An Improved Steam Motor for Pumps.
Year: 1889

page_text: Complete specification Left, and Dec., 1009-accepted, allo
COMPLETE SPECIFICATION.
An Improved Steam Motor for Pumps.
I, HENRY O'BEATTY, of the City of Sacramento, in the State of California United
States of America, Attorney 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 my invention relates to the class of steam actuated motors or engines which
ar specially adapted for the operation of pumps; and my invention consists in the
hereinafter described novel motor or engine, together with details of construction and
arrangement.
The object of my invention is to provide a steam motor or engine of this class in
which the whole expansive power of the steam is employed to move water (or any
other heavy substance it may be desirable to raise for a limited distance) in a vertical
line without the use of any crank or circular motion, the power being used only in the
ascending line, the return movement being wholly by gravity.
Referring to the accompanying drawing for a more complete explanation of my
invention, the figure is a vertical section of my steam-motor.
A is a bed-plate, upon which is mounted and bolted firmly a steam-chest B, from
the centre of which rises the vertical main cylinder C, the lower end of which is in
open communication with the central portion of the steam chest.
Within the cylinder is the piston D the rod d of which extends downwardly
through the steam-chest and through the bed plate in a suitable stuffing box and
has its lower end connected with the plunger rod E of a pump, not necessary
herein to show.
The steam chest B is a three compartment one, the central compartment being
designated by 6 the steam inlet compartment being designated by band the steam
exit compartiment being marked by 62. The inlet-compartiment 6' communicates with
the central compartment by an inlet port F, and said central compartment communicates
with the exit compartment 62 through an opening G. H is the steam inlet pipe for
admitting the steam to the compartment 6', and I is an exit port through which the
steam is exhausted from the exit compartment 62. In the top of the cylinder C is an
air relief port c and from each side of said cylinder near its top open out ports c¹
which communicate with auxiliary steam cylinders J having air-relief ports j;
within these supplementary cylinders are mounted pistons K having downwardly-
extending stems k, the lower ends of which are connected with vertical tubular valve-
rods L, which extend downwardly in suitable stuffing-boxes-one through the inlet
compartment b¹ of the steam chest, and the other through the exit compartment b³ of
said steam-chest:
Secured to the side of the valve-rod L, which passes through the inlet compart-
ment 6, is a valve f for controlling the inlet port F and secured to the side of the
valve rod L, which passes down through the exit compartment 63, is a valve i which
controls the exhaust port I from said compartment.
Within the tubular valve-rod L are fitted collars M having downwardly extending
stems m which pass entirely through the tubular valve-rods and are connected at their
lower ends with a cross-head e of the pump plunger rod E.

page_text: Within the lower ends of the tubular valve rods L are mounted spiral springs N
which encircle the stems m. The lower ends of these spiral springs rest on caps
screwed on the lower ends of the valve-rods, said caps being perforated to permit the
free passage of stems m.
In the bottom of the steam chest and passing down through it and the bed-plate, is
a sliding piston-rod O, the lower end of which is adapted to come in contact with an
arm P, secured to the valve rod L. Below the bed-plate and secured at each end
thereto is a stirrup or stop-bar Q, against which the lower ends of the valve rod are
adapted to come in contact to lin.it their stroke.
The operation of the device is as follows; Steam is admitted through the pipe H
into the inlet compartment b¹ of the steam chest, and thence passing through the open
port F into the central compartment of said chest, passes upwardly into the main
cylinder C and under the piston D therein. The piston D is thereby raised on its
upward stroke, thus lifting the pump-plunger, the cross-head e of which also lifts the
steins m in the tubular valve rods L. When the piston D reaches nearly to the limit
of the upward stroke it passes by and exposes the ports c' in the top of the cylinder so
that the steam passes through said ports into the supplementary cylinders J and under
the pistons K therein, thereby raising said pistons, and through their stems k raising the
tubular valve rods L, which operation has the effect of closing the inlet port F by means
of the valve and opening the exhaust port 1.by means of the valve i. The steam
immediately exhausts through the exhaust port both from the supplementary cylinders J
and the main cylinder C and the weight of all the parts of the pump, plunger, and its rod
and the column of water causes the downward movement of the piston Daud also the
downward movement of the collars M in the tubular valve-rods L. When the bottom of
the stroke has been nearly reached the collars M on the top of stems m come in contact
with the top of springs N and force the valve rods L down on the stirrup or stop-bar Q,
thereby again opening port F. and closing exhaust port I, the stem m which passes
through steam compartment 62, being set a little shorter than the other stem m which
passes through compartment 61 so that the valve i will close the exhaust port just as
the inlet port begins to be exposed by its valve.
In order to provide for completely reaching the desired limit of the downward
stroke of valve rod L which passes through compartment & I have the piston-rod O
the head of which lies within the central compartment of the steam-chest. This rod
passes downwardly through the bed plate, and is adapted to come in contact with the
arm P on the lower end of the tubular valve rod L which passes through ball as
heretofore described. Now as the valve funcovers the inlet port F, steam rushes into
the compartment b and tends to check the downward movement of the piston D; but
this steam acting on the piston O forces it downwardly, and coming in contact with
the arm P attached to the valve rod L forces said rod down into contact with the
stirrup or stop bar and completely opens inlet port F.
The use of the springs N is primarily to force the valverods Ldown to the stirrup Q,
thus making the proper alternative opening and closing of the two valves fand i;
but in this kind of motor it being impossible to so regulate it that the incoming
steam will arrest the descending motion of the piston at precisely the same point at
every descent, the elasticity of the springs admit of a descent of the piston for several
inches below where it is when the valves have been fully opened, and the rebound of
the springs will aid the inrushing steam in arresting the downward motion and
starting the piston in the ascending line.
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. In a steam motor for pumps the combination of a main cylinder, a piston mounted
therein and having its rod connected with a pump-plunger a steam inlet port and a
steam exhaust port at the lower end of the cylinder and communicating therewith
supplementary cylinders communicating with the upper end of said main cylinder
pistons in said supplementary cylinders downwardly extending valve-rods connected

page_text: therewith, a valve carried by one of said rods and controlling the inlet port of the
main cylinder, and a valve carried by the other of said rods and controlling the
exhaust port of said main cylinder, substantially as described.
2. In a steam motor for pumps the combination of the main cylinder, a piston
mounted therein and having a rod connected with a pump plunger a steam inlet port
and a steam exhaust port at the base of said main cylinder, supplementary cylinders
communicating with the top of said main cylinder, pistons mounted in said supplemen-
tary cylinders and having downwardly extending valve-rods valves carried by the said
rods for controlling the inlet and exhaust ports at the base of the main cylinder, and
connections from the rod of the piston of the main cylinder to the valve rods for
returning said valve rods and reversing their valves substantially as described.
3. In a steam-motor for pumps the combination of a steam chest having a steam
inlet, a steam-exhaust and a central receiving-compartment, an inlet-port connecting
the inlet compartment with the central compartment, an open communication between
the central compartment and the exhaust coinpartment, and an exhaust port for said
exhaust-compartment, and main cylinder mounted upon the steam-chest and com-
municating with the central compartment thereof, a piston in said cylinder, having a
rod connected with the pump plunger, supplementary cylinders communicating with
the top of the main cylinder, pistons in said supplementary cylinders, having down-
wardly-extending valve-rods passing through the inlet and exhaust compartments of
the steam chest, and valves carried by said rods for controlling the inlet port and
exhaust port of said compartments, substantially as described.
4. In a steam motor for pumps, the combination of a valve chest having
an inlet
port and an exhaust port, a main cylinder communicating with the steam-chest, a
piston in said cylinder, having a rod connected with a pump-plunger, supplementary
cylinders communicating with the top of the main cylinder, pistons in said supple-
mentary cylinders, having stems tubular valve-rods connected with said stems and
passing down through the steam chest, valves on said rods for controlling the inlet
port and exhaust-port of said steam-chest, vertically-moveable stens in the tubular
valve-rods and connected at their lower ends with a pump-plunger, and a contact-
connection between said movable stems and tubular valve-rods whereby the latter are
returned and the valves reversed, substantially as described.
5. In a steam motor for pumps the combination of a steam-chest having an inlet
port and an exhaust-port, a main cylinder communicating with said steain-chest, a
piston mounted in said cylinder and having a rod connected with the pump plunger,
supplementary cylinders communicating with the top of the main-cylinder, pistons in
said supplementary cylinders, having downwardly-extending stems tubular valve rods
connected with said stems and passing down through the steam-chest, valves carried
by said tubular rods for controlling the inlet and exhaust ports of the steam chest
movable stems with collars within the tubular valve-rods and passing down through
them and connected with the pump-plunger at their lower ends, and springs within
the lower ends of the tubular valve-rods, with which the collars of the movable stems
come in contact to reverse the valves substantially as described.
6. In a steam motor for pumps the combination of a steam chest having an inlet
porf and an exhaust port, a main cylinder communicating with said steam-chest, a
piston mounted in said cylinder and having a rod connected with a pump plunger,
supplementary cylinders communicating with the top of the main cylinder, pistons in
said supplementary cylinders having downwardly extending stems tubular valve rods
connected with said stems and passing down through the steam-chest valves carried by
said tubular rods for controlling the inlet and exhaust ports of said chest, movable
stems with collars within the tubular valve rods and passing down through them and
connected with the pump plunger at their lower ends, springs within the lower-ends
of the valve-rods, with which the collars of the moveable stems come in contact to
reverse the valves and a fixed stirrup or stop bar against which the lower ends of
the valve rods come in contact to limit their downward movement substantially as
described.

page_text: 7. In a steam motor for pumps, the combination of the steam chest having an inlet
port and an exhaust port the main cylinder communicating therewith the piston in
said main cylinder having a rod connected with the pump-plunger, the supplementary
cylinders communicating with the top of the main cylinder, the pistons in said
supplementary cylinders having downwardly extending stems, the tubular valve rods
connected with said stems and passing down through the steam chest, the valves
carried by said rods for controlling the inlet and exhaust ports of the steam chest, the
movable sliding stems with collars in the tubular valve rods, the lower ends of which
are connected with the pump-plunger, the spring forming the contact between the
collars of the stems and tubular valve rods for reversing the valves the sliding piston O
within the steam-chest, the arm on one of the valve-rods, with which the piston O is
adapted to come in contact, and the stirrup or stop bar for the lower ends of the
valve-rods, substantially as described.
Dated this 2nd day of Decembar 1980
HORN & SON,
Applicant's Agents.