FR1053123A - Control of the compressed air intake for air-operated perforators, in particular rotary perforators in mines - Google Patents

Control of the compressed air intake for air-operated perforators, in particular rotary perforators in mines

Info

Publication number
FR1053123A
FR1053123A FR1053123DA FR1053123A FR 1053123 A FR1053123 A FR 1053123A FR 1053123D A FR1053123D A FR 1053123DA FR 1053123 A FR1053123 A FR 1053123A
Authority
FR
France
Prior art keywords
perforators
mines
operated
control
compressed air
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.)
Expired
Application number
Other languages
French (fr)
Inventor
Albrecht Grafer
Sse Hugo Nu
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.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR1053123A publication Critical patent/FR1053123A/en
Expired 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
    • 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
    • E21B19/086—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 with a fluid-actuated cylinder

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)
FR1053123D 1951-04-05 1952-03-27 Control of the compressed air intake for air-operated perforators, in particular rotary perforators in mines Expired FR1053123A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1053123X 1951-04-05

Publications (1)

Publication Number Publication Date
FR1053123A true FR1053123A (en) 1954-02-01

Family

ID=7717685

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1053123D Expired FR1053123A (en) 1951-04-05 1952-03-27 Control of the compressed air intake for air-operated perforators, in particular rotary perforators in mines

Country Status (3)

Country Link
BE (1) BE510410A (en)
FR (1) FR1053123A (en)
NL (2) NL87581C (en)

Also Published As

Publication number Publication date
NL87581C (en)
BE510410A (en)
NL167484B (en)

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