GB870502A - Improvements in breather valve arrangements for hydraulic props - Google Patents

Improvements in breather valve arrangements for hydraulic props

Info

Publication number
GB870502A
GB870502A GB3282757A GB3282757A GB870502A GB 870502 A GB870502 A GB 870502A GB 3282757 A GB3282757 A GB 3282757A GB 3282757 A GB3282757 A GB 3282757A GB 870502 A GB870502 A GB 870502A
Authority
GB
United Kingdom
Prior art keywords
breather valve
valve
prop
valve arrangements
hydraulic props
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
GB3282757A
Inventor
Dennis Henry Cannon
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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment Ltd
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 Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to GB3282757A priority Critical patent/GB870502A/en
Priority to DED29166A priority patent/DE1081849B/en
Priority to FR777059A priority patent/FR1214968A/en
Publication of GB870502A publication Critical patent/GB870502A/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
    • F16K17/10—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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Closures For Containers (AREA)
  • Safety Valves (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Abstract

870,502. Valves. DOWTY MINING EQUIPMENT Ltd. Oct. 17, 1958 [Oct. 21, 1957], No. 32827/57. Class 135. [Also in Group X] An hydraulic pit prop is provided with a spring-closed breather valve 6 which is opened at the same time as the release valve unless the prop is tilted. The release valve is operated by a spring-pressed plunger 28 which is coupled by a lever 20 to the valve 6 through a slidable cup 7 containing a ball 10 which breaks the connection when the prop is tilted. Fig. 4 (not shown) shows a mushroom type of breather valve.
GB3282757A 1957-10-21 1957-10-21 Improvements in breather valve arrangements for hydraulic props Expired GB870502A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3282757A GB870502A (en) 1957-10-21 1957-10-21 Improvements in breather valve arrangements for hydraulic props
DED29166A DE1081849B (en) 1957-10-21 1958-10-18 Hydraulic pit ram with a breathing valve that can be operated by operating means
FR777059A FR1214968A (en) 1957-10-21 1958-10-20 Improvement in breather for hydraulic struts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3282757A GB870502A (en) 1957-10-21 1957-10-21 Improvements in breather valve arrangements for hydraulic props

Publications (1)

Publication Number Publication Date
GB870502A true GB870502A (en) 1961-06-14

Family

ID=10344586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3282757A Expired GB870502A (en) 1957-10-21 1957-10-21 Improvements in breather valve arrangements for hydraulic props

Country Status (3)

Country Link
DE (1) DE1081849B (en)
FR (1) FR1214968A (en)
GB (1) GB870502A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108071829A (en) * 2016-11-15 2018-05-25 定州四方诚信畜牧科技有限公司 A kind of new automatic breather valve

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1004877B (en) * 1956-10-17 1957-03-21 Gutehoffnungshuette Sterkrade Vent valve for tiltable fluid containers, preferably of hydraulic pit rams

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108071829A (en) * 2016-11-15 2018-05-25 定州四方诚信畜牧科技有限公司 A kind of new automatic breather valve

Also Published As

Publication number Publication date
DE1081849B (en) 1960-05-19
FR1214968A (en) 1960-04-13

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