DE176934C - - Google Patents

Info

Publication number
DE176934C
DE176934C DENDAT176934D DE176934DA DE176934C DE 176934 C DE176934 C DE 176934C DE NDAT176934 D DENDAT176934 D DE NDAT176934D DE 176934D A DE176934D A DE 176934DA DE 176934 C DE176934 C DE 176934C
Authority
DE
Germany
Prior art keywords
pit
spring
punch
hanging wall
sleeve
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
DENDAT176934D
Other languages
German (de)
English (en)
Publication of DE176934C publication Critical patent/DE176934C/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
    • E21D15/50—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)
  • Springs (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Breakers (AREA)
DENDAT176934D Active DE176934C (cg-RX-API-DMAC7.html)

Publications (1)

Publication Number Publication Date
DE176934C true DE176934C (cg-RX-API-DMAC7.html)

Family

ID=441447

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT176934D Active DE176934C (cg-RX-API-DMAC7.html)

Country Status (1)

Country Link
DE (1) DE176934C (cg-RX-API-DMAC7.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE926722C (de) * 1948-10-02 1955-04-21 Ringfeder Gmbh Grubenstempel aus Stahl

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE926722C (de) * 1948-10-02 1955-04-21 Ringfeder Gmbh Grubenstempel aus Stahl

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