GB981489A - Improvements in or relating to rock bits - Google Patents

Improvements in or relating to rock bits

Info

Publication number
GB981489A
GB981489A GB3961862A GB3961862A GB981489A GB 981489 A GB981489 A GB 981489A GB 3961862 A GB3961862 A GB 3961862A GB 3961862 A GB3961862 A GB 3961862A GB 981489 A GB981489 A GB 981489A
Authority
GB
United Kingdom
Prior art keywords
relating
shape
radially disposed
cutting edge
pieces
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
GB3961862A
Inventor
John Raymond Healey
Francis Eric Hoole
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.)
Tungsten Carbide Developments Ltd
Original Assignee
Tungsten Carbide Developments 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 Tungsten Carbide Developments Ltd filed Critical Tungsten Carbide Developments Ltd
Priority to GB3961862A priority Critical patent/GB981489A/en
Publication of GB981489A publication Critical patent/GB981489A/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
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/58—Chisel-type inserts

Abstract

981,489. Tool bits. TUNGSTEN CARBIDE DEVELOPMENTS Ltd. Jan. 17, 1964 [Oct. 19, 1962], No. 39618/62. Heading B3C. [Also in Division B4] A rotary-percussive rock bit comprises a radially disposed cutting edge 23 and two non- radially disposed cutting edges 24. The radial cutting edge 23 extends to a short distance beyond the centre 13 and is formed from two pieces 18, 20, a notch 25 being formed where the two pieces abut. The two cutting edges 24 may be arranged in a T-shape as shown or in a Y-shape. Ports 26 are provided for a flushing liquid.
GB3961862A 1962-10-19 1962-10-19 Improvements in or relating to rock bits Expired GB981489A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3961862A GB981489A (en) 1962-10-19 1962-10-19 Improvements in or relating to rock bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3961862A GB981489A (en) 1962-10-19 1962-10-19 Improvements in or relating to rock bits

Publications (1)

Publication Number Publication Date
GB981489A true GB981489A (en) 1965-01-27

Family

ID=10410540

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3961862A Expired GB981489A (en) 1962-10-19 1962-10-19 Improvements in or relating to rock bits

Country Status (1)

Country Link
GB (1) GB981489A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996007011A1 (en) * 1994-08-30 1996-03-07 Reburg Patentverwertungsgesellschaft Mbh Drilling head with cutters in arrow-shaped array
WO2002092957A3 (en) * 2001-05-17 2003-04-17 Atlas Copco Mai Gmbh Drill bit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996007011A1 (en) * 1994-08-30 1996-03-07 Reburg Patentverwertungsgesellschaft Mbh Drilling head with cutters in arrow-shaped array
WO2002092957A3 (en) * 2001-05-17 2003-04-17 Atlas Copco Mai Gmbh Drill bit
EP1564365A2 (en) 2001-05-17 2005-08-17 Atlas Copco Mai GmbH Drill bit
EP1564365A3 (en) * 2001-05-17 2007-05-02 Atlas Copco Mai GmbH Drill bit

Similar Documents

Publication Publication Date Title
GB1403042A (en) Cutters
GB948107A (en) Spade drill blade
GB1408794A (en) Earth and rock boring tool
GB1432546A (en) Twist drills
GB1233953A (en)
GB1228548A (en)
GB1419624A (en) Drills for use in drilling and the like operations
GB1105058A (en) Improvements in or relating to rotatable drilling tools
GB1062125A (en) Improvements in or relating to rotary boring tools operating with jets of fluid
GB981489A (en) Improvements in or relating to rock bits
GB1008029A (en) Drill bits
GB1316790A (en) Drilling tools
GB1146403A (en) Improvements in drill bits
GB1069264A (en) Improvements in or relating to percussive drill bits
GB1466036A (en) Rotary earth-cutting tools
GB1378342A (en) Tip for drill bit
GB1010885A (en) Auger tooth with side edge blade
GB961449A (en) Improvements relating to drills
GB1014433A (en) Apparatus for earth boring
FR1224876A (en) Grinding machine for sharpening transverse cutting edges of drills, bits, reamers, milling cutters and the like
GB856276A (en) Improvements relating to multi-toothed cutting tools of sheet metal
GB947835A (en) Improvements in or relating to drill bits
GB1344053A (en) Milling cutters and milling cutter blanks
GB1188305A (en) Improvements in Rotary Cutter Tools for Tunnelling and like Machines
GB1082458A (en) Cutting tool for a drill