GB793250A - Improvements in and relating to percussive drill bits - Google Patents

Improvements in and relating to percussive drill bits

Info

Publication number
GB793250A
GB793250A GB3699854A GB3699854A GB793250A GB 793250 A GB793250 A GB 793250A GB 3699854 A GB3699854 A GB 3699854A GB 3699854 A GB3699854 A GB 3699854A GB 793250 A GB793250 A GB 793250A
Authority
GB
United Kingdom
Prior art keywords
projections
relating
drill bits
percussive drill
percussive
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
GB3699854A
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 GB3699854A priority Critical patent/GB793250A/en
Publication of GB793250A publication Critical patent/GB793250A/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
    • E21B10/36—Percussion drill 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)
  • Drilling Tools (AREA)

Abstract

793,250. Percussive drills. GRIFFITHS, E., and ROGERS, J. March 21, 1956 [Dec. 22, 1954], No. 36998/54. Class 124. A percussive drill bit is provided adjacent the rear of its cutting face but spaced therefrom with one or more integrally formed, fin-like projections merging smoothly into the body. As shown, a hollow drill bit 1 has cutting edges 2 and at least two projections 3 formed on the body. The projections may extend radially to be in line with or beyond the outer periphery of the front face.
GB3699854A 1954-12-22 1954-12-22 Improvements in and relating to percussive drill bits Expired GB793250A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3699854A GB793250A (en) 1954-12-22 1954-12-22 Improvements in and relating to percussive drill bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3699854A GB793250A (en) 1954-12-22 1954-12-22 Improvements in and relating to percussive drill bits

Publications (1)

Publication Number Publication Date
GB793250A true GB793250A (en) 1958-04-16

Family

ID=10392887

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3699854A Expired GB793250A (en) 1954-12-22 1954-12-22 Improvements in and relating to percussive drill bits

Country Status (1)

Country Link
GB (1) GB793250A (en)

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