GB606377A - Improvements in or relating to drilling tools for coal mining and like operations - Google Patents

Improvements in or relating to drilling tools for coal mining and like operations

Info

Publication number
GB606377A
GB606377A GB120646A GB120646A GB606377A GB 606377 A GB606377 A GB 606377A GB 120646 A GB120646 A GB 120646A GB 120646 A GB120646 A GB 120646A GB 606377 A GB606377 A GB 606377A
Authority
GB
United Kingdom
Prior art keywords
relating
operations
coal mining
drilling tools
receive
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
GB120646A
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.)
Hall and Pickles Ltd
Original Assignee
Hall and Pickles 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 Hall and Pickles Ltd filed Critical Hall and Pickles Ltd
Priority to GB120646A priority Critical patent/GB606377A/en
Publication of GB606377A publication Critical patent/GB606377A/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

606,377. Drills and cutters. HALL & PICKLES, Ltd., and RUSSELL, R. Jan. 14, 1946, No. 1206. [Class 83 (iii)] A. tool-holder a has circumferentially radiused ends b and is grooved transversely on the advancing face to receive a drill bit d and the raised portions are formed with apertures and slots to receive cranked insert bits g of rectangular section with cutting-edges on the advancing sides. The bits are locked by pins j.
GB120646A 1946-01-14 1946-01-14 Improvements in or relating to drilling tools for coal mining and like operations Expired GB606377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB120646A GB606377A (en) 1946-01-14 1946-01-14 Improvements in or relating to drilling tools for coal mining and like operations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB120646A GB606377A (en) 1946-01-14 1946-01-14 Improvements in or relating to drilling tools for coal mining and like operations

Publications (1)

Publication Number Publication Date
GB606377A true GB606377A (en) 1948-08-12

Family

ID=9717997

Family Applications (1)

Application Number Title Priority Date Filing Date
GB120646A Expired GB606377A (en) 1946-01-14 1946-01-14 Improvements in or relating to drilling tools for coal mining and like operations

Country Status (1)

Country Link
GB (1) GB606377A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695158A (en) * 1949-11-30 1954-11-23 Herbert J Hawthorne Fracture type rock cutter
US2877985A (en) * 1956-03-29 1959-03-17 Gerald A M Petersen Hard tip pilot bit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2695158A (en) * 1949-11-30 1954-11-23 Herbert J Hawthorne Fracture type rock cutter
US2877985A (en) * 1956-03-29 1959-03-17 Gerald A M Petersen Hard tip pilot bit

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