US825950A - Steam-engine air-pump. - Google Patents

Steam-engine air-pump. Download PDF

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Publication number
US825950A
US825950A US28049205A US1905280492A US825950A US 825950 A US825950 A US 825950A US 28049205 A US28049205 A US 28049205A US 1905280492 A US1905280492 A US 1905280492A US 825950 A US825950 A US 825950A
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pump
steam
main
cylinder
piston
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US28049205A
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William Weir
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William Weir
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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
    • F04B47/00Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F04B47/02Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
    • F04B47/04Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level the driving means incorporating fluid means

Description

No. 825,950. PATENTED JULY 1'7, 1906.

W. WEIR.

STEAM ENGINE AIR PUMP.

APPLIOATION FILED SEPT. 28. 1905.

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UNITED STATES PATENT oFFIoE.

STEAM-ENGINE AIR-PUMP.

Specification of Letters Patent.

Patented July 17, 1906.

Application filedSeptember 28, 1905. Serial No. 280,492.

To all whom it may concern:

Be it known that I, WILLIAM WEIR, a subject of the King of the United Kingdom of Great Britain and Ireland, residing at Oathcart, Renfrewshire, Scotland, have invented certain new and useful Improvements in Steam-Engine Air-Pumps, of which the following is a specification.

My invention has for its object by a novel construction and combination of parts to improve the working of vertical air-pumps of the single-acting type when these are driven independently and directly by the piston-rods of steam-cylinders, to overcome the defects in working of this type of pump due to the unequal and unbalanced loads on the air-pump piston on its u ward and downward stroke, and to diminis the height and generally secure compactness in the design of such air-pumps.

This invention is applicable to single vertical direct-acting air-pumps driven by steamcylinders fitted with any type of actuating steam-valve.

According to my invention and as illustrated in vertical section in the accompanying drawing, which shows a single direct-acting air-pump fitted with my improvements, I arrange on the under side of the main steam-cylinder A a prolongation thereof A, but of less diameter, having its lower end open. In this smaller or differential cylinder A works a trunk or plunger B, which is attached to the maincylinder-piston O and rod D. The top side a of the main steam-cylinder A is in communication with the steam and exhaust ports 6 of the steam-actuating valve E. The under side of the main steamcylinder piston at a is arranged to be always in communication with the steam-supply pipe, as by a branch F, so that the under side of the main piston O is always subject to the working steam-pressure.

The action of the pump when fitted with this improvement is as follows: On the upward or discharge stroke of the air-pump G the under side of the main piston C, less the area of the differential plunger B, is subject to the steam-pressure and is available for actuating the pump. On the downward stroke the upper side of the main piston O and the under side also, less the area of the differential trunk or plunger B, are subject to the steam-pressure. There is therefore only an area equal to that of the differential trunk or plunger B available for actuating the pump, and the size of this differential plunger is accordingly arranged to permit the pump G to make its downward stroke at the speed desired.

For the purpose of securing greater oompactness and decreasing the height of the pump the pump-cover-i. e., the cover H of the pump-casin is arranged and constructed to support tIie main and differential cylinder A A and to form a closed communicating chamber h between the open end of the differential cylinder and the portion of the air-pump above the discharge-valves J.

By this construction for an air-pump working with surface condensers any leakage of steam from the under side of the main cylinder A past the differential plun er B will be absorbed by the water whic the pump is pumping durin its passage from the air-pump G, and as t s water is generally used for feeding boilers the arrangement will prevent any heat loss.

The movement of the steamvalve E, which may be the auxiliary valve of any well-known type of valve-gear, is secured by attaching to the air-pump bucket G a supplementary rod K, passing through a gland L on the pump-cover H, working on .a guide L, attached to the steam-cylinder A, and actuating through a cross-head M and levers N an attachment, such as the swivelin O, to the valve-spindle P, so as to move 't e steam-valve E synchronously with the movement of the air-pump bucket G.

Having now described my invention, what I claim, and desire to secure by Letters Patent of the United States, is

1. In a single-acting pump, the combination with a main steam-cylinder, of an auxiliary cylinder forming an extension of and of lesser diameter than the said main cylinder, and having an open lower end, a main piston or plunger fitting in said main cylinder, an auxiliary piston or plunger fitting in the said auxiliary cylinder, a pump-casing having a cover or upper extension H forming a chamber h separate from the ump-chamber and into which said pump-c amber discharges, said chamber h bein open at its top and communicating with t e chamber of the said open-ended auxiliary cylinder, and a pump P unger or piston operated from the said main and auxiliary pistons or plungers.

2. In a single-acting pump, the combination with a main steam-cylinder, of an auxiliary cylinder forming an extension of and of lesser diameter than the said main cylinder, and having an open lower end, a main piston or plunger fitting in said main cylinder, an auxiliary piston or plunger fitting in the said auxiliary cylinder, a pump-casing having a cover or upper extension H forming a chamber h separate from the pump-chamber and into which said pump-chamber discharges, said chamber it being open at its top and communicating with the chamber of the said open-ended auxiliary cylinder, a pump plunger or piston operated from the said main and auxiliary pistons or plungers, and a steam-valve operated from said pump piston or plunger.

3. In a single-acting pump, the combination with a main steam-cylinder, of an auxiliary cylinder forming an extension of and of lesser diameter than the said main cylinder, and having an open lower end, a main piston or plunger fitting in said main cylinder, an auxiliary piston or plunger fitting in the said auxiliary cylinder, a pump plunger or piston operated from the said main and auxiliary pistons or plungers, a steam-valve operated from said pump piston or plunger, and means for admitting a continuous supply of boilersteam to the lower face of said main piston or plunger.

In testimony whereof I have signed my name to this specification in the presence of;

two subscribing witnesses.

WILLIAM WEIR.

- Witnesses:

WALLACE FAIRWEATHER, JOHN MoCLEARY, Junr.

US28049205A 1905-09-28 1905-09-28 Steam-engine air-pump. Expired - Lifetime US825950A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731953A (en) * 1956-01-24 Hydraulic oscillators
US2752895A (en) * 1951-03-09 1956-07-03 Bendix Aviat Corp Hydraulic motor and control therefor
US2813489A (en) * 1954-06-28 1957-11-19 Nat Supply Co Hydraulic sub-surface pumping unit
US2866415A (en) * 1953-07-15 1958-12-30 Bratt John Hydraulic transformers
US2929327A (en) * 1957-07-12 1960-03-22 Kobe Inc High pressure pumping system
US2949857A (en) * 1956-07-19 1960-08-23 Kobe Inc Fluid operated pump with separate engine valve
US2983227A (en) * 1959-06-15 1961-05-09 Charles L English Fluid pressure operated engine for well pumps
US2996993A (en) * 1954-05-21 1961-08-22 Commercial Shearing Apparatus for the production of high pressure fluid
US3093122A (en) * 1960-11-28 1963-06-11 Texsteam Corp Fluid operated pump
US3234598A (en) * 1962-09-24 1966-02-15 Indiana General Corp Apparatus for pressing slurries

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731953A (en) * 1956-01-24 Hydraulic oscillators
US2752895A (en) * 1951-03-09 1956-07-03 Bendix Aviat Corp Hydraulic motor and control therefor
US2866415A (en) * 1953-07-15 1958-12-30 Bratt John Hydraulic transformers
US2996993A (en) * 1954-05-21 1961-08-22 Commercial Shearing Apparatus for the production of high pressure fluid
US2813489A (en) * 1954-06-28 1957-11-19 Nat Supply Co Hydraulic sub-surface pumping unit
US2949857A (en) * 1956-07-19 1960-08-23 Kobe Inc Fluid operated pump with separate engine valve
US2929327A (en) * 1957-07-12 1960-03-22 Kobe Inc High pressure pumping system
US2983227A (en) * 1959-06-15 1961-05-09 Charles L English Fluid pressure operated engine for well pumps
US3093122A (en) * 1960-11-28 1963-06-11 Texsteam Corp Fluid operated pump
US3234598A (en) * 1962-09-24 1966-02-15 Indiana General Corp Apparatus for pressing slurries

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