GB735363A - Improvements in and relating to support bars or cap pieces for mines and other uses - Google Patents

Improvements in and relating to support bars or cap pieces for mines and other uses

Info

Publication number
GB735363A
GB735363A GB8502/53A GB850253A GB735363A GB 735363 A GB735363 A GB 735363A GB 8502/53 A GB8502/53 A GB 8502/53A GB 850253 A GB850253 A GB 850253A GB 735363 A GB735363 A GB 735363A
Authority
GB
United Kingdom
Prior art keywords
key
mines
bars
male
relating
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
GB8502/53A
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.)
USINES ET ACIERIES ALLARD SA
Original Assignee
USINES ET ACIERIES ALLARD SA
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 USINES ET ACIERIES ALLARD SA filed Critical USINES ET ACIERIES ALLARD SA
Publication of GB735363A publication Critical patent/GB735363A/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)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
GB8502/53A 1952-07-03 1953-03-27 Improvements in and relating to support bars or cap pieces for mines and other uses Expired GB735363A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE735363X 1952-07-03

Publications (1)

Publication Number Publication Date
GB735363A true GB735363A (en) 1955-08-17

Family

ID=3879291

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8502/53A Expired GB735363A (en) 1952-07-03 1953-03-27 Improvements in and relating to support bars or cap pieces for mines and other uses

Country Status (4)

Country Link
BE (1) BE512605A (de)
DE (1) DE1024466B (de)
FR (1) FR1070980A (de)
GB (1) GB735363A (de)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE835586C (de) * 1949-11-25 1952-04-03 Hans Gerlach Grubenausbau, insbesondere fuer eine stempelfreie Abbaufront

Also Published As

Publication number Publication date
FR1070980A (fr) 1954-08-20
BE512605A (de)
DE1024466B (de) 1958-02-20

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