US724132A - Rotary pump. - Google Patents

Rotary pump. Download PDF

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Publication number
US724132A
US724132A US8783101A US1901087831A US724132A US 724132 A US724132 A US 724132A US 8783101 A US8783101 A US 8783101A US 1901087831 A US1901087831 A US 1901087831A US 724132 A US724132 A US 724132A
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United States
Prior art keywords
shell
pump
cylinder
recess
valve
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Expired - Lifetime
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US8783101A
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Edward F Smith
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Individual
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Priority to US8783101A priority Critical patent/US724132A/en
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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
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member

Definitions

  • My invention relates to improvements in rotary pumps; and it consists, substantially, in the construction of a rotary pump in such a manner that the point of contact between the periphery of the cylinder and the shell valve mounted in a recess in the shell, which is so held in contact with the periphery of the cylinder by the Weight of the fluid being pumped that the leakage therethrough is reduced to a minimum.
  • This and other features of the pump are hereinafter set forth and explained, and illustrated in the accompanying drawings, in which- Figure l is a viefw in elevation of my improved rotary pump.
  • Fig. 2 is a vertical section of the same on the line a; w in Fig. 1.
  • Fig. 3 is a vertical section of the casing with the cylinder removed.
  • Fig. 4 is a View in elevation of the packing-valve of the same detached from the pump.
  • A is the shell of the pump, ct the inlet, and a the outlet thereof, and B and B the heads on the shell A, provided with bearings b b, in which the shaft 0, supporting the cylthe inner surface of the shell of the pump throughout the greater portion or all of the revolution of the cylinder D.
  • a packing-valve E is preferably pivoted by means of bearings e e, near the lower edge thereof.
  • the upper edge e of the packing-valve E normally contacts with the periphery of the cylinder D, and the weight of the fluid at the outlet at, communicating through the vertical passage A with the recess or depression A, acts upon the back of the packing-valve E and operates to constantly retain the upper edge 6' thereof in close contact with the periphery of the cylinder D, and at the same time any wear on the packing-valve E is automatically taken up, so that the leakage of the fluid between the shell and the cylinder at this point is reduced to a minimum.

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

Description

PATENTED MAR. 31, 1903. E; E. SMITH. ROTARY PUMP.
APPLICATION FILED DEG. 30, 1901.
N0 MODEL.
172 we 22 2'02." Zdwa m f)? e 586 s.
UNITED STATES PATENT ()FFICE.
EDWARD F. SMITI-I, on BRADFORD, PENNSYLVANIA.
ROTARY PUMP.
SPECIFICATION forming part of Letters Patent No. 724,132, dated Maren e1, 1903.
Application filed December 30, 1901. 'Serial 110.87.831. (No model.)
To aZZ whom it may concern.
Be it known that I, EDWARD F. SMITH, a citizen of the United States, residingatBradford, in the county of McKean and State of Penn- 5 sylvania, have invented certain new and useful Improvements in Rotary Pumps; and I do hereby declare the following to be a full,-
clear, and exact description of the invention,
such as will enable others skilled in the art l to which it appertains to make and use the of the pump is provided with a packing same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, forming part of this specification.
My invention relates to improvements in rotary pumps; and it consists, substantially, in the construction of a rotary pump in such a manner that the point of contact between the periphery of the cylinder and the shell valve mounted in a recess in the shell, which is so held in contact with the periphery of the cylinder by the Weight of the fluid being pumped that the leakage therethrough is reduced to a minimum. This and other features of the pump are hereinafter set forth and explained, and illustrated in the accompanying drawings, in which- Figure l is a viefw in elevation of my improved rotary pump. Fig. 2 is a vertical section of the same on the line a; w in Fig. 1. Fig. 3 is a vertical section of the casing with the cylinder removed. Fig. 4 is a View in elevation of the packing-valve of the same detached from the pump.
In the drawings thus illustrating my invention, Ais the shell of the pump, ct the inlet, and a the outlet thereof, and B and B the heads on the shell A, provided with bearings b b, in which the shaft 0, supporting the cylthe inner surface of the shell of the pump throughout the greater portion or all of the revolution of the cylinder D. At the point of contact between the cylinder D and the inside of the shell A there is a recess or depression A in the inside of the shell, which extends nearly the entire length of the cylinder D therein, and in this recess or depres sion A a packing-valve E is preferably pivoted by means of bearings e e, near the lower edge thereof. The upper edge e of the packing-valve E normally contacts with the periphery of the cylinder D, and the weight of the fluid at the outlet at, communicating through the vertical passage A with the recess or depression A, acts upon the back of the packing-valve E and operates to constantly retain the upper edge 6' thereof in close contact with the periphery of the cylinder D, and at the same time any wear on the packing-valve E is automatically taken up, so that the leakage of the fluid between the shell and the cylinder at this point is reduced to a minimum. On the central part of the upper edge e of the packing-valve E there is a vertical projection E, adapted to prevent the upper edge of the valve E catching theedges of the cylinder-valves 01.
Over the end of the inlet-opening a I make a central bridge F, which bridge is substantially a continuation of the side of the shell A, and at each side of this bridge F there are inlet-openings ff, through which the fluid passes from the inlet a into the shell A, as is clearly shown in Figs. 1 and 3. This construction operates to entirely prevent the undue wear of the outer ends of the cylindervalves d on account of the inlet-opening so common in pumps of this kind.
Having thus fully described my invention, so as to enable others to construct and use the same, what I claim as new, and desire to secure by Letters Patent of the United States, 1s
1. The combination in a rotary pump, of a pump-shell having a recess or depression in one side of its inner surface, a rotary cylinder mounted in said shell so that its periphery practically coincides with the inner boundary of the recess or depression in the pump-shell, and a packing-valve in said depression or recess the upper portion of which contacts with the periphery of the rotary cylinder, substantially as and for the purpose set forth.
loo
2. The combination in a rotary pump of a I pump-shell having a recess or depression inside thereof communicating with the outlet of the pump, a rotary cylinder in said shell, the periphery of which practically coincides with the inner boundary of said recess or depression, a packing-valve pivoted in said recess or chamber so as to contact with the periphery of the cylinder, a bridge over the inlet of the pump, having inlet-openings at each side thereof, and radially moving valves 10 in said cylinder, substantially as and for the purpose set forth.
In testimony whereof I affix my signature in presence of two witnesses.
EDWARD F. SMITH. Witnesses:
HAROLD M. STURGEON, FLORENCE STOCKERT.
US8783101A 1901-12-30 1901-12-30 Rotary pump. Expired - Lifetime US724132A (en)

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US8783101A US724132A (en) 1901-12-30 1901-12-30 Rotary pump.

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US8783101A US724132A (en) 1901-12-30 1901-12-30 Rotary pump.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498715A (en) * 1945-03-03 1950-02-28 Treadwell Engineering Company Sliding vane pump
US2522824A (en) * 1944-08-29 1950-09-19 Thomas L Hicks Rotary compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522824A (en) * 1944-08-29 1950-09-19 Thomas L Hicks Rotary compressor
US2498715A (en) * 1945-03-03 1950-02-28 Treadwell Engineering Company Sliding vane pump

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