US1719825A - Pump for refrigerants and the like - Google Patents

Pump for refrigerants and the like Download PDF

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Publication number
US1719825A
US1719825A US108799A US10879926A US1719825A US 1719825 A US1719825 A US 1719825A US 108799 A US108799 A US 108799A US 10879926 A US10879926 A US 10879926A US 1719825 A US1719825 A US 1719825A
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United States
Prior art keywords
lever
pump
refrigerants
piston
casing
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US108799A
Inventor
Thomas E Murray
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Individual filed Critical Individual
Priority to US108799A priority Critical patent/US1719825A/en
Application granted granted Critical
Publication of US1719825A publication Critical patent/US1719825A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/02—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders arranged oppositely relative to main shaft
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/04—Measures to avoid lubricant contaminating the pumped fluid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/50—Bridged by diverse connector

Definitions

  • Fig. 1 is a plan of the pump with the cylinder in section
  • F ig. 2 is a vertical section of the same
  • P Fig. 3 is a cross section on the line 33 of The cylinder 1 has heads 2 at opposite ends with interposed plates 3 carrying valves indicated diagrammatically at 4 and 5 for admission and egress of the fluid respectively, leading through ports 6 and 7 and passages 8 and 9 to suction and compression tubes 10 and 11.
  • a piston 12 is provided, with heads 13 at opposite ends, working in the portions of the cylinder which are beyond an opening 14 provided in the side of the latter.
  • the piston is provided with an annular groove 15 around its middle portion which registers with a small duct 16 communicating with the vac uum or suction passage 8; so that any small quantity of the refrigerant leaking past the piston heads will be withdrawn through the duct.
  • the piston is actuated by the inner arm 17 of a lever passing through the opening in the side of the cylinder and having its free end 111 a rocker 18 set in a transverse opening through the middle of the piston; The end of the arm slides in the rocker as the arm is oscillated, thus providing a compact rocking and sliding connection.
  • the side of the piston is cut away to provide a flared opening 19 for the end of the arm to move in.
  • a tubular casing 20 (split horizontally as shown in Fig. 3) is fastened to and in communication with the cylinder and surrounds the arm 17, with room for the latter to swing freely.
  • the outer end of the casing 20 has 1926. Serial No. 108,799.
  • the outer portion 23 of the lever carries a driving block 24 arranged to slide on the lever and having :1 lug which embraces the crank pin 25 by which the arm is rocked.
  • the loose pivotal joint of the lever in the casing 20 is sealed by a rubber tube 26 having a small end which is clamped around a groove in the outer arm of the lever by a ring 27 and has a larger end which is similarly clamped around the casing 20 by a ring 28.
  • tent of movement of the arm is very slight and is taken up through the length of the rubber tube with comparatively little distortion so that the seal will last a long time in good condition.
  • Various other flexible fluid-tight materials may be used instead of rubber, such for example, as known compositions containing rubber.
  • the sliding connection of the driving block 24 and of the rocker 18 with the lever, and the loose pivot joint permit a certain lon itudinal play of the lever, and the seal is well adapted to yield to such movement without injury.
  • a pump for refrigerants and the like the combination of a piston, a cylinder, a split casing open to the cylinder at one end and extending laterally therefrom, a lever en gaging the piston at one end and extending substantially straight through the outer end of the casing, the lever having an annular groove directly engaging the end portion of the casing in rocking relation, and a flexible fluid tight tube attached to the of the lever and to the wall of the casing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Description

July 9,1929. MURRAY I 1,719,825
PUMP FOR REFRIGERANTS AND THE LIKE Filed May 13, 1926 Elmvzmtoz 351 I M e lbd/ Patented July 9, 1929.
UNITED STATES THOMAS E. MURRAY, OE BROOKLYN, NEW YORK.
PUMP FOR REFRIGERANTS AND THE LIKE.
Application filed. May 13,
In a companion application No. 109,075, filed May 14, 1926, I have described a pump for sulphur dioxide, ammonia or other refrigerating or volatile fluid which is simple and compact and Well secured against leakage. The present invention provides improvements in the same class of apparatus. The accompanying drawings illustrate an embodiment of the invention.
Fig. 1 is a plan of the pump with the cylinder in section;
F ig. 2 is a vertical section of the same;
P Fig. 3 is a cross section on the line 33 of The cylinder 1 has heads 2 at opposite ends with interposed plates 3 carrying valves indicated diagrammatically at 4 and 5 for admission and egress of the fluid respectively, leading through ports 6 and 7 and passages 8 and 9 to suction and compression tubes 10 and 11. A piston 12 is provided, with heads 13 at opposite ends, working in the portions of the cylinder which are beyond an opening 14 provided in the side of the latter. The piston is provided with an annular groove 15 around its middle portion which registers with a small duct 16 communicating with the vac uum or suction passage 8; so that any small quantity of the refrigerant leaking past the piston heads will be withdrawn through the duct.
The piston is actuated by the inner arm 17 of a lever passing through the opening in the side of the cylinder and having its free end 111 a rocker 18 set in a transverse opening through the middle of the piston; The end of the arm slides in the rocker as the arm is oscillated, thus providing a compact rocking and sliding connection. The side of the piston is cut away to provide a flared opening 19 for the end of the arm to move in. A tubular casing 20 (split horizontally as shown in Fig. 3) is fastened to and in communication with the cylinder and surrounds the arm 17, with room for the latter to swing freely. The outer end of the casing 20 has 1926. Serial No. 108,799.
a rounded flange 21 fitting loosely in an annular groove 22 of the lever so as to permit the slight rocking movement required.
The outer portion 23 of the lever carries a driving block 24 arranged to slide on the lever and having :1 lug which embraces the crank pin 25 by which the arm is rocked.
The loose pivotal joint of the lever in the casing 20 is sealed by a rubber tube 26 having a small end which is clamped around a groove in the outer arm of the lever by a ring 27 and has a larger end which is similarly clamped around the casing 20 by a ring 28. tent of movement of the arm is very slight and is taken up through the length of the rubber tube with comparatively little distortion so that the seal will last a long time in good condition. Various other flexible fluid-tight materials may be used instead of rubber, such for example, as known compositions containing rubber. The sliding connection of the driving block 24 and of the rocker 18 with the lever, and the loose pivot joint permit a certain lon itudinal play of the lever, and the seal is well adapted to yield to such movement without injury.
Various modifications may be made by those skilled in the art without departure from the invention as defined in the following claim.
What I claim is:
In a pump for refrigerants and the like, the combination of a piston, a cylinder, a split casing open to the cylinder at one end and extending laterally therefrom, a lever en gaging the piston at one end and extending substantially straight through the outer end of the casing, the lever having an annular groove directly engaging the end portion of the casing in rocking relation, and a flexible fluid tight tube attached to the of the lever and to the wall of the casing.
In witness whereof, I have hereunto signed my name.
The ex- THOMAS E. MURRAY.
US108799A 1926-05-13 1926-05-13 Pump for refrigerants and the like Expired - Lifetime US1719825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US108799A US1719825A (en) 1926-05-13 1926-05-13 Pump for refrigerants and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US108799A US1719825A (en) 1926-05-13 1926-05-13 Pump for refrigerants and the like

Publications (1)

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US1719825A true US1719825A (en) 1929-07-09

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US108799A Expired - Lifetime US1719825A (en) 1926-05-13 1926-05-13 Pump for refrigerants and the like

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2853228A (en) * 1945-05-28 1958-09-23 Underwood Newton Oscillatory pump
US3053194A (en) * 1960-11-25 1962-09-11 Chamberlain Corp Enclosed liquid pump
US3078863A (en) * 1957-04-12 1963-02-26 Bell Aerospace Corp Electro hydraulic servo device
US3744936A (en) * 1968-03-13 1973-07-10 Lear Siegler Inc Piston type pump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2853228A (en) * 1945-05-28 1958-09-23 Underwood Newton Oscillatory pump
US3078863A (en) * 1957-04-12 1963-02-26 Bell Aerospace Corp Electro hydraulic servo device
US3053194A (en) * 1960-11-25 1962-09-11 Chamberlain Corp Enclosed liquid pump
US3744936A (en) * 1968-03-13 1973-07-10 Lear Siegler Inc Piston type pump

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