GB520341A - Improvements in or relating to percussive drills - Google Patents

Improvements in or relating to percussive drills

Info

Publication number
GB520341A
GB520341A GB3009838A GB3009838A GB520341A GB 520341 A GB520341 A GB 520341A GB 3009838 A GB3009838 A GB 3009838A GB 3009838 A GB3009838 A GB 3009838A GB 520341 A GB520341 A GB 520341A
Authority
GB
United Kingdom
Prior art keywords
hammer
driven
tool holder
return
bore
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
GB3009838A
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 GB3009838A priority Critical patent/GB520341A/en
Publication of GB520341A publication Critical patent/GB520341A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • E21B6/06—Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/0009—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts
    • B23Q1/0018—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means
    • B23Q1/0027—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means between moving parts between which an uninterrupted energy-transfer connection is maintained
    • B23Q1/0036—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts comprising hydraulic means between moving parts between which an uninterrupted energy-transfer connection is maintained one of those parts being a tool
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids

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)
  • Drilling And Boring (AREA)

Abstract

520,341. Percussive drills. COLLINS, C. W., and HENDERSON, W. M. Oct. 18, 1938, Nos. 30098/38 and 23167/39. [Class 124] In a percussive drill, air, gas, or liquid is supplied by. a pipe 19 and passes through a non-return inlet valve 12 and a port 14, which is uncovered when the power-driven reciprocating hammer 2 commences its return stroke, into a pump chamber formed between the working end face 7 of the hammer and the opposed working end face 8 of the tool holder 4, and is compressed at each working stroke of the hammer and ejected through a bore 11 in the tool holder, past a non-return discharge valve 13, and through the bore 9 of the tool 10. The hammer 2 may be driven by an internal combustion engine 1 in opposition to springs 3, and the hammer and tool holder may be fitted with piston rings 15, 16. Compressed air may be supplied to the pipe 19 by means of an air pump 17, 18 driven by means of a spring-controlled lever 20 rocked by a cam 21 on a shaft 22 driven from the engine 1. The tool holder may be rotated step-wise by means of a spur wheel 23 in sliding mesh with a pinion 24 which is driven through a variable ratchet wheel and pawl mechanism 25 and bevel gearing 26 from the lever 20.
GB3009838A 1938-10-18 1938-10-18 Improvements in or relating to percussive drills Expired GB520341A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3009838A GB520341A (en) 1938-10-18 1938-10-18 Improvements in or relating to percussive drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3009838A GB520341A (en) 1938-10-18 1938-10-18 Improvements in or relating to percussive drills

Publications (1)

Publication Number Publication Date
GB520341A true GB520341A (en) 1940-04-22

Family

ID=10302240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3009838A Expired GB520341A (en) 1938-10-18 1938-10-18 Improvements in or relating to percussive drills

Country Status (1)

Country Link
GB (1) GB520341A (en)

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