GB191228385A - Improvements in Drills for Rock-drilling. - Google Patents

Improvements in Drills for Rock-drilling.

Info

Publication number
GB191228385A
GB191228385A GB191228385DA GB191228385A GB 191228385 A GB191228385 A GB 191228385A GB 191228385D A GB191228385D A GB 191228385DA GB 191228385 A GB191228385 A GB 191228385A
Authority
GB
United Kingdom
Prior art keywords
holder
helical
bit
tapered
drills
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
Inventor
Thomas Glendinning
Harold William Clayden
Ernest Stephenson Stephens
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
Application granted granted Critical
Publication of GB191228385A publication Critical patent/GB191228385A/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
    • 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
    • E21B17/06—Releasing-joints, e.g. safety joints

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

28,385. Glendinning, T., Clayden, H. W., and Stephens, E. S. Dec. 9. Percussive drills.-In a drill with a detachable bit, the holder 1 has an interior spiral, helical, or like surface 9 adapted to be engaged by a lateral projection 5 on the tapered tang 4 of the bit 2 to fix the bit. The lateral projection 5 is passed through a groove 10. Several lateral projections 5 and helical or like surfaces 9 may be provided. The helical surface 9 and groove 10 may be formed in a bush which is screwed into the holder 1, or which has a tapered rear end around which the holder 1 is compressed, as by pressure-welding. According to the Provisional Specification, the tang need not be tapered.
GB191228385D 1912-12-09 1912-12-09 Improvements in Drills for Rock-drilling. Expired GB191228385A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191228385T 1912-12-09

Publications (1)

Publication Number Publication Date
GB191228385A true GB191228385A (en) 1913-12-09

Family

ID=32369819

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191228385D Expired GB191228385A (en) 1912-12-09 1912-12-09 Improvements in Drills for Rock-drilling.

Country Status (1)

Country Link
GB (1) GB191228385A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6276879B1 (en) * 1998-08-13 2001-08-21 Iscar Ltd. Cutting head for mounting on a tool holder in a self-clamping manner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6276879B1 (en) * 1998-08-13 2001-08-21 Iscar Ltd. Cutting head for mounting on a tool holder in a self-clamping manner

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