GB737748A - Improvements in or relating to adjustable hydraulic mine props or the like - Google Patents

Improvements in or relating to adjustable hydraulic mine props or the like

Info

Publication number
GB737748A
GB737748A GB14355/52A GB1435552A GB737748A GB 737748 A GB737748 A GB 737748A GB 14355/52 A GB14355/52 A GB 14355/52A GB 1435552 A GB1435552 A GB 1435552A GB 737748 A GB737748 A GB 737748A
Authority
GB
United Kingdom
Prior art keywords
spring
cylinder
cap
piston
rod
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
GB14355/52A
Other languages
English (en)
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.)
EISENWERK WANHEIM GmbH
Original Assignee
EISENWERK WANHEIM 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 EISENWERK WANHEIM GmbH filed Critical EISENWERK WANHEIM GmbH
Publication of GB737748A publication Critical patent/GB737748A/en
Expired legal-status Critical Current

Links

Classifications

    • 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)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Safety Valves (AREA)
GB14355/52A 1951-06-09 1952-06-06 Improvements in or relating to adjustable hydraulic mine props or the like Expired GB737748A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE737748X 1951-06-09

Publications (1)

Publication Number Publication Date
GB737748A true GB737748A (en) 1955-09-28

Family

ID=6642646

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14355/52A Expired GB737748A (en) 1951-06-09 1952-06-06 Improvements in or relating to adjustable hydraulic mine props or the like

Country Status (3)

Country Link
BE (1) BE511952A (enrdf_load_stackoverflow)
FR (1) FR1058141A (enrdf_load_stackoverflow)
GB (1) GB737748A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE511952A (enrdf_load_stackoverflow)
FR1058141A (fr) 1954-03-15

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