IMPROVEMENTS IN STEAM-PUMPS
Year: 1880

page_text: LETTERS PATENT to Charles Pemberton Deane, of Springfield, Massachusetts,
United States of America, Engineer, for an Invention of "IMPROVEMENTS IN
STEAM-PUMPS."
PROVISIONAL SPECIFICATION left by the said Charles Pemberton Deane at
the Office of the Commissioners of Patents on the 22nd April 1880. į
CHARLES PEMBERTON DEANE, of Springfield, Massachusetts, United States of
America, Engineer. "IMPROVEMENTS IN STEAM-PUMPS."
The said Invention relates to direct acting steam-pumps and chiefly consists
in the means employed for securing prompt and positive action of the parts, and
for controlling the movement of the main piston to prevent injury to the parts
while in operation.
In carrying the said Invention into practice I provide a yoke or connecting
piece between the steam cylinder and water cylinder, also a valve-chest, a supple-
mental or valve moving piston, a main valve, a supplemental valve, a valvo-rod
and tappets on the same, a tappet arm, a hand-lever, a port-controlling device,
steam controlling valves, a hand lever pin fixed on the tappet-arm, a main piston,
ports controlled by the supplemental valve, and the main ports of the engine.
The parts being in a certain position with the main piston moving to the right
and the valve-piston and main valve being at the extreme left of their movement,
steam enters the cylinder through the left hand controlling device, and the exhaust
escapes through the right hand one. When the advancing tappet-arm comes in
contact with the outer tappet, motion is communicated through the valve-rod to the
supplemental valve, which valve is brought into proper position to admit steam into
one end and exhaust from the other end of the valve-chest by means of the ports
for the purpose of moving the supplemental piston and with it the main valve, thereby
reversing the engine. In case the supplemental piston fails to move or to move
with sufficient promptness, a lug on the valve-rod engages with this piston and
moves it by power derived from the main piston, rendering the reversal of the
engine positive.
The aforesaid controlling device consists of three elements or parts, and is so
arranged that one part or valve opens freely when either of the main ports is used

page_text: for the induction of steam to the cylinder, but closes automatically when the port
becomes an eduction port. Another part is arranged to be adjusted by hand to
control the eduction of steam to meet the requirements of the duty of the machine.
One of the ports allows sufficient steam to enter the cylinder after reversal to start
the piston slowly, but the amount is so small in proportion to the area of the
cylinder as to render it impossible for the main piston to strike the cylinder-head
after it has passed the main port. By this device the movement of the main
piston is controlled throughout its whole stroke, is compelled to start and to stop
slowly, so that all danger of injury to the valve-mechanism by contact of parts
is avoided, and the water-valves in the cylinder are compelled to seat themselves
slowly.
In single acting or in vertical pumps or in other pumps in which for any cause
the resistance to the main piston moving in one direction is greater than when
moving in the other direction, the steam-controlling valves are employed to control
the admission of steam to either end of the cylinder us may be required to equalize
the speed of the engine.
The aforesaid hand-lever is used for operating the machine by hand when
required. This lever is connected to the machine and may be readily attached to
the tappet-arm by passing a pin hereinbefore mentioned through an enlargement of
tho aperture in the lever and letting the lever fall into place; the head of the pin
being larger than the upper or smallar portion of the aperture retains the lever in
place. The lever is readily removed by raising the same to bring the hand of the
pin opposite the enlargment of the aperture.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Pemberton Deane in the Great Seal Patent Office on the s
21st October 1880.
CHARLES PEMBERTON DEANE, of Springfield, Massachusetts, United States of
America, Engineer. "IMPROVEMENTS IN STEAM PUMPS."
The said Invention relates to direct acting steam pumps, and consists in the
means employed for controlling the inductive and eductive steam on its passage
from the steam chest to the cylinder and thence from the cylinder through the
exhaust ports, and in providing auxilliary ports for the admission of steam between
the heads of the cylinder and the piston, when at the end of the stroke, thus
securing prompt and positive action of the moving parts.
The object of said improvements is to control the movement of the main steam
engine so as to prevent injury to the working parts of the engine and pump while
in operation.

page_text: Figure 2 is a plan of the same with the valve chest removed.
Figure 3 is a vertical cross section of a steam cylinder showing the device for
controlling the exhaust steam.
Figure 4 is a sectional view of the bed of the steam chest showing the device for
controlling inductive steam.
Figure 5 is an enlarged cross section of the device through which the steam
flows to the cylinder.
Like letters of reference refer to corresponding parts in all of the Figures. A in
the Drawings designates a steam cylinder which is connected to a water cylinder by
means of the yoko B.
C, C, is a valve chest which contains the supplemental or valve moving portion D;
E is the main valve, and F a supplemental valve.
G is a valve rod and H, H³, tappets thereon; I is a tappet arm, and J a hand
lever thereon for working the pump when necessary.
M and M are steam cocks or regulators for controlling the amount of steam
which passes from the steam chest to the cylinder. These cocks are regulated by
turning the hand wheels c, c². The purpose of these cocks is to more effectually
control the action or movement of the main steam piston O, and especially when
applied to vertical steam pumps, which in many cases require long connecting
rods to connect with the pump piston when working in deep mines and other
analogous places.
By the use of these cocks or regulators the pressure of the steam on the upper
side of the piston can be diminished in accordance with the contraction of the
aperture in the cock M' through which the steam flows, while in the meantime the
pressure on the undersido can be increased sufficiently to overcome the additional
weight of the connecting rod and other appendages by an increase of the aperture
in the cock M, thereby securing an equalized movement of the piston and flow of
water at all times.
K, K', are valve inductive and adjustablo exhaust devices for controlling the
action of the steam and the movement of the main piston. The devices consist in
a sleeve or bar of metal, one end of which is provided with a head while its other
end has a screw thread thereon.
These sleeves are of sufficient length to pass through corresponding apertures in
each end of the bed or base of the steam chest. These apertures are made to
correspond with the steam ports c, c', so that when the sleeves are inserted the
passages or induction ports g, and valves a, a', and exhaust port i with adjustable
cut off will coincide with said ports c, c'.
The adjustable cut offf is regulated by a screw m and hand wheel d; a cap h is
screwed to the induction and eduction port device K. By means of the adjustable
exhaust port the movement of the main piston can be equalized when in any
position by an increase or decrease of the back pressure.
L, L', are two small ports communicating with the large ports c, c', and the
cylinder A. These ports are for the purpose of allowing sufficient steam to enter
the cylinder after reversal to start the piston slowly, and also to form a steam
cushion which will render it impossible for the piston to strike the head of the
cylinder after it has passed the ports c, c'. By this device the main piston is
compelled to start and stop slowly so that all danger of injuring the valves a, a²,
and the main piston and cylinder heads are obviated, and also the valves in the
pump cylinder are allowed to raise and scat themselves slowly and without
injury.
N is a pin for securing the hand lover J to the tappet arm I. This lever J is
provided with an opening S of sufficient size to pass over the head of the pin N;
& slot of sufficient size leads upward from the opening S to admit the pin N. The

page_text: lower end of the lever drops into a socket R where it remains while the pump is
being worked by hand.
P, P, are ports controlled by the supplemental valve F, and c, c³, the main ports
of the engine.
The ports being in a position with the main piston and the valve piston and
main valve E being at the extreme left of the movement, steam enters the cylinder
through the left hand induction port, while the exhaust escapes through the
opposite eduction port, and the tappet arm coming in contact with tappet H²
motion is communicated through the valve rod to the supplemental valve, whereby
it is brought into position to admit steam into port c' and from port c through
ports P, P, thereby moving supplemental portion D and with it the main valve E
whereby the main piston is reversed.
In case the supplemental portion fails to move, or to move with sufficient
promptness, a lug on the valve rod engages with said portion and moves it by
force derived from the main piston, thus ensuring a positive reversal of the
engino.
Having thus fully described said improvement and shown how the same may be
advantageously carried into practice, I claim as my Invention,-
1st. In a steam pump, the cocks or steam regulators M, M³, in combination with the
ports or passages lending from the steam chest to a steam cylinder, substantially as
described and for the purpose set forth.
2d. In a steam pump, the induction and eduction port device provided with an
induction valve a and an adjustable exhaust port i in combination with the ports
or passages leading from the steam chest to a steam cylinder, substantially as
described and for the purpose set forth.
3d. In a steam pump, the combination of the cocks or regulators M, M', and
the induction and eduction port devices for the purpose of controlling the steam
and regulating tho movement of the piston and rod when in a vertical position,
substantially as described.
4th. In a steam pump, an auxilliary port for conducting steam to and between
the heads of the cylinder and the piston when at the end of its stroke, substantially
as described and for the purpose specified.
In witness whereof, the said Charles Pemberton Deane, has hereunto set his
hand and seal, this Twenty seventh day of September, in the year of our
Lord One thousand eight hundred and eighty.
Witness,
GEORGE HASELTINE,
Counsellor at Law,
247, Broadway,
New York City.
CHARLES PEMBERTON DEANE. (L.S.)