GB376938A - Improvements in or relating to fluid operated feeding-means for rock-drills and other tools - Google Patents

Improvements in or relating to fluid operated feeding-means for rock-drills and other tools

Info

Publication number
GB376938A
GB376938A GB1864431A GB1864431A GB376938A GB 376938 A GB376938 A GB 376938A GB 1864431 A GB1864431 A GB 1864431A GB 1864431 A GB1864431 A GB 1864431A GB 376938 A GB376938 A GB 376938A
Authority
GB
United Kingdom
Prior art keywords
percussive
air
drills
feed
cylinder
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
GB1864431A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1864431A priority Critical patent/GB376938A/en
Publication of GB376938A publication Critical patent/GB376938A/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)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)

Abstract

376,938. Percussive drills. HOLMAN, P. M., HOLMAN, K. J., of Holman Bros., and COCK, B., Woodbine, both in Camborne, Cornwall. June 27, 1931, No. 18644. [Class 124.] The percussive drill 10 is mounted to slide on guides mounted on the feed cylinder 13. The valve 11 controls the air supply to the percussive cylinder and to the conduits 35, 36 which in turn connect with the tubes 22, 23 which attach the drill to the feed piston rod 18. Air from the tube 22 enters the conduit 31, the hollow piston rod 18 and hole 19 to feed the tool forward, withdrawal being effected by air from tube 23 and conduits 32, 33, 21 entering the feed cylinder, air to the percussive cylinder being shut off meanwhile.
GB1864431A 1931-06-27 1931-06-27 Improvements in or relating to fluid operated feeding-means for rock-drills and other tools Expired GB376938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1864431A GB376938A (en) 1931-06-27 1931-06-27 Improvements in or relating to fluid operated feeding-means for rock-drills and other tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1864431A GB376938A (en) 1931-06-27 1931-06-27 Improvements in or relating to fluid operated feeding-means for rock-drills and other tools

Publications (1)

Publication Number Publication Date
GB376938A true GB376938A (en) 1932-07-21

Family

ID=10115992

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1864431A Expired GB376938A (en) 1931-06-27 1931-06-27 Improvements in or relating to fluid operated feeding-means for rock-drills and other tools

Country Status (1)

Country Link
GB (1) GB376938A (en)

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