DE170716C - - Google Patents

Info

Publication number
DE170716C
DE170716C DENDAT170716D DE170716DA DE170716C DE 170716 C DE170716 C DE 170716C DE NDAT170716 D DENDAT170716 D DE NDAT170716D DE 170716D A DE170716D A DE 170716DA DE 170716 C DE170716 C DE 170716C
Authority
DE
Germany
Prior art keywords
rock
lever
foot lever
hammer
blow
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
DENDAT170716D
Other languages
German (de)
English (en)
Publication of DE170716C publication Critical patent/DE170716C/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
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • E21B6/06—Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device
    • E21B6/08—Separate drives for percussion and rotation

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
DENDAT170716D Active DE170716C (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
DE170716C true DE170716C (enrdf_load_html_response)

Family

ID=435739

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT170716D Active DE170716C (enrdf_load_html_response)

Country Status (1)

Country Link
DE (1) DE170716C (enrdf_load_html_response)

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