Improvements in Power-operated Pumps.
Year: 1898

page_text: Date of Application, 7th Oct., 1898-Accepted, 12th Aug., 1899
[Communicated from abroad by CHARLES CAMPBELL WORTHINGTON, of Irvington,
in the County of Westchester, and State of New York, United States of
America, Mechanical Engineer.]
Improvements in Power-operated Pumps.
I, HENRY EDWARD NEWTON, of the Office for Patents, 6, Bream's Buildings,
Chancery Lane, in the County of London, Patent Agent, 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 especially to duplex steam pumps, the chief object of the
invention being to provide an improved construction of this class, which shall be
of such compact form as to secure a high capacity with a pump of small size, and
further, to provide such a pump which shall be simple, cheap, and durable in
construction, convenient for forming the required pipe connections, and which
shall present an improved appearance over such pumps now in use.
In attaining the objects above stated, certain improvements have been made in
both the steam-end and the water-end of the pump, and the invention includes
certain features in the construction of duplex steam cylinders, relating particu-
larly to the exhaust passages, and in the construction of duplex pump cylinders
and their chambers and connections, all as fully described hereafter and speci-
fically pointed out in the claims.
For a full understanding of the invention, a detailed description of a con-
struction embodying all the features of the invention in their preferred form, as
applied to a duplex direct-acting steam pump of a well-known class, will now
be given in connection with the accompanying drawings, in which:-
Fig. 1 is a vertical longitudinal section of the pump, taken on the line 1 of
Figs. 2 and 5.
Fig. 2 is a horizontal section on the line 2 of Fig. 1.
Figs. 3 and 4 are vertical cross sections of the steam end, on the lines 3 and 4
of Fig. 1.
Fig. 5 is a vertical cross section on the line 5 of Fig. 1.
Fig. 6 is a vertical longitudinal section on the line 6 of Fig. 5.
Referring to the drawings, A A¹ are the steam cylinders on opposite sides of
the engine, and B B¹ the corresponding water cylinders. The steam and water
cylinders are preferably connected, as shown, by the side frames C and central
frame piece D, formed integral with the steam end, and connected to the water
end by the usual flange connection, the central frame piece D forming the cradle
on which the valve movement is mounted, and through which the steam exhausts,
as described hereafter. The steam cylinders A A¹, on opposite sides of the engine,
and the cradle D, are preferably formed integral, as shown, so that a single cast-
ing forms the steam end and cradle, with the exception of the valve chest,
although it will be understood that the invention broadly considered is not
limited to such an integral construction. The steam cylinders are shown as
having the usual pistons a connected by piston rods 6 directly to the pump

page_text: plungers con opposite sides of the engine, and the usual induction ports d d' and
exhaust ports e, e¹ for the respective cylinders A A¹, communicating respectively
with the single steam chest E on top of the cylinders, and with the exhaust
passage by exhaust ports 99,-all these ports being shown as controlled for
admission and exhaust by the D-slide valves h on the respective cylinders,
although it will be understood that the form and arrangement of these valves and
ports may be varied as desired. It will be understood that the valves h h¹ may be
actuated by any suitable movement. As shown, they are actuated by the usual
cross-over valve movement H mounted on the cradle D, as previously described,
and connected to the valves h¹ by links 11 and valve rods 12, so that the valve
on each side is operated from the other side of the engine, as usual in duplex
direct-acting engines of the class shown. The induction pipe F may be, and is
shown as, connected directly with the steam chest E at the end of the pump, as
usual in such constructions, the improvements in the steam end relating to the
exhaust construction, which is as follows:--
The exhaust passage f, which extends across both ports g g¹, as shown in
Figs. 2 and 3, connects centrally with an exhaust passage i, which preferably is
inade narrow horizontally, as shown, for compactness of construction, and extends
downward between the steam cylinders A A and towards the pump end, opening
beyond the cylinder ends into a chamber I, shown as formed by an extension of
the cylinder casting and enlargement of the cradle D. With this chamber I, the
exhaust pipe G connects by port k. The port preferably opens vertically from
the chamber I, either upward or downward, but it will be understood that this
may be varied. As shown, the pipe G is above the chamber, and a second port k
opens downward from the chamber I, and this construction is preferably used, so
that the exhaust pipe G may extend either upward or downward, as may be found
more desirable in setting up the pump; the port k, to which the exhaust pipe G
is not connected, being then closed in any suitable manner, as by a cover 10,
shown on the lower port, k in the drawings.
Referring now to the water end of the pump, the water cylinders B B on oppo-
site sides are preferably cast integral with each other, and with the pulsation
chambers and suction and force passages, as shown, a very compact cheap and
durable construction being thus provided, which in itself forms a specific part
of the invention, but it will be understood that the broader features of the
invention are not limited to this integral construction.
The suction passage L for both cylinders BB1 extends upward from below, in
a plane between the cylinders, so that its flange 13, for connection with the
suction main, is at the end of the pump, below and between the cylinder heads 14,
and this suction connection L expands horizontally above the cylinders into a
broad suction chamber 7, preferably of small depth, as shown, from which the
suction passes through suction valves mm¹ for the respective cylinders, which
valves may be of any common or suitable form, into the respective pulsation
chambers nn and nn, for the opposite ends of the respective pump cylinders,
and opening downward into the latter. These chambers are formed by the longi-
tudinal and transverse partitions 1, 2. Above the pulsation chambers nn¹, and
formed as shewn by a separate casting bolted onto the top of the cylinder con-
struction, is the force chamber K, into which the fluid is forced through force
valves o o¹, for the respective cylinders, which may be of any common or suitable
form. These valves ool are mounted on the valve plate 15, and the force pas-
sage M opens through this valve plate centrally between the. valves oo, and
extends down through the casting of the cylinder construction centrally, between
the pulsation chambers n n¹ and valves mm', its walls being formed by portions
of the partition 1, 2. Below the pulsation chambers, it passes downward as a
pipe through the suction chamber 1, and between the cylinders, where it is con-
tracted sidewise, and expanded vertically, to secure the desired capacity with
compactness in the arrangement of the cylinders and force passage, and then
extends upward, resuming its circular form, and passes between the rear pulsa

page_text: tion chambers n n', and then outward to the end of the pump, with its connect-
ing flange 16 above and between the cylinder heads 14, and in line with the
flange 13 of the suction passage L, thus bringing all the flanges for the cylinder
heads and suction and force connections into the most convenient position for
rapid and accurate facing in manufacture.
As shown, four suction and force valves are used, one for each pulsation cham-
ber, and the force passage M is formed square where it passes between the valves,
so as to secure the most compact arrangement of valves and force passage. It will
be understood, however, that the number of valves may be varied, and that the
force passage may be of other form. This force passage, however, will prefer-
ably be made angular in cross section, to correspond with the number of valves
employed for compactness of construction.
I would here remark that while the features forming the invention are prefer-
ably used together, it will be understood that the pump ends may be used
separately in any class of pump, the plungers being operated directly by steam.
pistons, or in any other manner. It will be understood, also, that modifications
in the construction shown may be made, by those skilled in the art, without
departing from the invention, which is not to be limited to the exact form or
arrangement of parts shown in the drawings.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me from abroad, I declare that what I claim is;
1. A steam pump, comprising two steam cylinders arranged side by side,
having a central exhaust passage extending longitudinally of the cylinders, two
pump cylinders arranged side by side, with a force chamber above pulsation
chambers, and a force passage extending downward centrally between the pulsa-
tion chambers and suction valves, and then outward, to open at the end of the
pump, above and in a plane between the cylinders, as shown and described.
2. A steam pump comprising two steam cylinders arranged side by side, and
formed integral with their induction and exhaust passages, and with a central
exhaust passage, two pump cylinders arranged side by side, with a force chamber
above, a force passage extending downward centrally between the pulsation
chambers, the suction valves, and the cylinders, and then upward and outward, to
open at the end of the pump, above and in a plane between the cylinders, as
shown and described.
3. A steam pump comprising two cylinders A, A¹, arranged side by side, and
formed integral with a central exhaust passage i, extending longitudinally of
the cylinder, and opening into an exhaust connection chamber I beyond the inner
end of the cylinders, and integral therewith; one or more vertical ports k for
connecting the chamber I to the exhaust pipe G through the cradle D; two pump
cylinders B, B, pulsation chambers n, n, suction passage and chamber L, and
a central force passage M, extending downward centrally between the pulsation
chambers, and then upward and outward to the discharge, all formed integral,
as shown and described.
4. Two steam cylinders AA' arranged side by side, and having the central
exhaust passage i extending longitudinally of the cylinders, as and for the pur-
pose above described.
5. Two steam cylinders arranged side by side, and having the central narrow
exhaust passage
extending longitudinally of the cylinders, and lying between
the upper portions of the cylinders and an exhaust pipe connection beyond the
inner end of the cylinders as and for the purpose above described.
6. Two steam cylinders arranged side by side, with cradle D beyond the ends
cf the cylinders, and having a central exhaust passage extending longitudinally
of the cylinders, and into cradle 1), and one or more vertical ports for connect-
ing the end of the passage with the exhaust pipe, as and for the purpose above
described.
7. Two steam cylinders arranged side by side, and formed integral with their

page_text: induction and exhaust passages, and with a central exhaust passage for the two
cylinders, as and for the purpose above described.
8. Two steam cylinders arranged side by side, and formed integral with a
central exhaust passage extending longitudinally of the cylinders, and opening
into an exhaust connection chamber beyond the inner end of the cylinders, and
integral therewith, as and for the purpose above described.
9. Two steam cylinders arranged side by side, and formed integral with a
cradle as D, and having a central exhaust passage extending longitudinally of
the cylinders, and connecting with the exhaust pipe through the cradle, as and
for the purpose above described.
10. Two pump cylinders arranged side by side with the force chamber above
the pulsation chambers, and the force passage extending downward centrally
between the pulsation chambers and suction valves, and then upward and outward,
to open at the end of the pump above and in a plane between the cylinders, as
described.
11. Two pump cylinders arranged side by side, with the force chamber above
the pulsation chambers, the suction passage entering at the end of the pump
below, and in a plane between the cylinders, and passing upward between the
cylinders, to form a suction chamber above and between the cylinders, below the
pulsation chambers, and the force passage extending downward centrally between
the pulsation chambers and suction valves, and then upward and outward, to open
at the end of the pump above and in a plane between the cylinders, as described.
12. Two pump cylinders arranged side by side, with the force chamber above
the pulsation chambers, and the force passage extending downward centrally
between the pulsation chambers and suction valves, into the suction chamber and
between the cylinders, and then upward and outward, to open at the end of the
pump above and in a plane between the cylinders, as described.
13. Two pump cylinders arranged side by side, with the force chamber at the
top of the pump, and the force passage extending downward between the suction
valves, to a plane below the valves, and then to the discharge, as described.
14. Two pump cylinders AA¹, pulsation chambers nn¹, and force_chamber K,
force valves o, o¹ above the suction valves m m¹, suction passage L extending
upward from the end of the pump between the cylinders, and forming suction
chamber above and between the cylinders, and force passage M extending down-
ward centrally between the valves, and then outward to the discharge at the end
of the pump, substantially as shown and described.
15. Two pump cylinders A A', pulsation chambers nn¹, suction passage L and
chamber, and central force passage M extending downward gentrally between
the pulsation chambers, and then upward and outward to the discharge, all
formed integral, substantially as shown and described.
Dated this 7th dow of Ontahan 1000
NEWTON & SON,
Agents for the Applicant.