DE212702C - - Google Patents

Info

Publication number
DE212702C
DE212702C DENDAT212702D DE212702DA DE212702C DE 212702 C DE212702 C DE 212702C DE NDAT212702 D DENDAT212702 D DE NDAT212702D DE 212702D A DE212702D A DE 212702DA DE 212702 C DE212702 C DE 212702C
Authority
DE
Germany
Prior art keywords
insert
wedge
shaft part
shoe
punch
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.)
Active
Application number
DENDAT212702D
Other languages
German (de)
English (en)
Publication of DE212702C publication Critical patent/DE212702C/de
Active legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK 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
    • E21D15/20—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with pawl, pin, cross-piece, or the like engaging with ratchet teeth, notches, holes, or the like, spaced apart at intervals
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/066—Shores or struts; Chocks telescopic with parts held together by positive means by a wedge
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/52—Extensible units located above or below standard props
    • E21D15/526—Extensible units located above or below standard props for step-by-step extension of the prop

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)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
DENDAT212702D Active DE212702C (OSRAM)

Publications (1)

Publication Number Publication Date
DE212702C true DE212702C (OSRAM)

Family

ID=474423

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT212702D Active DE212702C (OSRAM)

Country Status (1)

Country Link
DE (1) DE212702C (OSRAM)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE895135C (de) * 1944-06-25 1953-11-02 Gutehoffnungshuette Oberhausen Zweiteiliger Grubenstempel
DE1027614B (de) * 1953-08-05 1958-04-10 Becorit Grubenausbau Gmbh Grubenstempel, insbesondere fuer steile und halbsteile Lagerung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE895135C (de) * 1944-06-25 1953-11-02 Gutehoffnungshuette Oberhausen Zweiteiliger Grubenstempel
DE1027614B (de) * 1953-08-05 1958-04-10 Becorit Grubenausbau Gmbh Grubenstempel, insbesondere fuer steile und halbsteile Lagerung

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