DE261502C - - Google Patents

Info

Publication number
DE261502C
DE261502C DENDAT261502D DE261502DA DE261502C DE 261502 C DE261502 C DE 261502C DE NDAT261502 D DENDAT261502 D DE NDAT261502D DE 261502D A DE261502D A DE 261502DA DE 261502 C DE261502 C DE 261502C
Authority
DE
Germany
Prior art keywords
rollers
lever
handle
rod
crosspiece
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
DENDAT261502D
Other languages
German (de)
English (en)
Publication of DE261502C publication Critical patent/DE261502C/de
Active legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B1/00—Percussion drilling
    • E21B1/02—Surface drives for drop hammers or percussion drilling, e.g. with a cable

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
DENDAT261502D Active DE261502C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE261502C true DE261502C (enrdf_load_stackoverflow)

Family

ID=519057

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT261502D Active DE261502C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE261502C (enrdf_load_stackoverflow)

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