GB133494A - Improvements in and relating to Drilling Tools. - Google Patents

Improvements in and relating to Drilling Tools.

Info

Publication number
GB133494A
GB133494A GB17885/18A GB1788518A GB133494A GB 133494 A GB133494 A GB 133494A GB 17885/18 A GB17885/18 A GB 17885/18A GB 1788518 A GB1788518 A GB 1788518A GB 133494 A GB133494 A GB 133494A
Authority
GB
United Kingdom
Prior art keywords
steps
drilling
tool
secured
different
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
GB17885/18A
Inventor
Thomas Alexander Forsyth
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 GB17885/18A priority Critical patent/GB133494A/en
Publication of GB133494A publication Critical patent/GB133494A/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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/48—Chip breakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/50—Drilling tools comprising cutting inserts

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

133,494. Forsyth, T. A. Nov. 1, 1918. Drills, cutters, and cutter bars.-In a drilling or boring tool, particularly for drilling shafting, of the type having steps on each diagonal or angular face with cutting-edges a extending outwards from the foot of the steps, the steps are made at different levels and of different radii on opposite faces, preferably alternately. The steps are circular in form struck either from the axis of the tool as centre or from different centres inside or outside the central vertical line. Grooves, flutes, or corrugations bare preferably formed at different levels on opposite faces to break cuttings and minimize friction. The tool is secured bv a set-screw B' in a slotted holder B secured at D to a boring-bar and provided with longitudinal ribs C to take up sag where long lengths of drilling are required.
GB17885/18A 1918-11-01 1918-11-01 Improvements in and relating to Drilling Tools. Expired GB133494A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB17885/18A GB133494A (en) 1918-11-01 1918-11-01 Improvements in and relating to Drilling Tools.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17885/18A GB133494A (en) 1918-11-01 1918-11-01 Improvements in and relating to Drilling Tools.

Publications (1)

Publication Number Publication Date
GB133494A true GB133494A (en) 1919-10-16

Family

ID=32672344

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17885/18A Expired GB133494A (en) 1918-11-01 1918-11-01 Improvements in and relating to Drilling Tools.

Country Status (1)

Country Link
GB (1) GB133494A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019218421A1 (en) * 2019-11-27 2021-05-27 Robert Bosch Gmbh Wood drill

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019218421A1 (en) * 2019-11-27 2021-05-27 Robert Bosch Gmbh Wood drill

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