GB897516A - Drill bits for earth formations - Google Patents

Drill bits for earth formations

Info

Publication number
GB897516A
GB897516A GB40665/59A GB4066559A GB897516A GB 897516 A GB897516 A GB 897516A GB 40665/59 A GB40665/59 A GB 40665/59A GB 4066559 A GB4066559 A GB 4066559A GB 897516 A GB897516 A GB 897516A
Authority
GB
United Kingdom
Prior art keywords
shanks
drill bits
tapered
earth formations
williams
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
GB40665/59A
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.)
JAMES TRAHAN WILLIAMS
Original Assignee
JAMES TRAHAN WILLIAMS
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 JAMES TRAHAN WILLIAMS filed Critical JAMES TRAHAN WILLIAMS
Publication of GB897516A publication Critical patent/GB897516A/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
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • E21B10/627—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements

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

897,516. Boring earth &c. WILLIAMS, J. T. Nov. 30, 1959 [June 4, 1959], No. 40665/59. Class 85. The detachable blades 4 of a rotary drill bit each have a tapered shank 10 which is arcuate in cross-section to mate with a tapered surface on the bit body 3, the said surface having longitudinal grooves 1, one for each blade, and a circumferential groove 2, into which fit ribs 6, 8 on the shanks 10. The shanks are retained by a correspondingly internally tapered sliding collar 5 forced down by a sub screwed on the threads 11. Specification 774,075 is referred to.
GB40665/59A 1959-06-04 1959-11-30 Drill bits for earth formations Expired GB897516A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US818029A US3040825A (en) 1959-06-04 1959-06-04 Drill bits

Publications (1)

Publication Number Publication Date
GB897516A true GB897516A (en) 1962-05-30

Family

ID=25224464

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40665/59A Expired GB897516A (en) 1959-06-04 1959-11-30 Drill bits for earth formations

Country Status (2)

Country Link
US (1) US3040825A (en)
GB (1) GB897516A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3139946A (en) * 1962-07-05 1964-07-07 Varel Mfg Company Inc Replaceable drill bit structures
US3182736A (en) * 1962-11-28 1965-05-11 Thomas H Arnold Drilling bits
AU539088B2 (en) * 1979-01-12 1984-09-13 Kennametal Inc. Detachable roller bit rotary cone cutter
CN106994720A (en) * 2017-04-17 2017-08-01 南通博泰美术图案设计有限公司 Drill bit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2656153A (en) * 1949-09-12 1953-10-20 Thomas A White Rotary drilling bit
US2831657A (en) * 1949-11-30 1958-04-22 Herbert J Hawthorne Removable blade drag bits
US2783973A (en) * 1951-02-20 1957-03-05 Herbert J Hawthorne Drill bit

Also Published As

Publication number Publication date
US3040825A (en) 1962-06-26

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