US220520A - Improvement in rotary pumps - Google Patents

Improvement in rotary pumps Download PDF

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Publication number
US220520A
US220520A US220520DA US220520A US 220520 A US220520 A US 220520A US 220520D A US220520D A US 220520DA US 220520 A US220520 A US 220520A
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Prior art keywords
plunger
pump
improvement
rotary pumps
valve
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/356—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C2/3566—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along more than one line or surface

Definitions

  • Figure l is a side view of my pump, with one of the covering-plates broken away to show the interior. A portion ofthe shell is also broken away to expose the water-Way contained therein.
  • Fig. 2 is a side View of the pump, a small portion of the shell being broken away to show the bearing of the valve.
  • Fig. 3 represents the plunger and valve in their relative positions, the body of the pump being omitted.
  • the letter a denotes the body of the pump, covered by the plates a, which have cast on them the valve-bearings a".
  • the inductionpipe I represent by the letter b, and the eduction-pipe by c.
  • the central shaft is designated by letter d. On this shaft is fixed a single rotating plunger, 0, extending from side to side of the pump and of a somewhat elliptical form.
  • the dogvalve f is pivoted by hearings on its ends in the side plates, at, and just above the rotating plunger. Its forward Vibrating side bears on the rotating plunger, which revolves toward it, and it is more efiectually held to its contact with the plunger by the spring g. In any case, Where this spring would not be strong enough to force the valve back to position after it had once been raised, it will be found that the wing f, projecting inward, as it would then do, will be struck by the plunger, and thereby cause the valve to fall back to its position of contact with the plunger.
  • the fluid that is being pumped finds its way through the induction-pipe b to the water-way h, from which it is emptied into the body of the pump, and finally is forced out through the ednction-pipe c.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)

Description

L! CHAPMAN. Rotary-Pump.
No. 220,520. Patented Oct-14, 1879.
y n i N.PETEHS, PHOTO-LITHOGRAPHER, WASmNGToN D c.
UNITED STATES PATENT OEEIoE.
LUKE CHAPMAN, OF COLLIN SVILLE, CONNECTICUT.
IMPROVEMENT IN ROTARY PUMPS.
Specification forming part of Letters Patent No. 220,520, dated October 14, 1879; application filed March 7, 1879.
To all whom it may concern:
Be it known that I LUKE CHAPMAN, of Collinsville, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements pertaining to Rotary Pumps, of which the following is a specification, the accompanying drawings being referred to, and in which Figure l is a side view of my pump, with one of the covering-plates broken away to show the interior. A portion ofthe shell is also broken away to expose the water-Way contained therein. Fig. 2 is a side View of the pump, a small portion of the shell being broken away to show the bearing of the valve. Fig. 3 represents the plunger and valve in their relative positions, the body of the pump being omitted.
The letter a denotes the body of the pump, covered by the plates a, which have cast on them the valve-bearings a". The inductionpipe I represent by the letter b, and the eduction-pipe by c. The central shaft is designated by letter d. On this shaft is fixed a single rotating plunger, 0, extending from side to side of the pump and of a somewhat elliptical form.
The dogvalve f is pivoted by hearings on its ends in the side plates, at, and just above the rotating plunger. Its forward Vibrating side bears on the rotating plunger, which revolves toward it, and it is more efiectually held to its contact with the plunger by the spring g. In any case, Where this spring would not be strong enough to force the valve back to position after it had once been raised, it will be found that the wing f, projecting inward, as it would then do, will be struck by the plunger, and thereby cause the valve to fall back to its position of contact with the plunger.
The fluid that is being pumped finds its way through the induction-pipe b to the water-way h, from which it is emptied into the body of the pump, and finally is forced out through the ednction-pipe c.
It will be seen from the drawings, Fig. 1, that the ends of the plunger are substantially in contact with the circular wall of the pumpchamber from the mouth of the water-way h to the point substantially opposite such month, at which point the cut-away k commences, and extends to the point 70. This cut-away allows the water to commence to escape around the end of the plunger the moment the plunger end reaches it, with the resulting tendency of preventing what is called hammering, and lessening the power required to operate the plunger; and
I claim as my invention- In combination, in a rotary pump, the body and side plates at a, the water-way h, the rotating plunger 6, the valve f, and the cut-away k k in the circular wall of the pump-chamber, commencing at a point substantially opposite the mouth of the induction water-way, all substantially as described, and for the purpose set forth.
LUKE CHAPMAN.
Witnesses:
OLIVER F. PERRY, R. F. GAYLORD.
US220520D Improvement in rotary pumps Expired - Lifetime US220520A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040219049A1 (en) * 2001-07-31 2004-11-04 Rantala Velkko Kalevi Method for increasing the effect to be produced in a motor, pump or the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040219049A1 (en) * 2001-07-31 2004-11-04 Rantala Velkko Kalevi Method for increasing the effect to be produced in a motor, pump or the like
US20070131197A1 (en) * 2001-07-31 2007-06-14 Rantala Velkko K Method for increasing the effect to be produced in a motor, pump or the like
US7600501B2 (en) 2001-07-31 2009-10-13 Velkko Kalevi Rantala Method for increasing the effect to be produced in a motor, pump or the like

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