GB857393A - Improvements in or relating to valves for fluids - Google Patents

Improvements in or relating to valves for fluids

Info

Publication number
GB857393A
GB857393A GB3028958A GB3028958A GB857393A GB 857393 A GB857393 A GB 857393A GB 3028958 A GB3028958 A GB 3028958A GB 3028958 A GB3028958 A GB 3028958A GB 857393 A GB857393 A GB 857393A
Authority
GB
United Kingdom
Prior art keywords
valve member
prop
valve
spring
pressure
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
Application number
GB3028958A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB857393A publication Critical patent/GB857393A/en
Expired legal-status Critical Current

Links

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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/044—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with more than one spring
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/512—Arrangement of valves
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Safety Valves (AREA)

Abstract

857,393. Hydraulic pit props. BOSCH G.m.b.H., R. Sept. 23, 1958 [Sept. 28, 1957], No. 30289/58. Class 20(2) [Also in Group XXIX] An overflow or pressure relief valve for a hydraulic pit prop comprising a tubular housing 18 mounted in a cavity 17 formed in the cover 16 of a telescopic pit prop 1, 2, slidably mounts a first valve member 36 urged by a spring 83 towards a second valve member 67 slidably mounted in the first valve member and urged by a plurality of plate springs 80 towards the first valve member. The pressure of the liquid in the lower or pressure chamber 13 of the prop transmitted through a tube 24 connected to a piston 7 separating the chamber 13 from the upper or storage chamber 22 of the prop acts on both valve members and when this pressure assisted by the loading of the spring 83 overcomes the loading of the plate springs 8 both valves move together until the valve member 36 is arrested by a stop-ring 52 whence the valve member 67 moves away from the valve member 36 to open the valve to transfer liquid from the pressure chamber to the storage chamber. A pin 60 carried by the valve member 36 and passing through slots 69 in the valve member 67 may on engagement by a lightly spring- loaded plunger 73 operable by a lever 91 having a cam face 92 move the valve member 36 against its spring 83 away from the valve member 67 to open the valve and collapse the prop. The lever 91 on turning it through 180 degrees may also be used to drag the prop away. Instead of being operated by the lever, the plunger 73 may be operated by a piston-andcylinder.
GB3028958A 1957-09-28 1958-09-23 Improvements in or relating to valves for fluids Expired GB857393A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB46227A DE1059733B (en) 1957-09-28 1957-09-28 Overflow valve for a pressurized system

Publications (1)

Publication Number Publication Date
GB857393A true GB857393A (en) 1960-12-29

Family

ID=32047234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3028958A Expired GB857393A (en) 1957-09-28 1958-09-23 Improvements in or relating to valves for fluids

Country Status (4)

Country Link
BE (1) BE571508A (en)
DE (1) DE1059733B (en)
FR (1) FR1214927A (en)
GB (1) GB857393A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2494160A (en) * 2011-08-31 2013-03-06 Bifold Fluidpower Ltd Valve

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1090610B (en) * 1959-03-11 1960-10-13 Bwg Bergwerk Walzwerk Overpressure valve set, especially for hydraulic pit rams
DE1137406B (en) * 1960-06-30 1962-10-04 Kronprinz Ag Hydraulic pit ram
DE1189938B (en) * 1962-08-31 1965-04-01 Kloeckner Werke Ag Hydraulic pit ram
DE1217317B (en) * 1963-07-01 1966-05-26 Salzgitter Maschinen Ag Relief valve for hydraulic pit rams or hydraulic pit support

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE105325C (en) *
GB536796A (en) * 1940-03-13 1941-05-27 Automotive Prod Co Ltd Improvements in or relating to fluid pressure reducing valve devices
DE925525C (en) * 1947-09-27 1955-03-24 Davidson Corp Device for clamping a lithographic plate on a plate carrier
DE823381C (en) * 1950-08-06 1951-12-03 Rolf Schroedter Dr Ing Pressure relief valve
DE941948C (en) * 1952-08-22 1956-04-19 Electraulic Presses Ltd Spring-loaded overpressure protection
CH322405A (en) * 1953-11-17 1957-06-15 Dunlop Rubber Co Method of manufacturing a control mechanism for pressurized fluid and mechanism obtained by this method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2494160A (en) * 2011-08-31 2013-03-06 Bifold Fluidpower Ltd Valve

Also Published As

Publication number Publication date
BE571508A (en)
FR1214927A (en) 1960-04-12
DE1059733B (en) 1959-06-18

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