GB652701A - Support of workings in underground development - Google Patents

Support of workings in underground development

Info

Publication number
GB652701A
GB652701A GB7782/48A GB778248A GB652701A GB 652701 A GB652701 A GB 652701A GB 7782/48 A GB7782/48 A GB 7782/48A GB 778248 A GB778248 A GB 778248A GB 652701 A GB652701 A GB 652701A
Authority
GB
United Kingdom
Prior art keywords
links
link
wedge
web
chain
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
GB7782/48A
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.)
RECH S IND ET SCIENT ET
Original Assignee
RECH S IND ET SCIENT ET
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 RECH S IND ET SCIENT ET filed Critical RECH S IND ET SCIENT ET
Publication of GB652701A publication Critical patent/GB652701A/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)
  • Tents Or Canopies (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
GB7782/48A 1947-03-20 1948-03-15 Support of workings in underground development Expired GB652701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR652701X 1947-03-20

Publications (1)

Publication Number Publication Date
GB652701A true GB652701A (en) 1951-05-02

Family

ID=9005391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7782/48A Expired GB652701A (en) 1947-03-20 1948-03-15 Support of workings in underground development

Country Status (6)

Country Link
US (1) US2554210A (de)
BE (1) BE481299A (de)
DE (1) DE808581C (de)
FR (4) FR58703E (de)
GB (1) GB652701A (de)
NL (1) NL68832C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107902A (en) * 1958-12-29 1963-10-22 Joy Mfg Co Method of supporting mine roofs and supporting means therefor

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2991097A (en) * 1948-07-08 1961-07-04 Vanwersch Aloys Connecting structure for beams of a roof support or the like
DE977123C (de) * 1948-07-30 1965-03-11 Karl Gerlach Gelenkverbindung fuer unter der Wirkung einer Spannvorrichtung verschwenkbare Kappen fuer den Grubenausbau
US2729945A (en) * 1949-03-09 1956-01-10 Gerlach Karl Mine filling frame structure comprising props and pivotally connected girders
US2749712A (en) * 1949-11-25 1956-06-12 Gerlach Karl Mine supporting structure for working mines
FR1130143A (fr) * 1955-07-27 1957-01-31 Rallonge articulée pour supports de mines
DE1169881B (de) * 1960-09-09 1964-05-14 Hermann Schwarz Kommanditgesel In der Laengsrichtung in mehrere im wesentlichen gleiche Stuecke aufgeteilte Kappe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107902A (en) * 1958-12-29 1963-10-22 Joy Mfg Co Method of supporting mine roofs and supporting means therefor

Also Published As

Publication number Publication date
FR59723E (fr) 1954-07-16
US2554210A (en) 1951-05-22
FR58581E (fr) 1954-01-27
DE808581C (de) 1951-07-16
NL68832C (de)
FR58703E (fr) 1954-03-22
FR960300A (de) 1950-04-15
BE481299A (de)

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