GB104797A - Improvements in or relating to Twist Drills. - Google Patents

Improvements in or relating to Twist Drills.

Info

Publication number
GB104797A
GB104797A GB807616A GB807616A GB104797A GB 104797 A GB104797 A GB 104797A GB 807616 A GB807616 A GB 807616A GB 807616 A GB807616 A GB 807616A GB 104797 A GB104797 A GB 104797A
Authority
GB
United Kingdom
Prior art keywords
lip
lips
cutting
relating
twist 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
GB807616A
Inventor
Felix Alexander Joseph
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 GB807616A priority Critical patent/GB104797A/en
Publication of GB104797A publication Critical patent/GB104797A/en
Priority claimed from US330869A external-priority patent/US1407546A/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
    • B23B2251/24—Overall form of drilling tools
    • B23B2251/241—Cross sections of the diameter of the drill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/40—Flutes, i.e. chip conveying grooves
    • B23B2251/406—Flutes, i.e. chip conveying grooves of special form not otherwise provided for
    • 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
    • B23B2260/00—Details of constructional elements
    • B23B2260/072—Grooves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

104,797. Joseph, F. A. June 7, 1916. Drills.-Twist drills are provided with dissimilar flutes so that, on grinding in the usual way, lips which have non-cutting portions are formed, the cutting- portions on one lip alternating with those on the other or others. In the example shown in Fig. 1, the lip cd as shown at c<1>d<1> superimposed on the lip ab, the former having a cutting-portion c<1>x, and the latter d<1>x. The points bd<1> may coincide, and the superimposed lips may cross at several points. Parts of one or both lips may be made straight and truly radial.
GB807616A 1916-06-07 1916-06-07 Improvements in or relating to Twist Drills. Expired GB104797A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB807616A GB104797A (en) 1916-06-07 1916-06-07 Improvements in or relating to Twist Drills.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB807616A GB104797A (en) 1916-06-07 1916-06-07 Improvements in or relating to Twist Drills.
US330869A US1407546A (en) 1919-10-15 1919-10-15 Twist drill

Publications (1)

Publication Number Publication Date
GB104797A true GB104797A (en) 1917-03-22

Family

ID=32299678

Family Applications (1)

Application Number Title Priority Date Filing Date
GB807616A Expired GB104797A (en) 1916-06-07 1916-06-07 Improvements in or relating to Twist Drills.

Country Status (1)

Country Link
GB (1) GB104797A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3730378A1 (en) * 1987-09-10 1989-03-23 Micro Crystal Ag CUTTING TOOL, ESPECIALLY DRILLING AND / OR MILLING

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3730378A1 (en) * 1987-09-10 1989-03-23 Micro Crystal Ag CUTTING TOOL, ESPECIALLY DRILLING AND / OR MILLING

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