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GB528593A - Improvements in or relating to rotary bits for rock and like drilling - Google Patents

Improvements in or relating to rotary bits for rock and like drilling

Info

Publication number
GB528593A
GB528593A GB1391939A GB1391939A GB528593A GB 528593 A GB528593 A GB 528593A GB 1391939 A GB1391939 A GB 1391939A GB 1391939 A GB1391939 A GB 1391939A GB 528593 A GB528593 A GB 528593A
Authority
GB
United Kingdom
Prior art keywords
wings
bit
core
face
rock
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
GB1391939A
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.)
Jessop William & Sons Ltd
Original Assignee
Jessop William & Sons 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 Jessop William & Sons Ltd filed Critical Jessop William & Sons Ltd
Priority to GB1391939A priority Critical patent/GB528593A/en
Publication of GB528593A publication Critical patent/GB528593A/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

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

528,593. Drills. JESSOP & SONS, Ltd., W., and LAMBERT, J. G. May 10, 1939, Nos. 13919 and 25067. [Class 83 (iii)] A rotary drill bit for rock, coal &c. of the kind having two or more blades separated by a U-shaped gap, has a face or faces in the gaps remote from the cutting edges and inclined to the axis of the bit so as to engage the core or cores and break them into pieces by a transverse or side-ways pressure. In one form the bit has wings 3 tipped at 8 with tungsten carbide &c. and the central part has an inclined face 5 for breaking away the core 6 left by the wings. The face 5 is preferably inclined at 45 degrees to the axis of the bit and instead of being formed on the body it may be formed on a separate piece located by flats &c. on the body and having a stem entering a hole therein. In a modified construction, the body 1, Figs. 8 and 11, has inner wings 3 and outer wings 9, the central core 6 being broken periodically by the inclined surface 5 and the annular core 12 being broken by a member 11 on the body 1. The outer wings 9 and member 11 may be formed integral with the body 1 or may constitute a separate unit on a base 13 having a central aperture to receive the stem 2 of the body and a transverse slot 14 to engage a rib on the body. The member 11 may be formed as a stud mounted in a hole in the base 13.
GB1391939A 1939-05-10 1939-05-10 Improvements in or relating to rotary bits for rock and like drilling Expired GB528593A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1391939A GB528593A (en) 1939-05-10 1939-05-10 Improvements in or relating to rotary bits for rock and like drilling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1391939A GB528593A (en) 1939-05-10 1939-05-10 Improvements in or relating to rotary bits for rock and like drilling

Publications (1)

Publication Number Publication Date
GB528593A true GB528593A (en) 1940-11-01

Family

ID=10031772

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1391939A Expired GB528593A (en) 1939-05-10 1939-05-10 Improvements in or relating to rotary bits for rock and like drilling

Country Status (1)

Country Link
GB (1) GB528593A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461305A (en) * 1943-09-22 1949-02-08 Victor Products Ltd Rotary bit for drilling coal and rock
US2578593A (en) * 1946-10-29 1951-12-11 Phipps Orville Auger-type drill bit
US2614814A (en) * 1948-12-23 1952-10-21 Joy Mfg Co Coal drill bit
US2631823A (en) * 1947-10-21 1953-03-17 Fred E Dannheim Pipe driving point
US2648525A (en) * 1948-06-09 1953-08-11 Phipps Orville Core-breaking drill bit for doubleflute augers
US2650071A (en) * 1950-03-10 1953-08-25 Central Mine Equipment Company Mining drill
US2702698A (en) * 1949-09-08 1955-02-22 Colmol Company Bit for rotary coal cutting machines
DE2751848A1 (en) * 1977-11-19 1979-05-23 Ver Edelstahlwerke Ag Rock drill stepped boring head - has cutting rings fitted onto stem, locked together by teeth on contact faces

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461305A (en) * 1943-09-22 1949-02-08 Victor Products Ltd Rotary bit for drilling coal and rock
US2578593A (en) * 1946-10-29 1951-12-11 Phipps Orville Auger-type drill bit
US2631823A (en) * 1947-10-21 1953-03-17 Fred E Dannheim Pipe driving point
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
US2650071A (en) * 1950-03-10 1953-08-25 Central Mine Equipment Company Mining drill
DE2751848A1 (en) * 1977-11-19 1979-05-23 Ver Edelstahlwerke Ag Rock drill stepped boring head - has cutting rings fitted onto stem, locked together by teeth on contact faces

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