DE224531C - - Google Patents

Info

Publication number
DE224531C
DE224531C DENDAT224531D DE224531DA DE224531C DE 224531 C DE224531 C DE 224531C DE NDAT224531 D DENDAT224531 D DE NDAT224531D DE 224531D A DE224531D A DE 224531DA DE 224531 C DE224531 C DE 224531C
Authority
DE
Germany
Prior art keywords
rollers
rope
springs
roller
axis
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
DENDAT224531D
Other languages
German (de)
English (en)
Publication of DE224531C publication Critical patent/DE224531C/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)
DENDAT224531D Active DE224531C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE224531C true DE224531C (enrdf_load_stackoverflow)

Family

ID=485257

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT224531D Active DE224531C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE224531C (enrdf_load_stackoverflow)

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