end descending over the top of the accumulator,
the end of such rope chain or the like having a weight attached, such weight being
suspended a suitable distance above the top of the accumulator.
If desired, in place of the end of the rope and the weight being suspended over
the top of the accumulator, a weighted pivotted lever may be placed in any suitable
position, and a projection may be formed on the accumulator so that as such
accumulator rises, the projection rises and tips the pivotted lever, when the effect
is the same as having a weight at the end of the rope as before described.
The action is as follows:-As the accumulator rises, it raises the weight on the
pivotted lever, the rope connected thereto runs slack, and allows the pivotted lever
which acts on the vertical pin or spindle, to drop, this tilts the pivotted end of
such lever up, thus pushing the vertical pin or spindle up the inside of the pump
cylinder, such pin pushing up the rod. which in turn pushes up the bottom

page_text: valve of the pump; off its seat, which throws the pump out of action thus prevent-
ing it working.
Dated this Thirteenth day of December 1897.
JOHN E. WALSH.
Savile St. Hull and Crossley St. Halifax.
Patent Agent for the Applicant.
"
Improvements in the Method of and Apparatus for Stopping the
Action of Pumps connected with Accumulators for Working
Hydraulic Presses or the like."
I JOHN WILLIAM GARRETT, of York Street, Hull, in the County of Yorkshire,
Oil press wrapper Manufacturer, 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:-
The object of my invention is to provide a new or improved method of and
means for stopping the action of the pump or pumps which supply the liquid to
accumulators for working oil cake or other similar hydraulic presses, cranes or
the like, for the purpose of suspending the action of the said pump when the
accumulator has risen and put the full pressure on the press or the like, so pre-
venting wear and tear on the pump when it is not actually effecting any work in
connection with the press.
Hitherto, when the press has been stopped for discharging and re-filling, the
pump has gone on pumping, but the liquid has been carried away by means of
relief valves, all the same, the pump has been in action, thus being subjected to
great wear and tear when it was not doing any actual work; with my invention,
this is entireley obviated, as when the accumulators rise to a certain height, they
stop the action of the pump, which is at rest until the accumulators are set to
work again, that is, although the plunger is moving there is no pumping of the
liquid.
DESCRIPTION OF DRAWINGS.
The accompanying drawing shows vertical elevation of a pump cistern with,
cylinder and accumulator, having my improvements applied, the pump cistern and
cylinder being partly in section, the pump being drawn to a larger scale than the
accumulator for the purpose of better showing the valves and internal parts.
For the purpose of my invention, I place a vertical spindle or pin A, in the
bottom of the pump cylinder, this spindle or pin A passes up the inside of such
cylinder, or such cylinder may have a tail pipe B screwed or otherwise attached
to it, the said tail pipe being provided at its bottom end with a rose C, the
spindle passes up one of the holes in the said rose and is connected at its top end
to a rod or piston D), or the piston may simply rest on the spindle or pin A, such
rod or piston D hearing on or touching the underside of the bottom valve E of
the pump, the said piston D having flats on it for the passage of the liquid, the
bottom end of the aforesaid pin or spindle A rests on the preferably bent end of a
pivotted lever F, which is mounted in a bracket or the like G placed in the pump
cistern P preferably directly under the pump cylinder or tail pipe B before men-
tioned, the said lever F is weighted or made heavier H at the opposite end to the
end on which the said vertical pin or sjindle A rests.
To the weighted end of the lever, I connect a chain, rope, or the like J which
passes upward over a pulley or pulleys K, the end descending over the top of the

page_text: accumulator L, the end of such rope chain or the like having a weight or
weights M. attached, such weight being suspended a suitable distance above the
top of the accumulator to allow of it being raised just at the proper time to stop
the action of the pump.
If desired in place of the end of the rope and the weight being suspended over
the top of the accumulator, a weighted pivotted lever N, as shown in dotted lines
may be placed in any suitable position, and a projection O, also shown in dotted
lines, may be formed on the accumulator, so that as such accumulator rises the
projection Orises with it and tips the pivotted lever N, when the effect is the
same as having a weight at the end of the rope as before described.
The pulleys K may be placed in any suitable position and fixed in any suitable
manner.
The action is as follows:-As the accumulator rises, it raises the weight or the
pivotted lever, the rope connected thereto runs slack and allows the pivotted lever
which acts on the vertical pin or spindle, to drop, this tilts the pivotted end of such
lever up thus pushing the vertical pin or spindle up the inside of the pump cylinder,
such pin pushing up the rod, which in turn pushes up the bottom valve of the
pump off its seat, which throws the pump out of action thus preventing it work-
ing.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is.
1 Actuating or lifting the spindle or pin A for lifting the valve E off its seat,
by means of a pivotted weighted lever F, worked by a rod, chain, rope or the like J,
having a weight M at its end, which weight is lifted by the accumulator in the
manner and for the purposes substantially as shown and described.
2 Actuating or lifting the spindle or pin A, by means of the pivotted weighted
lever F, worked by a rod, chain, wire rope, or the like J, connected to a second
pivotted lever N, operated by a projection O on the accumulator, in the manner
and for the purposes, substantially as shown and described.
Dated this
JOHN E. WALSH,
Savile Street Hull and Crossley Street, Halifax.
Patent Agunt for the Applicant.