Improvements in Pumping Engines.
Year: 1888

page_text: Date of Application, 28th Sept., 1888
Complete Specification Left, 22nd July, 1889-Accepted, 31st Aug.,
1889
PROVISIONAL SPECIFICATION.
Improvements in Pumping Engines.
I, FREDERICK WILLIAM WALKER of the Firm of Messrs. Tannett Walker & Co.,
Leeds, Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has for its object improvements in pumping engines.
I connect the ram of the pump directly with the piston rod. I use no fly wheel but
to soften the ends of the stroke I employ a pendulum. At the commencement of the
stroke when steam is first admitted to the cylinder it operates to accelerate the
pendulum and towards the end of the stroke when the steam is expanding the energy
so stored up in the pendulum is expended upon the ram. I couple the pendulum with
the piston rod by means of a slotted cross-head in which a die is able to slide; the die
receives a pin carried by the pendulum. I usually provide two cylinders and so
arrange that the piston is mid-stroke in one cylinder as the stroke in the other
cylinder is completed. Each cylinder is provided with its own controlling pendulum:
I connect the pendulums by connecting rods with cranks on a light shaft and from the
shaft which is thus driven I impart motion to the valves. The pumps I construct in
the following manner-each pump has two cylinders and the ram passes through one
cylinder and enters the other through a gland. It operates in this cylinder as an
ordinary single action plunger pump. The part of the ram within the first cylinder is
of two diameters and it works through corresponding glands at the two ends of the
cylinder. During the effective stroke of the main cylinder the larger part of the ram
is travelling out of the other cylinder whilst the smaller part of the ram is entering.
Now the water delivered from the main cylinder is made to pass through the other
cylinder before it gets away. Thus whilst the main cylinder is delivering a part of
the water is retained in the other cylinder and this is delivered during the non-effective
stroke of the main cylinder. Thus a continuous flow is obtained and this is effected in
such a manner that all the pump glands are accessible from the outside without taking
the pump apart.
The engine may be compounded and the steam expanded from cylinder to
cylinder.
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1000
CARPMAEL & Co.,
Agents.
COMPLETE SPECIFICATION.
Improvements in Pumping Engines.
[, FREDERICK WILLIAM WALKER of the Firm of Messrs. Tannett Walker & Co..
Leeds 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 :-
This Invention has for its object improvements in pumping engines.
I connect the ram of the pump directly with the piston rod. I use no fly wheel, but
to soften the ends of the stroke I employ a pendulum. At the commencement of the
stroke when steam is first admitted to the cylinder it operates to accelerate the
pendulum and towards the end of the stroke when the steam is expanding the energy
so stored up in the pendulum is expended upon the ram. I couple the pendulum with
the piston rod by means of a slotted cross head in which a die is able to slide; the
die receives a pin carried by the pendulum. I usually provide two cylinders and so
arrange that the piston is mid-stroke in one cylinder as the stroke in the other
Price 8d 1

page_text: cylinder is completed. Each cylinder is provided with its own controlling pendulum.
I connect the pendulums by connecting rods with cranks on a light shaft and from the
shaft which is thus driven I impart motion to the valves. The pumps I construct in
the following manner :-cach pump has two cylinders and the rain passes through one
cylinder and enters the other through a gland. It operates in this cylinder as an 5
ordinary single action plunger pump. The part of the ram within the first cylinder
is of two diameters and it. works: through corresponding, glands at the two ends of the
cylinder. During the effective stroke of the main cylinder the larger part of the ram
is travelling out of the other cylinder whilst the smaller part of the ram is entering.
Now the water delivered from the main cylinder is made to pass through the other
cylinder before it gets away. Thus whilst the main cylinder is delivering a part of
the water is retained in the other cylinder and this is delivered during the non-effective
stroke of the main cylinder. Thus a continuous flow is obtained and this is effected in
such a manner that all the pump glands are accessible from the outside without taking
the pump apart.
The engine may be compounded and the steam expanded from cylinder to
cylinder.
In order that my said Invention may be fully understood and readily carried into
effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is an elevation partly in section and Figure 2 is a plan with some parts:
removed of a double pumping engine constructed in accordance with my Invention.
a is a steam cylinder; in the plan the two steam cylinders of the double engine are.
seen side by side. is the piston rod, c is the ram. d is the main pump cylinder
and e the second pump cylinder which receives water from the first to render the flow 2
continuous. is the pendulm which is caused to vibrate by a pin f upon it passing
through a dic g. The die g can slide in the slotted cross head 6 on the piston rod.
In the double engine all these parts are in duplicate. is a light crank shaft
and i i are connecting rods which couple the cranks upon it with the pendulums and.
so the shaft is driven. kk are eccentrics on the shaft which actuate the valves ll of the
steam cylinders.
The action of the pendulums in storing up energy at the commencement of the
stroke when the full pressure is on the steam piston and in returning it whilst the
steam is expanded has been already explained.
One of the advantages resulting from their use is. that the fly wheel is dispensed
with.
The delivery from the pump is rendered approximately uniform by the action of the
ram in the cylinder e. The sectional areas of the parts of the ram which work through
the glands at the opposite ends of the cylinder e are different as the drawing shows
and there is a shoulder on the ram at c'. "When the ram is entering the cylinder d
the larger part of the ram is leaving the cylinder e and some of the water ejected from
the cylinder d is accommodated in the cylinder e until the return stroke during which
it is expelled by the return of the larger part of the ram into the cylinder e
The
cylinders d and'e are so far apart that the glands on their adjacent ends are accessible to
renew the packing or leathers as may be required.
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. A pumping engine substantially as described having a steam cylinder and pump
with their reciprocating parts directly connected the, one with the other and also.
connected with a pendulum as herein set forth.
2. A double pumping engine substantially as described with steam cylinders,
pumps and pendulums and with the pendulums driving a light crank shaft which imparts.
movement, to, the steam valves as herein set forth.

page_text: 3. A pumping engine substantially as described in which the piston working in the
steam cylinder is directly connected with a ram which passes through one pump
cylinder and enters another so far beyond the first that the glands of both are accessible
and in which the pump cylinders are connected and the ram so formed that a continuous
delivery is obtained as herein set forth.
4. A pumping engine substantially as represented by the drawings annexed.
DL: TEL
T1 1000
FRED. W. WALKER.