FR1010120A - Iron support device for mine clearance sites - Google Patents

Iron support device for mine clearance sites

Info

Publication number
FR1010120A
FR1010120A FR1010120DA FR1010120A FR 1010120 A FR1010120 A FR 1010120A FR 1010120D A FR1010120D A FR 1010120DA FR 1010120 A FR1010120 A FR 1010120A
Authority
FR
France
Prior art keywords
support device
iron support
mine clearance
clearance sites
sites
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
Other languages
French (fr)
Inventor
Hans Gerlach
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 filed Critical
Application granted granted Critical
Publication of FR1010120A publication Critical patent/FR1010120A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/22—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with member, pin, cross- piece, or the like, ruptured, sheared through, or permanently deformed upon excessive pressure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/43—Details of wedges
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
FR1010120D 1948-07-30 1948-07-30 Iron support device for mine clearance sites Expired FR1010120A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1010120T 1948-07-30

Publications (1)

Publication Number Publication Date
FR1010120A true FR1010120A (en) 1952-06-09

Family

ID=9568768

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1010120D Expired FR1010120A (en) 1948-07-30 1948-07-30 Iron support device for mine clearance sites

Country Status (4)

Country Link
BE (1) BE485602A (en)
FR (1) FR1010120A (en)
GB (1) GB660738A (en)
NL (1) NL70049C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1022992B (en) * 1951-05-15 1958-01-23 Gutehoffnungshuette Sterkrade Pit support cap with articulated connection
DE7033832U (en) * 1970-09-11 1971-01-28 Gewerk Eisenhuette Westfalia HINGED CAP FOR HIKING EXTENSION OF MOUNTAIN MINE EXTRACTIONS.

Also Published As

Publication number Publication date
GB660738A (en) 1951-11-14
NL70049C (en)
BE485602A (en)

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