GB729171A - Improvements relating to beams for mine supports - Google Patents

Improvements relating to beams for mine supports

Info

Publication number
GB729171A
GB729171A GB3266652A GB3266652A GB729171A GB 729171 A GB729171 A GB 729171A GB 3266652 A GB3266652 A GB 3266652A GB 3266652 A GB3266652 A GB 3266652A GB 729171 A GB729171 A GB 729171A
Authority
GB
United Kingdom
Prior art keywords
beams
supports
mine
improvements relating
wedge
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
GB3266652A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB729171A publication Critical patent/GB729171A/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)
  • Moulds, Cores, Or Mandrels (AREA)
  • Working Measures On Existing Buildindgs (AREA)
GB3266652A 1951-12-29 1952-12-23 Improvements relating to beams for mine supports Expired GB729171A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1951R0007973 DE919344C (de) 1951-12-29 1951-12-29 Gelenkverbindung mit zwei Gelenkstellen von Kappen zum Strebausbau, insbesondere fuer die stempelfreie Abbaufront

Publications (1)

Publication Number Publication Date
GB729171A true GB729171A (en) 1955-05-04

Family

ID=7397773

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3266652A Expired GB729171A (en) 1951-12-29 1952-12-23 Improvements relating to beams for mine supports

Country Status (5)

Country Link
BE (1) BE516589A (de)
DE (1) DE919344C (de)
FR (1) FR1069747A (de)
GB (1) GB729171A (de)
NL (2) NL86462C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180802A (en) * 1960-12-20 1965-04-27 Combustion Eng Boiling water nuclear reactor system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1186819B (de) * 1955-02-04 1965-02-11 Aloys Vanwersch Gelenkverbindung von Kappen fuer den Strebausbau in Untertagebetrieben

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE819233C (de) * 1948-10-02 1951-10-31 Gelsenkirchener Bergwerks Akti Gelenkverbindung, insbesondere fuer die Verbindungzweier Stahlkappen im Grubenbetrieb

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180802A (en) * 1960-12-20 1965-04-27 Combustion Eng Boiling water nuclear reactor system

Also Published As

Publication number Publication date
DE919344C (de) 1954-10-21
BE516589A (de)
NL86462C (de)
NL174889B (nl)
FR1069747A (fr) 1954-07-12

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