DE139563C - - Google Patents

Info

Publication number
DE139563C
DE139563C DENDAT139563D DE139563DA DE139563C DE 139563 C DE139563 C DE 139563C DE NDAT139563 D DENDAT139563 D DE NDAT139563D DE 139563D A DE139563D A DE 139563DA DE 139563 C DE139563 C DE 139563C
Authority
DE
Germany
Prior art keywords
ropes
rollers
lifting
air
chains
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
DENDAT139563D
Other languages
German (de)
English (en)
Publication of DE139563C publication Critical patent/DE139563C/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
    • E21B1/04—Devices for reversing the movement of the rod or cable at the surface

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)
DENDAT139563D Active DE139563C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
DE139563C true DE139563C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=407298

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT139563D Active DE139563C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
DE (1) DE139563C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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