BE419950A - - Google Patents

Info

Publication number
BE419950A
BE419950A BE419950DA BE419950A BE 419950 A BE419950 A BE 419950A BE 419950D A BE419950D A BE 419950DA BE 419950 A BE419950 A BE 419950A
Authority
BE
Belgium
Prior art keywords
prop
adjustable
metal
irons
support
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE419950A publication Critical patent/BE419950A/fr

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14Telescopic props
    • E21D15/28Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/285Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Toys (AREA)
BE419950D BE419950A (en:Method)

Publications (1)

Publication Number Publication Date
BE419950A true BE419950A (en:Method)

Family

ID=82127

Family Applications (1)

Application Number Title Priority Date Filing Date
BE419950D BE419950A (en:Method)

Country Status (1)

Country Link
BE (1) BE419950A (en:Method)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975697C (de) * 1948-10-02 1962-05-24 Gutehoffnungshuette Sterkrade Schlossrahmen fuer Grubenstempel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975697C (de) * 1948-10-02 1962-05-24 Gutehoffnungshuette Sterkrade Schlossrahmen fuer Grubenstempel

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