GB712963A - Improvements in mine roof support caps - Google Patents

Improvements in mine roof support caps

Info

Publication number
GB712963A
GB712963A GB3066152A GB3066152A GB712963A GB 712963 A GB712963 A GB 712963A GB 3066152 A GB3066152 A GB 3066152A GB 3066152 A GB3066152 A GB 3066152A GB 712963 A GB712963 A GB 712963A
Authority
GB
United Kingdom
Prior art keywords
bar
pawl
hook
mine roof
extensions
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
GB3066152A
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
Original Assignee
fur UNTERNEHMUNGEN DER EISEN U
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 filed Critical fur UNTERNEHMUNGEN DER EISEN U
Publication of GB712963A publication Critical patent/GB712963A/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)
  • Emergency Lowering Means (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
GB3066152A 1951-12-05 1952-12-03 Improvements in mine roof support caps Expired GB712963A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1951A0014650 DE975231C (de) 1951-12-05 1951-12-05 Gelenkige Kappenverbindung

Publications (1)

Publication Number Publication Date
GB712963A true GB712963A (en) 1954-08-04

Family

ID=6923259

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3066152A Expired GB712963A (en) 1951-12-05 1952-12-03 Improvements in mine roof support caps

Country Status (4)

Country Link
DE (1) DE975231C (enrdf_load_stackoverflow)
FR (1) FR1067366A (enrdf_load_stackoverflow)
GB (1) GB712963A (enrdf_load_stackoverflow)
NL (2) NL174344B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2915328A (en) * 1957-07-08 1959-12-01 Hugh Wood And Company Ltd Bars for supporting the roof in mines and for like purposes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE942322C (de) * 1954-03-16 1956-05-03 Ulrich Wichmann Gelenkverbindung von Kappen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE481680A (enrdf_load_stackoverflow) *
BE475032A (enrdf_load_stackoverflow) * 1946-08-28
DE803992C (de) * 1949-07-03 1951-04-16 Wilhelm Reppel Aus aneinandergesetzten Gliedern bestehende Kappe fuer den Grubenausbau, insbesondere den Strebausbau
DE801717C (de) * 1949-07-12 1951-01-22 Mannesmann Ag Kappenverbinder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2915328A (en) * 1957-07-08 1959-12-01 Hugh Wood And Company Ltd Bars for supporting the roof in mines and for like purposes

Also Published As

Publication number Publication date
FR1067366A (fr) 1954-06-15
NL174344B (nl)
NL88621C (enrdf_load_stackoverflow)
DE975231C (de) 1961-10-12

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