Improvements in Oscillating Piston Pumps.
Year: 1888

page_text: Date of Application, 22nd Aug., 1888
Complete Specification Left, 22nd May, 1889-Accepted, 6th July, 1889
PROVISIONAL SULFLATION.
[Communicated from abroad by ADOLPHE VERMERSCH, of Lille, in the Republic of
France, Mechanician.]
Improvements in Oscillating Piston Pumps.
I, JOHN ARMYTAGE BATLEY of 1 Elvaston Place, Queen's Gate, in the County of
Middlesex, Barrister-at-Law, do hereby declare the nature of this invention to be as
follows
1
This invention relates mainly to improvements in double-action oscillating piston
pumps, the object being to render them more efficient, and also improve and simplify
their construction. It applies not only to pumps suitable for raising water and other
liquids in large quantities, but also to the delivery, to retail purchasers, of Beer from
casks, the same being mixed in the act of raising, when so desired.
The case in which the oscillating piston works, consists of a semi-cylindrical flanged
casting, with a neck at bottom for connecting with a suction pipe. The oscillating
piston is composed of two leaves set at an angle to each other, and joining at the
centre of oscillation, the position of which corresponds with the centre of the curve of
the cylinder. The leaves of this piston are each furnished with a hinged valve, which
valves open and close alternately as the piston oscillates. Fitting as a cover on this -
seni-cylinder, is a plate in which are two valve seats fitted with check valves on
opposite sides of the centre of oscillation of the piston. These check valves, as the
liquid is forced up by the leaves of the oscillating piston, alternately rise to pass the
liquid so forced up, and close to retain it. Above this valvo plate is fitted a tapering
casting, which terminates in a discharge pipe. This casting has two side openings or
man-holes, which are closed watertight, and are for the purpose of giving ready access
to the valves in the valve plate. and in the piston. The ends of the piston (which move
in the arc of a circle) are grooved to make an hydraulic packing, and so also are the
sides of the piston, no other packing being required to retain the liquid above the
piston during the action of the pump.
This arrangement of pump provides for the free inflow of liquid to the underside of
the piston, and for the admission of the same alternately to two chambers formed by
the oscillating piston and the valve plate.
In order to set the pump in action, it is only necessary, by means of a hand lever,
to oscillate the piston; the liquid will then rise through the depressed leaf of the
piston, and as that leaf is moved upwards, its valve will close, and the liquid filling the
space between that leaf and the valve plate, will be forced upwards through the
valve plate, the valve of the other leaf meanwhile opening to admit liquid, which is, at
the next oscillation, forced, in like manner, out of the second chamber to the upper side
of the valve plate. The delivery pipe may be furnished with a poppet valve for
retaining the liquid forced up into the delivery pipe. The pump may be so arranged,
when desired, that by putting the hand lever in a certain position, the liquid (when the
pump is at rest) will drain away, and thus leave the semi-cylindrical case empty. It
will not, however, be necessary, when restarting the pump, to charge it first with
liquid.
In adapting pumps of the above-described construction to the use of retailers of
Beer, the pumps are arranged in duplicate, and so that one, or other, or both, may be
worked by the same pump handle. The cases of these pumps may conveniently be
made spherical, the supply pipe being connected with a neck at bottom, and the
delivery pipe by a neck at top of the case. The spherical case may be cast in two
flanged pieces, and a valve plate interposed between them. The axles of the two
oscillating pistons are brought into line to receive, on their adjacent ends, a sleeve
carrying a fulcrum pin, which couples the sleeve to the pump handle. The rocking of

page_text: this handle is intended to oscillate one or other, or both, of the pistons, as may be
required for this purpose, there is keyed to the axle of each piston an arm which
terminates in a slotted extension standing at right angles to the arm. Between the
slotted extension of the two arms, plays the pump handle, which, when held inter-
mediate of the two slotted extremities of the arms, will operate both, and oscillate both
pistons. When, however, this handle is shifted to the right or left, it will engage
with one only of the arins, and so rock but one piston, setting but one pump in
action. The supply pipes of the two pumps are connected, say, the one with an ale
harrel, and the other with a porter barrel, and the necks for delivering the liquids from
the pumps are coupled to one and the same swan necked pipe, which is divided for a
portion of its length for discharging one or other of the liquids, as desired, or both
may be mingled together in the discharge pipe.
By introducing a friction connection between the pump handle and the axles of the
oscillating pistons, or some equivalent coupling contrivance, the proportions of the
liquids drawn from the two casks simultaneously may be varied at pleasure.
Dated this 22nd day of Angust. 1888
COMPLETE SPECIFICATION.
Improvements in Oscillating Piston Pumps.
I JOHN ARMYTAGE BATLEY of 1 Elvaston Place, Queen's Gate in the County of
Middlesex, Barrister-at-Law, 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 :-
This invention relates mainly to improvements in double action oscillating piston
pumps, the object being to render them more efficient, and also improve and simplify
their construction. It applies not only to pumps suitable for raising water and other
liquids in large quantities, but also to the delivery, to retail purchasers, of Beer from
casks, the same being mixed in the act of raising when so desired.
I will first describe the double-action pump as constructed for use on ship board, in
which it is essential to prevent, as far as possible, obstruction to the free working of
the pump, from the admission thereto of extraneous matters carried in by the draught
of water. I am aware that oscillating piston pumps have heretofore been devised,
but for some cause, possibly their liability to choke, their merits have not been
appreciated.
By the present invention, free access of the inflow to the pump casing is provided,
and a ready access to the valves of the pump to clear them of any obstructions is
also provided.
In the accompanying drawings, Fig. 1 is a vertical section of a double action pump
constructed according to this invention, and adapted for use on ship board.
A A is the case in which the oscillating piston B works. This case consists of a
semi-cylindrical flanged casting, with a neck at bottom for connecting with a suction
pipe A'. The oscillating piston is composed of two leaves set at an angle to each
other, and joining at the centre of oscillation, the position of which corresponds with
the centre of the curve of the semi-cylindrical case. The piston is keyed to a
horizontal axle C, mounted in bearings in the sides of the casing A, and to the axle
are fitted hand levers C₁ for operating the pump.
The leaves of the piston B are each furnished with a hinged valve bb, which valves
open and close alternately as the piston oscillates. Fitting as a cover on this semi-
cylinder, is a plate A2, in which are two valve seats fitted with check valves a a, on
opposite sides of the centre of oscillation of the piston B. These check valves, as
the liquid is forced up by the leaves of the oscillating piston, alternately rise to pass
the liquid so forced up, and close to retain it. Above this valve plate is fitted a
tapering casting D, which terminates in a discharge pipe D₁. This casting has two
side openings, or man-holes, which are closed watertight by man-hole covers D2 D².

page_text: These covered openings are for the purpose of giving ready access to the valves in
the valve plate and in the piston. The ends of the piston (which move in the arc of
a circle) are grooved to make an hydraulic packing, and so also are the sides of the
piston, no other packing being required to retain the liquid above the piston during
the action of the pump.
This arrangement of pump provides for the free inflow of liquid to the underside
of the piston, and for the admission of the same alternately to two chambers formed
at the opposite sides of the centre of motion, between the oscillating piston and
the valve plate.
In order to set the pump in action, it is only necessary, by means of hand levers C³,
to oscillate the piston; the liquid will then rise through the depressed leaf of the
piston, and as that leaf is moved upwards, its valve will close, and the liquid filling the
space between that leat and the valve plate, will be forced upwards through the
valve plate A, the valve of the other leaf meanwhile opening to admit liquid, which
is at the next oscillation forced in like manner out of the second chamber to the
upper side of the valve plate. The drawing shows the delivery pipe furnished with a
poppet valve d, for retaining the liquid forced up into the delivery pipe.
In adapting oscillating piston pumps (according to this invention) to use of retailers
of beer, the pumps are arranged in duplicate, and are made single acting, the object
of the grouping being to work one or other or both pumps by the same pump
handle, and thereby to deliver two qualities of ale, or ale and porter, as desired, in one
stream, or one or other of the two beverages supplied to the pumps.
Fig. 2 is a sectional elevation of a single acting pump of the kind which I propose
to use in duplicate for the objects just indicated.
Fig. 3 shews in plan view two of such pumps connected together according to
the principle of the invention.
Fig. 4 is a front elevation, and Fig. 5 a side elevation, of the same arrangement
of grouped pumps, which are to be worked simultaneously or separately, as desired,
by the use of a hand lever common to both. These figures are on a somewhat
smaller scale than Fig. 3.
Fig. 6 is a sectional view taken in the line 1, 2 of Fig. 3. illustrating an efficient
mode of locking together the axles of the two oscillating pumps.
The cases of these pumps may conveniently be made semi-spherical, as shewn at
A A, Figs. 2, 4 and 5, the supply pipes A¹ being connected with a neck at bottoin,
and the delivery pipes D by a neck at top of the cases. The delivery pipes D connect
with a pipe Di, which is formed with a longitudinal partition extending up to the
discharge mouth or nozzle, and it is at opposite sides of this partition that the
pipes D respectively connect with the delivery pipe D'. The semi-spherical case is
preferably cast in two flanged pieces, the valve plate A being interposed between
then. The axles CC of the oscillating pistons B are brought into line to receive, on
their adjacent ends, a sleeve E, which serves as a support for the fulcrum pin of a
hand lever F. The rocking of this handle is intended to oscillate one or other, or
both, of the pistons, as may be required; for this purpose there is keyed to the axle
of each piston an arm C, which terminates in a slotted extension standing at right
angles to the arm. Between the slotted extension of the two arms plays the pump
hand lever F, which, when held intermediate of the two slotted extremities of the
arms, as shown in Figs. 3 and 6, will operate both, and oscillate the pistons of both
pumps. When, however, this hand lever is shifted to the right or left (as indicated
by the dotted lines of Fig. 3), it will engage with one only of the arms, and so rock
but one piston, thereby setting but one pump in action. Supposing the supply
pipes of the two pumps to be connected the one, say, with an ale barrel and the
other with a porter barrel, one or other of the liquids may be delivered, as desired,
from the delivery pipe D', by first shifting the hand lever F to one or other of the
dotted positions of Fig. 3, or both liquors may be mingled together either in the
discharge pipe or in the receiving vessel applied to the discharge pipe, by first
shifting the hand lever F to the drawn position of Fig. 3, and then working the
pumps by means of that handle.

page_text: From the foregoing it will be obvious that the locking of the axles of the
oscillating piston pumps together may be effected in other ways than that shewn at
Figs. 3 and 6. I do not, therefore, limit the improvement in beer pumps to the form
of locking device described.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, 1 declare that what I claim is :-
1. The arrangement of double action oscillating piston pump as above described
(having the check valves above the piston), whereby the liability of such pump to
choke and become useless on an emergency, is mitigated or avoided.
2. Coupling oscillating piston pumps as described, for the purpose of working them
singly or in duplicate, as above set forth.
3. The arrangement of coupling mechanism for oscillating piston pumps as described
with reference to Figs. 3, 4, 5, and 6 of the drawings.
Dated this 21st day of May 1889
NEWTON & SON,
Agents for the Applicant.