BE374712A - - Google Patents

Info

Publication number
BE374712A
BE374712A BE374712DA BE374712A BE 374712 A BE374712 A BE 374712A BE 374712D A BE374712D A BE 374712DA BE 374712 A BE374712 A BE 374712A
Authority
BE
Belgium
Application number
Priority date (The priority date 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 date listed.)
Publication of BE374712A publication Critical patent/BE374712A/xx

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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/083—Cam, rack or like feed mechanisms

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)
  • Percussive Tools And Related Accessories (AREA)
BE374712D 1930-03-11 BE374712A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US559912XA 1930-03-11 1930-03-11

Publications (1)

Publication Number Publication Date
BE374712A true BE374712A (fr)

Family

ID=22001426

Family Applications (1)

Application Number Title Priority Date Filing Date
BE374712D BE374712A (fr) 1930-03-11

Country Status (3)

Country Link
BE (1) BE374712A (fr)
DE (1) DE559912C (fr)
FR (1) FR704830A (fr)

Also Published As

Publication number Publication date
FR704830A (fr) 1931-05-27
DE559912C (de) 1932-09-26

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