US1136840A - Automatic check-valve. - Google Patents

Automatic check-valve. Download PDF

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Publication number
US1136840A
US1136840A US1913764943A US1136840A US 1136840 A US1136840 A US 1136840A US 1913764943 A US1913764943 A US 1913764943A US 1136840 A US1136840 A US 1136840A
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United States
Prior art keywords
valve
automatic check
throat
water
openings
Prior art date
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
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Inventor
Edward Worster Shaw
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Individual
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Individual
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Priority to US1913764943 priority Critical patent/US1136840A/en
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Publication of US1136840A publication Critical patent/US1136840A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/01—Damping of valve members
    • F16K47/011—Damping of valve members by means of a dashpot
    • F16K47/0111—Damping of valve members by means of a dashpot the valve members comprising a plunger sliding within a fixed dashpot
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/785—With retarder or dashpot
    • Y10T137/7852—End of valve moves inside dashpot chamber
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7922—Spring biased
    • Y10T137/7925—Piston-type valves

Definitions

  • This automatic check valve has been principally devised for use with sand and slime pumps or withapparatus for pumping water bearing gritty matter, in which cases the wear of the valve is a constant trouble.
  • this valve I have devised a construction which results in an automatic check action against the return or back flow of the discharge or outflow water.
  • valve box or casing having the inlet Z2 and the outlet 0 as shown.
  • the head nut (Z, on which is integrally formed the circular hollow neck 6 in which latter the valve 7 works and is guided in its up and down movement, the external diameter of the said neck being less than the internal diameter of said throat.
  • the valve is cylindrical, and is constructed of leather or such like material.
  • the hollow neck terminates short of the valve seat j, and is made with the openings 9 which act as return passages for the back flow of water from the outlet 0 as seen by the dotted arrows, whereby the valve 7 is forced home on its seat j and so prevents such backflow water from returning into the chamber 6 immediately pumping operations cease. As soon as pumping is resumed the valve is Specification of Letters Patent.
  • a check valve comprising a casing formed with intersecting inlet and outlet passages having a horizontally flat valve seat at the point of intersection thereof, said casing also being formed with an internally threaded upstanding throat directl T over the valve seat, a nut having a portion thereof threaded in said throat, said threaded portion being provided with a depending cylindrical valve guide fully open at the bottom and having a straight contour with openings therethrough only at the upper extremity adjacent to the threaded portion of the nut, the openings in the guide-being for the entry of back-flow water from said out let passage and the guide terminating adjacent to and above the valve seat and having an external diameter which is less than the internal diameter of the said throat, and a cylindrical valve having opposite fiat ends and arranged interiorly of the said guide, the lower flat end of the valve being adapted to fully cover the horizontally fiat valve seat, the upper flat end of the valve being free to rise close to the lower end of the nut within the throat and close over the opening

Description

E. W. SHAW.
AUTOMATIC CHECK VALVE.
APPLICATION FILED MAY 1, 1913.
1,136,840. Pat nted Apr. 20, 1915.
b J B EDVARD WORSTER SHAW, OF BROWN HILL MINE, KALGOOR-LIE, WESTERN AUSTRALIA,
AUSTRALIA.
Application filed May 1, 1913.
To all whom it may concern Be it known that I, EDWARD lVoRs'rnn SHAW, a subject of the King of Great Britain, residing at Brown Hill Mine, Kalgoorlie, Western Australia, Australia, have invented a certain new and useful Improvement in Automatic Check-Valves, of which the following is a specification.
This automatic check valve has been principally devised for use with sand and slime pumps or withapparatus for pumping water bearing gritty matter, in which cases the wear of the valve is a constant trouble. In this valve I have devised a construction which results in an automatic check action against the return or back flow of the discharge or outflow water.
The construction of the valve will now be explained with the aid of the attached drawing, which shows a vertical sectional view thereof, and in same a is the valve box or casing having the inlet Z2 and the outlet 0 as shown.
In the upper part or throat a is interscrewed the head nut (Z, on which is integrally formed the circular hollow neck 6 in which latter the valve 7 works and is guided in its up and down movement, the external diameter of the said neck being less than the internal diameter of said throat. The valve is cylindrical, and is constructed of leather or such like material. The hollow neck terminates short of the valve seat j, and is made with the openings 9 which act as return passages for the back flow of water from the outlet 0 as seen by the dotted arrows, whereby the valve 7 is forced home on its seat j and so prevents such backflow water from returning into the chamber 6 immediately pumping operations cease. As soon as pumping is resumed the valve is Specification of Letters Patent.
Patented Apr. 20, 1915. Serial No. 764,943.
thereby lifted into the dotted position and the water allowed to flow into the outlet 0 as is denoted by the full-line arrows.
What I claim as my invention and desire to secure by Letters Patent is A check valve comprising a casing formed with intersecting inlet and outlet passages having a horizontally flat valve seat at the point of intersection thereof, said casing also being formed with an internally threaded upstanding throat directl T over the valve seat, a nut having a portion thereof threaded in said throat, said threaded portion being provided with a depending cylindrical valve guide fully open at the bottom and having a straight contour with openings therethrough only at the upper extremity adjacent to the threaded portion of the nut, the openings in the guide-being for the entry of back-flow water from said out let passage and the guide terminating adjacent to and above the valve seat and having an external diameter which is less than the internal diameter of the said throat, and a cylindrical valve having opposite fiat ends and arranged interiorly of the said guide, the lower flat end of the valve being adapted to fully cover the horizontally fiat valve seat, the upper flat end of the valve being free to rise close to the lower end of the nut within the throat and close over the openings solely in the upper portion of the guide and also to release said openings when the valve is closed to permit the back flow water to engage the upper flat end of the valve.
In witness whereof I have hereunto set my hand in presence of two witnesses.
EDlVARD WORSTER SHAW.
Witnesses F. W. CoLLn'rr, F. C. WVALTHAM.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.
US1913764943 1913-05-01 1913-05-01 Automatic check-valve. Expired - Lifetime US1136840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US1913764943 US1136840A (en) 1913-05-01 1913-05-01 Automatic check-valve.

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Application Number Priority Date Filing Date Title
US1913764943 US1136840A (en) 1913-05-01 1913-05-01 Automatic check-valve.

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US1136840A true US1136840A (en) 1915-04-20

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699150A (en) * 1950-12-09 1955-01-11 Int Harvester Co Mechanical and fluid pressure controlled valve
US4469126A (en) * 1981-11-04 1984-09-04 Copeland Corporation Discharge valve assembly for refrigeration compressors
US4543989A (en) * 1981-11-04 1985-10-01 Copeland Corporation Discharge valve assembly for refrigeration compressors
US20220357188A1 (en) * 2021-05-07 2022-11-10 Brown Hawk Technologies, LLC Venturi Flowmeter Including a Dynamically Variable Effective Constriction Ratio

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699150A (en) * 1950-12-09 1955-01-11 Int Harvester Co Mechanical and fluid pressure controlled valve
US4469126A (en) * 1981-11-04 1984-09-04 Copeland Corporation Discharge valve assembly for refrigeration compressors
US4543989A (en) * 1981-11-04 1985-10-01 Copeland Corporation Discharge valve assembly for refrigeration compressors
US20220357188A1 (en) * 2021-05-07 2022-11-10 Brown Hawk Technologies, LLC Venturi Flowmeter Including a Dynamically Variable Effective Constriction Ratio

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