US465477A - johnson - Google Patents

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US465477A
US465477A US465477DA US465477A US 465477 A US465477 A US 465477A US 465477D A US465477D A US 465477DA US 465477 A US465477 A US 465477A
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steam
valve
lever
engine
piston
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00Machines, pumps, or pumping installations having flexible working members
    • F04B43/02Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06Pumps having fluid drive
    • F04B43/073Pumps having fluid drive the actuating fluid being controlled by at least one valve
    • F04B43/0736Pumps having fluid drive the actuating fluid being controlled by at least one valve with two or more pumping chambers in parallel

Description

(No Model.)
E. G. JOHNSON. GOVERNOR PoR STEAM PUMPS.
Patented Dec. 22, 1891.-
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STATES PATENT OFFICE.
EDW'ARD C. JOHNSON, OF KEOKUK, IOWA, ASSIGNOR TO 'TERESA M.
JOHNSON, OF SAME PLACE.
GOVERNOR FOR STEAM-PUMPS.
SPECIFICATION forming part of Letters Patent No. 465,477, dated December 22, 1891. Application ned raum 13,1891. serai No. 377,619. (No man.)
.To all whom it may concern-.-
Be it known that I, EDWARD O. JOHNSON, residing at Keokuk, in the county of Lee and State of Iowa, have invented certain new and useful Improvements in Governors for Steam- Pumps, of which the following is a specification, reference being had therein to the accompanying drawing. l
This invention relates to governors for steam-pumps in which the water-pressure from the pump is made to regulate the supply of steam to the engine which drives the pump.
The object of the invention is to regulate the speed or power of the pump, so that it shall conform to the requirements of the desired service.
The figure of the drawing is a central vertical section of a steam-supply valve and governor connected thereto, some parts of the device being shown in elevation, as apparent.
The numeral 1 indicates the body of the steam-supply or throttle-valve.
2 denotes the inlet-passage, and 3 the passage leading toward the engine which drives the pump.
The slide-valve is shown as seated in the bushings 4 5, inside the cup 40. This slidevalve consists of askeleton cylindercomposed of disks of plates 6, 7, and 8, connected by longitudinal bars 9. When the sliding plug is lifted, so that the disk 7 is in the bushing 5, disk 8 will be in the bushing 4, and the passage for steam will be closed. So when the slide is dropped until plate 6 is in the bushing 5, plate 7 will be in the bushing 4, and the passage is closed; but in the intermediate position shown the passages are open through the skeleton body of the slide or plug.
l The valve plug or slide is moved in its seat by means of the stem 10, which passes through stuffing-box 11. This valve is old and wellknown, and other valves having similar functions will serve the same purpose. The
valve-spindle has a perforated hub 12 or other usual connection to the controlling-lever 13, which is pivoted to standard 14 in usual manner. The governor-cylinder 15 has a piston 16, of usual construction, and the spindle 17 rests on this piston and serves as a follower therefor. The lever 13 is connected to this spindle or rod 17, and is thus raised or lowered with the movement of the piston 16, and by its movement opens or closes the steampassage according to the position of piston 16. The weight 2O serves to hold the lever down until raised by the piston movement. Water from the delivery-pipe of the pump enters a side pipe 2l, and flows into the cylinder 15, unless it is permitted to escape by the side passage 22, which is controlled by cock 23. The cock 23 may be turned soY as to permit nearly all the water from pipe 21 to pass out and run to waste. It will be understood that konly a small quantity of water enters pipe piston moves down, which causes the valve to open again. as sometimes happens, either by failure of water-supply or by accident to the pump, the pressure in cylinder 1-5 would fall and the piston would move down from the central or open position shown in the figure. The stop 26 under the lever 13 will support the lever 13 when the steam-Valve is in its lower closed position. In such position the engine will be stopped; but the stoppage will be gradual, owing to the slow escape of water from the cylinder 15 through small passage 25. When thus stopped, the engine can only be started again by raising the lever 13 and holding the steam-valve open until pressure has accumulated in cylinder 15.
To prevent the entire stoppage of the engine, a movable piece 28, (shown as a sorew,) may be interposed between the lever 13 and the rest 26. By lifting this piecea little way the governor will be so set that on a failure of pressure in cylinder 15 the steam-supply will be almost cut 0E; buta small steam-supply will pass to the engine to keep the engine moving. This arrangement is very desirable where the water-supply is intermitting, as often happens when the supply is from a well or spring.
Instead of or in addition to Weight 26, a
Should the pump fail to draw,
Spring, as 30, may be applied to bear on the lever 13, so that the resistance to the raising of lever 13 increases gradually as the pist0n rises. Of course the location of the spring is not material, and the same result may be reached by the application of a series of Weights, or a spring around spindle 17, or other means.
This invention is an improvement on my patented device, No. 429,570, of June 3, 1890. The general principle is much the same; but the stop and adjustable rest for the valve-lever and the reduced orifice leading to the cylinder are improvements. In the present device connection is made to a different style of Valve, and the construction is changed in several particulars,
I do not claim, broadly, any of the separate elements contained in this device, as cylinders, pistons, levers, valves, and pipes are old and Well known. Nevertheless these elements arranged as shown and described, produce a more simple, compact, and efficient governor for steam -pumps than any other with which I am familiar What I claim is- 1. The combination, with the slide-valve of a ,steam-engine, and the Water-supply pipe leading from the pump driven by said engine, of a Water-cylinder and piston therein, a lever controlled by said piston and controlling thesteam-valve as aforesaid, and a stop in the line of movement of said lever, said stop operating to retain the steam-valve in closed position when the pressure falls in the Watercylinder below a given minimum, substantially as described.
2. The combination, With the steam-valve of an engine, and the Water-supply pipe leading from the pump driven by said engine, of a Water-cylinder and piston therein, and a lever controlled by said piston and controlling the steam-valve, an adjustable piece which determines the amount of movement of the lever on reduction of pressure in the cylinder, and a leak or by-passage controlled by a cock and acting as a regulator to the Waterpressure in the cylinder, substantially as described.
In testimony whereof l affix my signature in presence of two Witnesses.
EDWARD C. JOHNSON. VitneSSeS:
W. A. BARTLETT, T. W. JOHNSON.
US465477D johnson Expired - Lifetime US465477A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307584A (en) * 1963-08-05 1967-03-07 Weston Hydraulics Ltd Control system
US5074325A (en) * 1990-02-16 1991-12-24 Westinghouse Electric Corp. Pivoting control valve actuator and support assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307584A (en) * 1963-08-05 1967-03-07 Weston Hydraulics Ltd Control system
US5074325A (en) * 1990-02-16 1991-12-24 Westinghouse Electric Corp. Pivoting control valve actuator and support assembly

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