DE1024466B - Unterzug - Google Patents

Unterzug

Info

Publication number
DE1024466B
DE1024466B DEU2146A DEU0002146A DE1024466B DE 1024466 B DE1024466 B DE 1024466B DE U2146 A DEU2146 A DE U2146A DE U0002146 A DEU0002146 A DE U0002146A DE 1024466 B DE1024466 B DE 1024466B
Authority
DE
Germany
Prior art keywords
fork
wedge
shaped
cheeks
narrow
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.)
Pending
Application number
DEU2146A
Other languages
German (de)
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 DE1024466B publication Critical patent/DE1024466B/de
Pending 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)
DEU2146A 1952-07-03 1953-04-17 Unterzug Pending DE1024466B (de)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
DE1024466B true DE1024466B (de) 1958-02-20

Family

ID=3879291

Family Applications (1)

Application Number Title Priority Date Filing Date
DEU2146A Pending DE1024466B (de) 1952-07-03 1953-04-17 Unterzug

Country Status (4)

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

Citations (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

Patent Citations (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
BE512605A (he)
FR1070980A (fr) 1954-08-20
GB735363A (en) 1955-08-17

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