DE215094C - - Google Patents

Info

Publication number
DE215094C
DE215094C DENDAT215094D DE215094DA DE215094C DE 215094 C DE215094 C DE 215094C DE NDAT215094 D DENDAT215094 D DE NDAT215094D DE 215094D A DE215094D A DE 215094DA DE 215094 C DE215094 C DE 215094C
Authority
DE
Germany
Prior art keywords
punch
sand
parts
conical
filling
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
DENDAT215094D
Other languages
German (de)
English (en)
Publication of DE215094C publication Critical patent/DE215094C/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
    • E21D15/18—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with one part resting on a supporting medium, e.g. rubber, sand, bitumen, lead, located in the other part, with or without expulsion or displacement of the medium upon excessive pressure
    • 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
    • E21D15/54—Details of the ends of props

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)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
DENDAT215094D Active DE215094C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE215094C true DE215094C (enrdf_load_stackoverflow)

Family

ID=476623

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT215094D Active DE215094C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE215094C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE960084C (de) * 1953-10-15 1957-03-14 Bochumer Eisen Heintzmann Grubenausbau aus geflanschten Rinnenprofilen mit Fussplatte

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE960084C (de) * 1953-10-15 1957-03-14 Bochumer Eisen Heintzmann Grubenausbau aus geflanschten Rinnenprofilen mit Fussplatte

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