GB750706A - Cap connection for mine roof support - Google Patents

Cap connection for mine roof support

Info

Publication number
GB750706A
GB750706A GB1249/54A GB124954A GB750706A GB 750706 A GB750706 A GB 750706A GB 1249/54 A GB1249/54 A GB 1249/54A GB 124954 A GB124954 A GB 124954A GB 750706 A GB750706 A GB 750706A
Authority
GB
United Kingdom
Prior art keywords
pawl
bolt
mine roof
movement
engageable
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
GB1249/54A
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.)
fur UNTERNEHMUNGEN DER EISEN U
Aktiengesellschaft fuer Unternehmungen der Eisen und Stahlindustrie
Original Assignee
fur UNTERNEHMUNGEN DER EISEN U
Aktiengesellschaft fuer Unternehmungen der Eisen und Stahlindustrie
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 fur UNTERNEHMUNGEN DER EISEN U, Aktiengesellschaft fuer Unternehmungen der Eisen und Stahlindustrie filed Critical fur UNTERNEHMUNGEN DER EISEN U
Publication of GB750706A publication Critical patent/GB750706A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
GB1249/54A 1953-01-17 1954-01-15 Cap connection for mine roof support Expired GB750706A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE750706X 1953-01-17

Publications (1)

Publication Number Publication Date
GB750706A true GB750706A (en) 1956-06-20

Family

ID=6650691

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1249/54A Expired GB750706A (en) 1953-01-17 1954-01-15 Cap connection for mine roof support

Country Status (4)

Country Link
BE (1) BE525753A (enrdf_load_stackoverflow)
FR (1) FR1091452A (enrdf_load_stackoverflow)
GB (1) GB750706A (enrdf_load_stackoverflow)
NL (1) NL87036C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE525753A (enrdf_load_stackoverflow)
NL87036C (enrdf_load_stackoverflow)
FR1091452A (fr) 1955-04-12

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