FR855963A - Feeding device for rock drills - Google Patents

Feeding device for rock drills

Info

Publication number
FR855963A
FR855963A FR855963DA FR855963A FR 855963 A FR855963 A FR 855963A FR 855963D A FR855963D A FR 855963DA FR 855963 A FR855963 A FR 855963A
Authority
FR
France
Prior art keywords
feeding device
rock drills
drills
rock
feeding
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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
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 by Ingersoll Rand Co filed Critical Ingersoll Rand Co
Application granted granted Critical
Publication of FR855963A publication Critical patent/FR855963A/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)
  • Actuator (AREA)
  • Earth Drilling (AREA)
FR855963D 1938-06-11 1939-06-08 Feeding device for rock drills Expired FR855963A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US529694XA 1938-06-11 1938-06-11

Publications (1)

Publication Number Publication Date
FR855963A true FR855963A (en) 1940-05-24

Family

ID=21981076

Family Applications (1)

Application Number Title Priority Date Filing Date
FR855963D Expired FR855963A (en) 1938-06-11 1939-06-08 Feeding device for rock drills

Country Status (3)

Country Link
BE (1) BE434813A (en)
FR (1) FR855963A (en)
GB (1) GB529694A (en)

Also Published As

Publication number Publication date
GB529694A (en) 1940-11-26
BE434813A (en)

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