US755938A - Air-pump for steam-engines. - Google Patents

Air-pump for steam-engines. Download PDF

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Publication number
US755938A
US755938A US11929102A US1902119291A US755938A US 755938 A US755938 A US 755938A US 11929102 A US11929102 A US 11929102A US 1902119291 A US1902119291 A US 1902119291A US 755938 A US755938 A US 755938A
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Prior art keywords
air
casing
pump
liner
steam
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US11929102A
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Robert Richardson
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/04—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports

Definitions

  • Patented Mfarch Q9 1.904...
  • This invention relates to air-pumps of the vertical-cylinder type; and it has for its object to provide a double-acting pump from which the air will be forced through the outlet-valve orifices in advance of the water, so that efficient working is insured.
  • the invention is illustrated, way of eX- ample, in the accompanying drawing, which shows avertical section of the improved double-acting air-pump.
  • the pump-casing A is adapted to be attached to the side of the condenser of a steam-engine, from which water of condensation flows into the casing A by an inlet C to an annular passage D, from which it passages through perforations e in a liner E, fitted in the casing.
  • a liner reciprocates a combined piston and plunger F, attached to a piston-rod G, passing up-through a cover I-I on the liner E, and a stuffing-box I im the cover J of the casing A.
  • the lower or plunger end of the pistion is preferably of convex form, as shown, and the lower end of the casing A is
  • the piston descends under the perforations e, the water flows through them into the inside of the liner, and on the ascent of the piston the water,with any air or vapor which rises above it, is forced up through Valves K in the cover I-I into the outer casing A, from which it passes by an outlet L to the hot-well or other receptacle.
  • the air is by the further descent of the plunger driven in advance of the water through valveorifices N in a partition O into the discharge end of the casing.
  • the pocket M is formed ⁇ mainly at one side of the casing and is inclined or tapered as shown, by the dotted line P, toward the opposite side when the air-pump is intended for marine use, so as to-insure that notwithstandingl any list of the ship the air will be trapped and discharged in advance of the water.
  • the ⁇ relative capacities of the pocket M and the water-space from the bottom of the casing A to the lower edge of the liner E should be such that the water-level will not be raised to the edge of the liner before the descent of the plunger, thus trapping the air within the liner o r before the air has been driven into the pocket.
  • the piston or plunger is in contact with and is sealed by water in both the up and down strokes, and the possibility of air passing between a looselyfitting piston and the casing or liner is obviated, so that an eflicient double-acting airpump is produced.
  • a double-acting vertical air-pump comprising a combined piston and plunger F, acasing A having an opening L, a cylindrical liner E fitted in said casing and having orifices e connecting the inside of the liner with an annularpassage D without the liner, a cover H on said liner, valves K on said cover connecting ⁇ the interior of the liner with the casing A, a pocket M forming an extension of said casing and valves N connecting said pocket with the upper end of the casing substantially as and for the purpose set forth.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

No. 755,938. A i PATENTED MAE. 29, 1904.
E. RICHARDSON. AIE PUMP EOE STEAM ENGINES.
` APPLICATION FILED AUG. 11, 1902.
N0 MODEL.
vof corresponding shape.
Patented Mfarch Q9, 1.904...
PATENT OFFICE.
ROBERT RICHARDSON, OF GLASGOW, SCOTLAND.l
AIR-PUMP FOR STEAM-ENGINES.
SPECIFICATION forming part of Letters Patent No. 755,938, dated March 29, 1904.
Application filed August l1, 1902.
T0 all whom, 'it may concern.-
Be it known that I, ROBERT RICHARDSON, engineer, of 16 Jamieson street, Govanhill, Glasgow, Scotland, have invented certain new and useful Improvements in Air-Pumps for Steam- Engines, (which have been patented in Great Britain,`\lo. 1,7 26,dated January 221902,) and I do hereby declare that the following is a full, clear, and exact description of the same.
This invention relates to air-pumps of the vertical-cylinder type; and it has for its object to provide a double-acting pump from which the air will be forced through the outlet-valve orifices in advance of the water, so that efficient working is insured. l The invention is illustrated, way of eX- ample, in the accompanying drawing, which shows avertical section of the improved double-acting air-pump.
As therein shown, the pump-casing A is adapted to be attached to the side of the condenser of a steam-engine, from which water of condensation flows into the casing A by an inlet C to an annular passage D, from which it passages through perforations e in a liner E, fitted in the casing. In the liner reciprocates a combined piston and plunger F, attached to a piston-rod G, passing up-through a cover I-I on the liner E, and a stuffing-box I im the cover J of the casing A. The lower or plunger end of the pistion is preferably of convex form, as shown, and the lower end of the casing A is When the piston descends under the perforations e, the water flows through them into the inside of the liner, and on the ascent of the piston the water,with any air or vapor which rises above it, is forced up through Valves K in the cover I-I into the outer casing A, from which it passes by an outlet L to the hot-well or other receptacle. While the piston rises, water accumulating and passing from the condenser passes through the orifices e to the lower end of the casing A, and on the downstroke of the piston its plunger end displaces the accumulated water, so that it rises over the level of the lower end of the liner E and traps the air or vapor in an annular Serial No. 119,291. (No model.)
pocket M, forming an extension of the casing.
The air is by the further descent of the plunger driven in advance of the water through valveorifices N in a partition O into the discharge end of the casing. The pocket M is formed `mainly at one side of the casing and is inclined or tapered as shown, by the dotted line P, toward the opposite side when the air-pump is intended for marine use, so as to-insure that notwithstandingl any list of the ship the air will be trapped and discharged in advance of the water. The `relative capacities of the pocket M and the water-space from the bottom of the casing A to the lower edge of the liner E should be such that the water-level will not be raised to the edge of the liner before the descent of the plunger, thus trapping the air within the liner o r before the air has been driven into the pocket.
By the arrangement described the piston or plunger is in contact with and is sealed by water in both the up and down strokes, and the possibility of air passing between a looselyfitting piston and the casing or liner is obviated, so that an eflicient double-acting airpump is produced.
Having now described my invention, what I claim, and desire to secure by Letters Patent,
A double-acting vertical air-pump comprising a combined piston and plunger F, acasing A having an opening L, a cylindrical liner E fitted in said casing and having orifices e connecting the inside of the liner with an annularpassage D without the liner, a cover H on said liner, valves K on said cover connecting` the interior of the liner with the casing A,a pocket M forming an extension of said casing and valves N connecting said pocket with the upper end of the casing substantially as and for the purpose set forth. Y
In witness whereof I have hereunto set my hand in presence of two witnesses.
ROBERT RICHARDSON. Witnesses:
WALLACE CRANsToN FAIRWEATHER, J No. ARMSTRONG, Jr.
US11929102A 1902-08-11 1902-08-11 Air-pump for steam-engines. Expired - Lifetime US755938A (en)

Priority Applications (1)

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US11929102A US755938A (en) 1902-08-11 1902-08-11 Air-pump for steam-engines.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11929102A US755938A (en) 1902-08-11 1902-08-11 Air-pump for steam-engines.

Publications (1)

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