GB822029A - Improvements in or relating to scroll-type drilling tools - Google Patents

Improvements in or relating to scroll-type drilling tools

Info

Publication number
GB822029A
GB822029A GB818256A GB818256A GB822029A GB 822029 A GB822029 A GB 822029A GB 818256 A GB818256 A GB 818256A GB 818256 A GB818256 A GB 818256A GB 822029 A GB822029 A GB 822029A
Authority
GB
United Kingdom
Prior art keywords
bit
scroll
relating
spigot
shank
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
GB818256A
Inventor
John Spencer Barker
Geoffrey Albert Guppy
Brian Griffith Fish
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents Ltd
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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Priority to GB818256A priority Critical patent/GB822029A/en
Publication of GB822029A publication Critical patent/GB822029A/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
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts

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)
  • Earth Drilling (AREA)

Abstract

822,029. Drills and bits. COAL INDUSTRY (PATENTS) Ltd. March 13, 1957 [March 15, 1956], No. 8182/56. Class 83 (3). A rotary drill-bit for rock has a recess 3 fitting a spigot 2 in a shank 1 and is held by a pin (not shown), passing through a hole 6 in the bit and a slot 7 in the spigot. The recess and spigot are of square crosssection and effect alignment of flukes on the bit and shank. Water is supplied to holes 11 in the bit through an axial hole 12 in the shank.
GB818256A 1956-03-15 1956-03-15 Improvements in or relating to scroll-type drilling tools Expired GB822029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB818256A GB822029A (en) 1956-03-15 1956-03-15 Improvements in or relating to scroll-type drilling tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB818256A GB822029A (en) 1956-03-15 1956-03-15 Improvements in or relating to scroll-type drilling tools

Publications (1)

Publication Number Publication Date
GB822029A true GB822029A (en) 1959-10-21

Family

ID=9847410

Family Applications (1)

Application Number Title Priority Date Filing Date
GB818256A Expired GB822029A (en) 1956-03-15 1956-03-15 Improvements in or relating to scroll-type drilling tools

Country Status (1)

Country Link
GB (1) GB822029A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149329A (en) * 1983-10-03 1985-06-12 Kennametal Inc A two-prong rotary bit, especially for use with roof drills, and insert therefor
US4550791A (en) * 1983-10-03 1985-11-05 Kennametal Inc. Two-prong rotary bit, especially for use with roof drills, and insert therefor
GB2199520A (en) * 1986-12-29 1988-07-13 Boart Int Ltd Boring bit for coal or soft rock
GB2212091A (en) * 1987-11-12 1989-07-19 Boart Hardmetals Drilling equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149329A (en) * 1983-10-03 1985-06-12 Kennametal Inc A two-prong rotary bit, especially for use with roof drills, and insert therefor
US4550791A (en) * 1983-10-03 1985-11-05 Kennametal Inc. Two-prong rotary bit, especially for use with roof drills, and insert therefor
GB2199520A (en) * 1986-12-29 1988-07-13 Boart Int Ltd Boring bit for coal or soft rock
GB2212091A (en) * 1987-11-12 1989-07-19 Boart Hardmetals Drilling equipment
GB2212091B (en) * 1987-11-12 1992-01-22 Boart Hardmetals Drilling equipment

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