GB684988A - Improvements in and relating to drill bits - Google Patents

Improvements in and relating to drill bits

Info

Publication number
GB684988A
GB684988A GB1773450A GB1773450A GB684988A GB 684988 A GB684988 A GB 684988A GB 1773450 A GB1773450 A GB 1773450A GB 1773450 A GB1773450 A GB 1773450A GB 684988 A GB684988 A GB 684988A
Authority
GB
United Kingdom
Prior art keywords
relating
drill bits
westwood
july
prongs
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
GB1773450A
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.)
SMITH AND WESTWOOD Ltd
VICTOR HORACE WESTWOOD
Original Assignee
SMITH AND WESTWOOD Ltd
VICTOR HORACE WESTWOOD
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 SMITH AND WESTWOOD Ltd, VICTOR HORACE WESTWOOD filed Critical SMITH AND WESTWOOD Ltd
Priority to GB1773450A priority Critical patent/GB684988A/en
Publication of GB684988A publication Critical patent/GB684988A/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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
    • 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
    • E21B10/02—Core bits
    • E21B10/04—Core bits with core destroying means

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

684,988. Drills. SMITH & WESTWOOD, Ltd., and WESTWOOD, V. H. July 2, 1951 [July 15, 1950], No. 17734/50. Class 83 (iii). A drill bit comprises three angularly-spaced prongs 1, 2, 3 and an auxiliary, cutter 9 to break up the core left by the prongs.
GB1773450A 1950-07-15 1950-07-15 Improvements in and relating to drill bits Expired GB684988A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1773450A GB684988A (en) 1950-07-15 1950-07-15 Improvements in and relating to drill bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1773450A GB684988A (en) 1950-07-15 1950-07-15 Improvements in and relating to drill bits

Publications (1)

Publication Number Publication Date
GB684988A true GB684988A (en) 1952-12-31

Family

ID=10100299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1773450A Expired GB684988A (en) 1950-07-15 1950-07-15 Improvements in and relating to drill bits

Country Status (1)

Country Link
GB (1) GB684988A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740612A (en) * 1954-02-23 1956-04-03 Phipps Orville Two-arm rotary drill bit
DE3147099A1 (en) * 1980-12-01 1982-07-01 Christensen, Inc., 84115 Salt Lake City, Utah "TURNING WORKING DRILL BIT"
GB2388803A (en) * 2002-01-14 2003-11-26 Tcl Supplies Ltd Drill bit with crown having at least three cutting blades

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740612A (en) * 1954-02-23 1956-04-03 Phipps Orville Two-arm rotary drill bit
DE3147099A1 (en) * 1980-12-01 1982-07-01 Christensen, Inc., 84115 Salt Lake City, Utah "TURNING WORKING DRILL BIT"
GB2388803A (en) * 2002-01-14 2003-11-26 Tcl Supplies Ltd Drill bit with crown having at least three cutting blades
GB2388803B (en) * 2002-01-14 2005-11-02 Tcl Supplies Ltd Drill bit

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