GB225356A - Improvement relating to miners' hand-operated drills and the like - Google Patents

Improvement relating to miners' hand-operated drills and the like

Info

Publication number
GB225356A
GB225356A GB28083/23A GB2808323A GB225356A GB 225356 A GB225356 A GB 225356A GB 28083/23 A GB28083/23 A GB 28083/23A GB 2808323 A GB2808323 A GB 2808323A GB 225356 A GB225356 A GB 225356A
Authority
GB
United Kingdom
Prior art keywords
ratchet
hand
miners
spindle
drill
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
GB28083/23A
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 GB28083/23A priority Critical patent/GB225356A/en
Publication of GB225356A publication Critical patent/GB225356A/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

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)
  • Drilling And Boring (AREA)

Abstract

225,356. Thompson, J. T. Nov. 7,1923. Ratchet braces.-A hand-operated self-feeding ratchet drill &c. is fitted with a secondary ratchet attachment whereby the drill may be driven independently of the feeding means. An ordinary ratchet brace e with a feed-screw j is provided with a spindle c on which is mounted a drill spindle b, half-balls s being interposed between these spindles to take thrust. The spindle b is driven through a ratchet a screwed thereon, by a pawl-lever, feed being applied by the ratchet f.
GB28083/23A 1923-11-07 1923-11-07 Improvement relating to miners' hand-operated drills and the like Expired GB225356A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB28083/23A GB225356A (en) 1923-11-07 1923-11-07 Improvement relating to miners' hand-operated drills and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28083/23A GB225356A (en) 1923-11-07 1923-11-07 Improvement relating to miners' hand-operated drills and the like

Publications (1)

Publication Number Publication Date
GB225356A true GB225356A (en) 1924-12-04

Family

ID=10269982

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28083/23A Expired GB225356A (en) 1923-11-07 1923-11-07 Improvement relating to miners' hand-operated drills and the like

Country Status (1)

Country Link
GB (1) GB225356A (en)

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