Improvements in Semi-rotary Wing Pumps and the like.
Year: 1895

page_text: Date of Application, 23rd Feb., 1895
Complete Specification Left, 21st Oct., 1895-Accepted, 7th Dec., 1895
PROVISIONAL SPECIFICATION.
Improvements in Semi-rotary Wing Pumps and the like.
I, WALTER HENRY WILLCOX, of 34, Southwark Street, London, S.E.
Engineer, do hereby declare the nature of this invention to be as follows:-
Pumps used for drawing off oil, spirit, or other liquids from a cask or vessel, and
forcing or delivering the same into another receptacle are liable to retain more or
less of the liquid after use in the pump itself or its connections and the object of
the present invention is to provide means for overcoming this drawback.
This invention is especially applicable to semi-rotary wing pumps of the type
known as the Willcox Improved Farringdon Pump, but it may also be applied to
other types in which it is desirable to provide means for discharging the liquid
retained in the pump or its connections after use.
For this purpose I provide a device consisting essentially of a lever arranged to
lift the valves of the pump and thus admit the air, controlled by a spindle passing
through the face plate to the back of the body of the pump preferably near the
suction or at any convenient point. The lever aforesaid is actuated by turning the
spindle preferably from left to right, causing the lever to lift the suction valve by
passing through the orifice of it.
On the top of the suction valve is fixed a lug or pin arranged to pass through
the orifice of the delivery valve thereby lifting it, and allowing the liquid in the
pump and pipes to run back and empty 'the same.
Dated this 21st day of February 1895.
W. P. THOMPSON & Co.,
31, High Holborn, London, W.C., Agents for the Applicant.
Improvements in Semi-rotary Wing Pumps and the like.
I, WALTER HENRY WILLCOX, of 34, Southwark Street, London, S.E.
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 :-.
Pumps used for drawing off oil, spirit, or other liquids from a cask or vessel, and
forcing or delivering the same into another receptacle are liable to retain more or
less of the liquid after use in the pump itself or its connections and the object of
the present invention is to provide means for overcoming this drawback.
This invention is especially applicable to semi-rotary wing pumps of the type
known as the Willcox Improved Farringdon Pump, but it may also be applied to
other types in which it is desirable to provide means for discharging the liquid
retained in the pump or its connections after use.
For this purpose I provide a device consisting essentially of a lever arranged to
lift the valves of the pump and thus admit the air, controlled by a spindle passing
through the face plate to the back of the body of the pump preferably near the
suction or at any convenient point. The lever aforesaid is actuated by turning
TD037

page_text: the spindle preferably from left to right, causing the lever to lift the suction valve
by passing through the orifice of it.
On the top of the suction valve is fixed a lug or pin arranged to pass through
the orifice of the delivery valve thereby lifting it, and allowing the liquid in the
pump and pipes to run back and empty the same.
I will now proceed to describe my invention with reference to the accompanying
drawing in which the pump is represented in side elevation, the portion of the
outer casing which overlies the valves being broken away to shew the valve lifting
mechanism.
A is the main shaft of the pump to which the pumping handle or actuating
device for working the pump (not shewn) is attached as also the wings or blades F.
The suction pipe is attached at C and the exit at D.
The wing F is provided with an opening covered by the lifting valve G. The
fixed partitions B B separate the interior of the pump into two compartments and
each is provided with an aperture covered by the valve E.
The aforesaid valve E bears on its upper surface a pin or projection H so
adjusted and of such length that when the wing is in the position shewn in the
drawing H will enter the aperture of F but without touching the valve G.
For the purpose of opening the valves, a suitable handle or knob N is attached
between the partitions B, B, preferably at the back of the pump, to a shaft or
spindle X passing through the casing and bearing at its inner end a bar or pro-
jection Y. When the handle N is turned in one direction the bar Y is pressed
against the valve E, raising the same, and the valve E in turn raises the valve G
by means of the projection H. There is thus established an open passage
throughout the apparatus, and any liquid remaining in the body of the pump or in
the pipes connected to it. flows back into the cask or vessel from which it has been
drawn. The same result on the other wing is attained by turning the knob Z the
reverse way.
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. In semi-rotary wing pumps, adapted for the raising of valuable liquids the
method of completely releasing the liquid contained therein by raising the valve of
the fixed partition by means of an internal rod attached to a spindle actuated by a
kuob or handle outside the casing, in combination with a projection upon the upper
surface of the said valve which simultaneously raises the valve in the wing or
movable partition.
2. The combination of parts forming the improved semi-rotary wing pump with
releasing mechanism. substantially as above described and illustrated in the
accompanying drawing.
Dated this 21st day of October 1895
W. P. THOMPSON & Co.,
31, High Holborn, London, W.C., Patent Agents for the Applicant.