GB599451A - An improved boring bit for use in drilling coal, stone and the like - Google Patents

An improved boring bit for use in drilling coal, stone and the like

Info

Publication number
GB599451A
GB599451A GB18936/45A GB1893645A GB599451A GB 599451 A GB599451 A GB 599451A GB 18936/45 A GB18936/45 A GB 18936/45A GB 1893645 A GB1893645 A GB 1893645A GB 599451 A GB599451 A GB 599451A
Authority
GB
United Kingdom
Prior art keywords
bit
stone
drill rod
cutting portions
fluting
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
GB18936/45A
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.)
CHARLES FREDERICK HAY
Original Assignee
CHARLES FREDERICK HAY
Filing date
Publication date
Application filed by CHARLES FREDERICK HAY filed Critical CHARLES FREDERICK HAY
Publication of GB599451A publication Critical patent/GB599451A/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
    • E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits

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)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

599,451. Drills. HAY, C. F., LYALL, E., and SHAHP, W. July 24, 1946, No. 18936/45. [Class 83 (iii)] In a bit for drilling stone or coal having forked cutting portions and helical fluting arranged to communicate with helical fluting on a drill rod so that core material is continuously removed from the bit, the portion of the body 7 between the cutting portions 3, 4 and the shank 1 is cut away to form a shoulder 7a and give clearance behind the cutting portions. The shank has a square or other non-circular section, collar 8 engaging a corresponding recess in the drill rod to ensure that the flutes 5 on the bit lead naturally into the fluting on the drill rod.
GB18936/45A 1946-07-24 An improved boring bit for use in drilling coal, stone and the like Expired GB599451A (en)

Publications (1)

Publication Number Publication Date
GB599451A true GB599451A (en) 1948-03-12

Family

ID=1734309

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18936/45A Expired GB599451A (en) 1946-07-24 An improved boring bit for use in drilling coal, stone and the like

Country Status (1)

Country Link
GB (1) GB599451A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614814A (en) * 1948-12-23 1952-10-21 Joy Mfg Co Coal drill bit
US2648525A (en) * 1948-06-09 1953-08-11 Phipps Orville Core-breaking drill bit for doubleflute augers
US2702698A (en) * 1949-09-08 1955-02-22 Colmol Company Bit for rotary coal cutting machines
GB2199520A (en) * 1986-12-29 1988-07-13 Boart Int Ltd Boring bit for coal or soft rock

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648525A (en) * 1948-06-09 1953-08-11 Phipps Orville Core-breaking drill bit for doubleflute augers
US2614814A (en) * 1948-12-23 1952-10-21 Joy Mfg Co Coal drill bit
US2702698A (en) * 1949-09-08 1955-02-22 Colmol Company Bit for rotary coal cutting machines
GB2199520A (en) * 1986-12-29 1988-07-13 Boart Int Ltd Boring bit for coal or soft rock

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