Improvements in Rotary Pumps, the Improvements being also applicable to Rotary Engines or Motors.
Year: 1893

page_text: Date of Application, 28th Feb., 1893-Accepted, 24th Feb., 1894
COMPLETE SPECIFICATION.
Improvements in Rotary Pumps, the Improvements being also
applicable to Rotary Engines or Motors.
JOHN WILLIAM HOLLAND 10 Sparsholt Road Crouch Hill London N.
Engineer and WILLIAM ERNEST HERBERT HOLLIS 3 Russell Terrace, Lincoln
Road, Enfield in the County of Middlesex, Mechanic, 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 to pumps of the rotary type in which a cylinder.or drum
fixed upon a spindle, situated eccentric to its axis, is made to rotate or travel round
within a case or body: the spindle being concentric with the interior of the body:.
a movable tongue or clack being employed to divide the interior of the case or
body into two chambers one of which is the suction chamber and the other the
compression chamber.
This improved pump comprises parts as follows: a case or body, for containing
working parts of pump, provided with inlet and outlet ports, a spindle to which the
drum or eccentric is fixed or attached, a moveable tongue or clack, the position of
which in the case or body (hereinafter called the barrel) is controlled by the
eccentric, and in a single form of pump, a spring for adjusting the pressure of
tongue on eccentric.
In another modification the inlet port is formed in the axis of the tongue or
clack.
When these pumps are used in a double form the eccentrics or drums of both
pumps (excepting that shown on Sheet 6 in which the spindle is divided) are fixed
upon one and the same spindle but at exactly opposite angles one to the other
and the tongues also occupy relatively different positions, each one doing duty of
stroke at a different point to the other during the rotating of the drums or eccentrics;
the spindles fixed in the tongues or clacks are connected by levers and rods or
other suitable arrangement so as to cause a reciprocal action between the tongues
and thus ensure a constant pressure of both tongues to be exerted upon each drum
or eccentric respectively during the whole of their revolutions.
The improvements are clearly shown in the annexed drawings and also certain
modifications both in the arrangements and their method of action.
Fig. 1 Sheet 1 shows a section and Fig. 2 shows a plan of one form of rotary pump
according to our invention. A is the case or body of pump, B is the eccentric or
drum, C is the tongue or clack with moveable bearing strip R at end, D is the
suction port, E is the delivery port, F is the spindle to which eccentric or drum is
attached. The spindle F is brought through either or both of the side covers of
the barrel A and made air or liquid tight with a simple gland and left long enough
for a handle wheel or pulley to be fixed on for the purpose of driving the pump as
shown at F in Fig. 2 Sheet 1. When the spindle is carried through one only of
G is the
the covers the opposite end is carried by a recess in the opposite cover.
joint of tongue or clack having a pin fitted in one side and brought through the
cover with a small gland in a similar manner to the eccentric spindle as shown at S
Fig. 2 Sheet 1. The end of the spindle opposite to the gland is likewise carried by
a recess made to receive it in the opposite cover. The appliance shown at Fig. 3
Sheet 4 is attached to this spindle. T is the sole plate to support the pump.
Figures 1 and 2 Sheet 2 represent section and plan of a modification of my
improvements which consists in making the suction port through the joint or axis

page_text: of tongue. A shows the barrel of pump, B is the eccentric or drum C is the tongue
or clack, D is the suction port, E is the delivery port, F is the spindle to which
eccentric or drum is attached, G is the joint of tongue or clack; all as hereinbefore
described with reference to Figs. 1 and 2 Sheet 1.
Fig. 3 Sheet 4 shows in detail the arrangement of spring in a single form of
pump for keeping the tongue in such a position as to always press tightly upon the
eccentric or drum throughout the whole of its revolutions. G is the joint of the
tongue or clack, the spindle of which passes through the cover as in Fig. 2
Sheets 1 & 2. H is a lever arm secured upon the spindle S and jointed to a con-
necting arm I placed at a suitable angle to give motion to H; K is a small piston
rod with piston J secured at end moving in a metal cylinder M and working against
a coiled spring U enclosed in the cylinder M and butting against the closed end of
the cylinder through which the piston rod slides.
The action of the arrangement for pumps hereinbefore described is as follows:
The eccentric or drum is driven by the spindle F by any suitable means of power
in the direction shown by arrows upon Fig. 1 Sheets 1 & 2, this causes the water
to be drawn through suction port D and delivered through outlet E as shown in the
several sheets of drawings, the same letters corresponding and indicating similar
parts.
Figs. 1 & 2 Sheet 4 show an arrangement for coupling together any of the
hereinbefore described single acting pumps so as to form a double acting pump.
The driving spindle Figure 1 passes through both pumps and carries both drums
or eccentrics, both pumps being driven together by the pulley X. When the
pumps are coupled in this manner the cylinders or drums are diametrically opposed
to each other as hereinbefore described and they consequently balance each other.
The levers of the tongues or clacks in each pump are also coupled up by means of
. cranks Y & Y Figures 1 and 2 which are fixed one on each projecting end of the
spindles S and S which actuate the tongues or clacks, W is a connecting rod which
couples the 2 cranks together and gives a reciprocating motion to the two tongues
or clacks when the drums or eccentrics are rotated through the spindle F. The
delivery outlets Z¹ and Z' are connected together by a pipe piece N and deliver at
the outlet Z. The pumps so coupled also stand on one base plate together as
. shown.
In another arrangement for coupling two pumps we place the pumps upon one
sole plate but we bring them close together as shown in Fig. 2 Sheet 5 with only
one cover or partition K* between them. The drums or eccentrics are secured to
and carried on one shaft or spindle, see Sheet 4 as herein before described,
diametrically opposed, so that they may balance each other. The tongues or
clacks are worked in the following manner, the spindles G and G* of the tongues
or clacks are each connected by a crank or lever arm H and a connecting rod L
to a pivoted lever M* as shown in plan in Fig. 2 Sheet 5. The pivot upon which
the lever M sways or oscillates is arranged at the top of a pillar N fixed in the
sole plate or it may be carried on a bracket or other support fixed upon any
convenient part of the pump body or barrel. This arrangement of arms, rods and
lever gives a reciprocating motion to the 2 tongues or clacks when the drums or
eccentrics are rotated as hereinbefore described. This arrangement of arms, rods
and lever for working two pumps in unison may be employed in the case of 2 pumps
as are shown in Figs. 1 and 2 Sheet 4 in lieu of the system of levers there shown
between them.
Fig. 3 Sheet 5 shows one method of fixing the cover or partition K* by firmly
and tightly bolting it between the flanged ends of the 2 barrels so that it is air and
liquid tight.
+
Figures 1 and 2 on Sheet 6 show, in a double form, another modification of our
invention which as will be understood may be also used in a single form, A is...
the case or body of pump, which is shown in drawing made in two parts A' A being
the joint, B, B are the eccentrics or drums, B', B', B₁ are discs to which the

page_text: drums or eccentrics are attached in any suitable way, screws B are shown on
drawing for this purpose, A' A' are loose covers of pump which are fixed to the
case or body of pump by bolts, studs or the like, F, F show spindles or shafts
which in this modification do not pass through the body of pump, but are fitted in
any proper manner to the 2 outer discs of pump, or the disc and spindle may be
cast or made in one piece, F shows a form of gland for packing the spindles, C is
the tongue or clack with moveable bearing strip R at end, R is a groove in disc
and around eccentric in which the bearing strip R works, G is the joint of tongue
or clack, R' shows grooves in the case or body in which the discs work or revolve,
packing of any suitable material may be placed in these grooves if necessary. It
is not essential to these improvements that the discs, drums and shafts shall be made
separately as the discs, drums and spindles or shafts may be cast or made together
or any parts thereof may be so cast or made together. Fig. 3 on the same sheet
shews a plan of one eccentric B, one disc B¹, one tongue C with moveable bearing
strip R at end and joint G all properly fitted together.
The other several parts of these pumps and their method of working are the
same as in the pumps already described herein.
These pumps may be employed as rotary engines in which case the suction
port D would be utilized as the inlet for steam from a generator and the delivery
port E would be used for the exhaust or eduction port, this would cause the
eccentric B to be rapidly rotated within the barrel A. carrying with it the spindle F
and pulley X from which pulley motion could be communicated by means of
gearing, belts, ropes or the like.
Fig. 1 Sheet 3 shows a sectional elevation of another modification of our
invention as applied to rotary engines. Fig. 2 is a section on the line ab Fig. 1.
Fig. 3 shows a plan of the rotary engine. A shows the barrel of rotary engine,
B is the eccentric or drum, C is the tongue or clack attached by a joint C¹ to the
eccentric, D is the inlet port, E is the exhaust or eduction port, F is the spindle or
shaft to which a crank F¹ is attached within the eccentric or drum inside the
rotary engine.
The end of this crank engages with and turns upon a crank pin F' fixed in the
centre of the web H in the eccentric or drum, shown in plan in Fig. 2 Sheet 3. One
or more radial arms may take the place of the web H it preferred, G is the joint
upon which the tongue or clack vibrates, T is the sole plate. The inlet for
steam D is separated from the delivery port E by means of the moveable tongue or
clack C. The action of this arrangement of rotary engine is similar to that already
described herein. The eccentric travels round the barrel A without itself revolving
upon its axis. Its axis describes a circle having the spindle F for its centre and
the joint C¹ describes an arc having the joint G for its centre.
communicated from the crank pin F through the crank F' to the spindle or
shaft F.
Motion is
Means for lubricating the several parts can be provided in any convenient
manner.
It is obvious that the configuration of the several elements illustrated in the
drawings may be varied without altering the invention.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is-
1. The combination of parts arranged and operating in the manner substantially
as hereinbefore described and illustrated in the accompanying drawings constituting
a pump or a motor whether in the single form or in the double form.
2. The combination of the tongue or clack C with an eccentric, drum or cylinder
such as B when arranged and operating in the manner substantially as hereinbefore
described and illustrated in the accompanying drawings.
3. The tongue or clack C operating in the manner hereinbefore described and
illustrated in the accompanying drawings.

page_text: 4. The combination of the tongue or clack C with the barrel A when arranged
and operated in the manner substantially as herein before described and illustrated
in the accompanying drawings.
Dated this 28th day of February 1893.
JOHN WILLIAM HOLLAND.
WILLIAM ERNEST HERBERT HOLLIS.'