GB364750A - Improvements in, and relating to, twist drills and like tools for drilling or boring holes in metal and other materials - Google Patents

Improvements in, and relating to, twist drills and like tools for drilling or boring holes in metal and other materials

Info

Publication number
GB364750A
GB364750A GB3393230A GB3393230A GB364750A GB 364750 A GB364750 A GB 364750A GB 3393230 A GB3393230 A GB 3393230A GB 3393230 A GB3393230 A GB 3393230A GB 364750 A GB364750 A GB 364750A
Authority
GB
United Kingdom
Prior art keywords
cutting edges
point
drilling
tools
relating
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
GB3393230A
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 GB3393230A priority Critical patent/GB364750A/en
Publication of GB364750A publication Critical patent/GB364750A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/02—Twist drills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/18—Configuration of the drill point
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)

Abstract

364,750. Drills. PAIGE, W. R., Drill Square, Langsett Road, Sheffield. Nov. 11, 1930, No. 33932. [Class 83 (iii).] A twist drill or like fluted tool is provided adjacent the extreme point a with grooves g which give relief to the point and isolate it from the initial cutting edges b, for the purpose of allowing cuttings produced by the point to escape readily. The grooves extend helically from the initial cutting edges to the rear of the usual point-relief or clearance and may increase in width and depth from the cutting edges b to the non- cutting edges f.
GB3393230A 1930-11-11 1930-11-11 Improvements in, and relating to, twist drills and like tools for drilling or boring holes in metal and other materials Expired GB364750A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3393230A GB364750A (en) 1930-11-11 1930-11-11 Improvements in, and relating to, twist drills and like tools for drilling or boring holes in metal and other materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3393230A GB364750A (en) 1930-11-11 1930-11-11 Improvements in, and relating to, twist drills and like tools for drilling or boring holes in metal and other materials

Publications (1)

Publication Number Publication Date
GB364750A true GB364750A (en) 1932-01-14

Family

ID=10359255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3393230A Expired GB364750A (en) 1930-11-11 1930-11-11 Improvements in, and relating to, twist drills and like tools for drilling or boring holes in metal and other materials

Country Status (1)

Country Link
GB (1) GB364750A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2600286A (en) * 1947-09-08 1952-06-10 Bell Machine Company Drill bit
US4565473A (en) * 1980-08-29 1986-01-21 Toshiaki Hosoi Drill
FR2583667A1 (en) * 1985-06-19 1986-12-26 Girouard Marc Drill bit for materials which are difficult to machine
US20160082525A1 (en) * 2014-09-24 2016-03-24 Sainty International, LLC Multi-edge drill bit
US20170274461A1 (en) * 2014-09-26 2017-09-28 Mitsubishi Materials Corporation Drill and drill head

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2600286A (en) * 1947-09-08 1952-06-10 Bell Machine Company Drill bit
US4565473A (en) * 1980-08-29 1986-01-21 Toshiaki Hosoi Drill
FR2583667A1 (en) * 1985-06-19 1986-12-26 Girouard Marc Drill bit for materials which are difficult to machine
US20160082525A1 (en) * 2014-09-24 2016-03-24 Sainty International, LLC Multi-edge drill bit
US20170274461A1 (en) * 2014-09-26 2017-09-28 Mitsubishi Materials Corporation Drill and drill head

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