GB533343A - Improvements in and relating to rock drills - Google Patents

Improvements in and relating to rock drills

Info

Publication number
GB533343A
GB533343A GB2903/39D GB290339D GB533343A GB 533343 A GB533343 A GB 533343A GB 2903/39 D GB2903/39 D GB 2903/39D GB 290339 D GB290339 D GB 290339D GB 533343 A GB533343 A GB 533343A
Authority
GB
United Kingdom
Prior art keywords
bit
relating
rock drills
detents
recesses
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
GB2903/39D
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2903/39D priority Critical patent/GB533343A/en
Publication of GB533343A publication Critical patent/GB533343A/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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches

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

533,343. Rock drills. CRAIG, E. Oct. 31, 1939, No. 29037. [Class 124] In a rock drill the bit 3 is formed with a socket 4 to receive the end of a straight-sided shank 1, and has detents 5 adapted to be forced laterally into recesses 2 in the side faces of the shank. The detents may form parts of the sides of the bit which are extended past the recesses 2. The bit may be removed by means of a shoulder 9 or its edge 9<SP>1</SP>. The cutters 8 of the bit decrease in length in the direction of rotation. They each have a cutting angle of about 32 degrees, and the bottom is concaved as at 8<SP>1</SP>.
GB2903/39D 1939-10-31 1939-10-31 Improvements in and relating to rock drills Expired GB533343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2903/39D GB533343A (en) 1939-10-31 1939-10-31 Improvements in and relating to rock drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2903/39D GB533343A (en) 1939-10-31 1939-10-31 Improvements in and relating to rock drills

Publications (1)

Publication Number Publication Date
GB533343A true GB533343A (en) 1941-02-11

Family

ID=9748210

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2903/39D Expired GB533343A (en) 1939-10-31 1939-10-31 Improvements in and relating to rock drills

Country Status (1)

Country Link
GB (1) GB533343A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2776818A (en) * 1953-09-16 1957-01-08 Elzo G Walker Well drill bit
US3118511A (en) * 1960-09-29 1964-01-21 Casimir T Kay Rotary drill bits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2776818A (en) * 1953-09-16 1957-01-08 Elzo G Walker Well drill bit
US3118511A (en) * 1960-09-29 1964-01-21 Casimir T Kay Rotary drill bits

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