US408400A - Steam - Google Patents

Description

(No Model.)

`H. O. BEATTY. STEAM MOTOR FOR PUMPS.

lPatented Aug. 6, 1889.

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UNITED STATES PATENT OFFICE.

HENRY O. BEA'ITY, OF SACRAMENTO, CALIFORNIA.

STEAVhMOTOR FOR PUMPS.

SPECIFICATION forming part of Letters Patent No. 408,400, dated. August 6, 1889. Application led May 2, 1889i Serial No. 309,387. (No model.)

To all whom t may concern.-

Be it known that I, HENRY O. BEATTY, of the eityo'f Sacramento, county of Sacramento, State ot' California, have invented an Improve ment in Steam-Motors for Pumps; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to the class of steam actuated motors or engines which are specially adapted for the operation of pumps; and my invention con sists in thehereimatter-described novel motor or engine, together with details of construction and arrangement.v

The object ot 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 crankor 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 iigure is a vertical section of my steam-motor.

A is a bedplate, upon which is mounted and bolted firmly a steam-chest B, from the center 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.

Vithin the cylinder C is the piston I), the rod d of which extends downwardly through the steam-cl1est 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 design ated by l), the steam-inlet compartment being designated by b, and the steam-exit compartment being marked by b2. The inlet-compartment b communicates with the central compartment by an inlet-port F, and said ceutral compartment communicates with the exitcompartment b2 through an opening G. His the steam-inlet pipe for admitting the steam to the compartment b', and I is an exit-port through which the steam is exhausted from the exitcompartment b2.

In the top of the cylinder C an air-relief ,port c, and from each side of said cylinder, near its top, open out ports c', which commu nicate with auxiliary steam-cylinders J, having airrelief ports j. IVithiu these supplemeutary cylinders are mounted pistons K, having downwardly-extendiug stems 7c, 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 Z9 of the steamchest and the other through the exitfcom partment b2 ot said steam-chest.

Secured to the side of the valve-rod L, which passes through the inlet-compartment b', is a valve f, for controlling the inlet-port F, and secured to the side of the valverod L, which passes down through the exitecompartment b2, is a valve t', which controls the exhaust-port I from said compartment.

lVithin the tubular valve-rod L are fitted collars M, having downwardly extending stems m, which pass entirely through the tubular valveaods, and are connected at their lower ends with a cross-head e of the pumpplunger rod E.

IVithin the lower ends of the tubular valverods L are mounted spiral springs N, which encircle the stems fm. The lower ends of these spiral springs rest on caps Z, screwed on the lower ends of the valve-rods, said caps being perforated to permit the free passage of stems in.

In the bottom of the steam-chest, and passing down through itA 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 valverod L. Below the bedplate, and secured at each end thereto, is a stirrup or stop-bar Q, against which the lower ends of the valve-rods are adapted to come in contact to limit their stroke.

The operation of the device is as follows: Steam is admitted through the pipe II into the inlet-compartment b of the steam-chest, and thence, passing through the open port F into the central compartment b of said chest, passes upwardly into the main cylinder C and under the piston D therein. The piston Dis thereby raised on its upward stroke, thus lifting the pump-plunger, the cross-head e of which also lifts the stems m in the tubular valve-rods L. IlVheu the piston D reaches nearly to t-he 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 7c raising the tubular valve-rods L, which operation has the effect of closing the inlet-port F by means of the valve f, and opening the exhaust-port I by means of the valve i. The steam immediately exhausts through the exhaust-port both from the supplementary cylinders .I 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 D, and also the downward movement of the collars M in the tubular valve-rods L. NVhen 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 b2, being set a little shorter than the other stem m, which passes through compartment b', so that t-he valve i will close the exhaustport 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 b', I have the piston-rod O, the head of which lies within the central compartment b of the steam-chest. This rod passes downwardly through the bed-plate, and is adapted t0 come in contact with the arm P on the lower end ot the tubular valverod L, which passes through b', all as heretofore described. Now as the valve f uncovers 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 Q and completely opens inlet-port F.

The use of the springs N is primarily to force the valve-rods L down to the stirrup Q, thus making the proper alternate opening and closing ot the two valves f and t; 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 everydescent, the elasticity ot 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 inrnshing steam in arresting the downward motion and starting the piston in the ascending line.

Having thus described my invention, what Il claim as new, and desire to secure by Letters Patent, is

l. In a steam-motor'for pumps, the combination of a main cylinder, a piston mounted therein and having its rod connected with the 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 ot' said main cylinder, pistons in said supplementary cylinders, downwardlyextending valve-rods connected 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 the pump-plunger, a steam-inlet port and a steamexhaust port at the base of said main cylinder, supplementary cylinders communicating with the top oi. said main cylinder, pistons mounted in said supplementary cylinders and having downwardly-extending valverods, valves ca-rried by said ro'ds 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 inletcompartment with the central compartment, an open communication between the central compartment and the eXhaust-compartment and an exhaust-port for said exhaust-compartment, and main cylinder mounted upon the steam-chest and communicating 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 downwardly-eXtendin g 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 the eX- haust-port of said compartments, substantially as described.

4. In a steam-motor nation of a valve-chest having an inlet-port and an exhaust-porta main cylinder communicating with the steam-chest, a piston in said cylinder, having a rod connected with a pumpplunger, supplementary cylinders communieating with the top of the main cylinder, pistons in said supplementary cylinders, having stems, tubular valverods connected with said stems and passing down through the steamchest, valves on said rods for controlling the inlet-port and exhaust-port ot said steamchest, vertically-movable stcmsin the tubular Valve-rods and connected at their lower ends with a pump-plunger, and a contact-connection between said movable stems and tubular for pumps, the combi- IOO IIO

valve-rods, whereby the latter are returned and the valves reversed, substantially as described.

5. In a steam-motor tor pumps, the combination of a steam-chest having an inlet-port and an exhaust-port, a main cylinder communicating with said steam-chest, a piston mounted in said cylinder and having a rod connected with the pump-plunger, suppleV mentary cylinders communicating with the top of the main cylinder, pistons in said supplem en tary 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 exhaustports of the steam-cl1est, 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 ot' 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 steammotor for pumps, the combination of a steantchest having an inlet-port and an exhaust-port, a main cylinder communicating with said steam-chest, a piston mounted in said cylinder and having a rod connected with the pump plunger, supple mentary 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 saidtubular rods for cont-rolling 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 movable stems come in contact to reverse the valves, and a fixed stirrup or stop-bar against which the lower ends of the valve-rods comein contact to limit their downward movement, substantially as described.

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 steamchest, the valves carried by said reds for controlling the inlet and exhaust ports of the steamechest, the movable sliding stems with collars in the tubular valve-rods, the lower ends of which are connected with the pumpplunger, 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 steani-chest, the arm on one of the valverods, with which the piston O is adapted to come in contact, and the stirrup or stop-bar for the lower ends of the val ve-rods, substantially as described..

In witness whereof I have hereunto set my hand.

HENRY O. BEATTY.

Vitn esses:

J. CHARLES JONES, J. FRANK BROWN.

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