DE127702C - - Google Patents

Info

Publication number
DE127702C
DE127702C DENDAT127702D DE127702DA DE127702C DE 127702 C DE127702 C DE 127702C DE NDAT127702 D DENDAT127702 D DE NDAT127702D DE 127702D A DE127702D A DE 127702DA DE 127702 C DE127702 C DE 127702C
Authority
DE
Germany
Prior art keywords
jacket
drilling
shaft
drill
flaps
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
DENDAT127702D
Other languages
German (de)
English (en)
Publication of DE127702C publication Critical patent/DE127702C/de
Active legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D1/00—Sinking shafts
    • E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
    • E21D1/06—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Earth Drilling (AREA)
DENDAT127702D Active DE127702C (OSRAM)

Publications (1)

Publication Number Publication Date
DE127702C true DE127702C (OSRAM)

Family

ID=396280

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT127702D Active DE127702C (OSRAM)

Country Status (1)

Country Link
DE (1) DE127702C (OSRAM)

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