GB129197A - An Improved Screw-cutting Tap. - Google Patents

An Improved Screw-cutting Tap.

Info

Publication number
GB129197A
GB129197A GB1887018A GB1887018A GB129197A GB 129197 A GB129197 A GB 129197A GB 1887018 A GB1887018 A GB 1887018A GB 1887018 A GB1887018 A GB 1887018A GB 129197 A GB129197 A GB 129197A
Authority
GB
United Kingdom
Prior art keywords
flutes
cutting tap
improved screw
axis
tap
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
GB1887018A
Inventor
John Mcfarlane
Duncan Clelland
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 GB1887018A priority Critical patent/GB129197A/en
Publication of GB129197A publication Critical patent/GB129197A/en
Priority to FR504848D priority patent/FR504848A/en
Priority to GB380122A priority patent/GB187535A/en
Priority to FR26067D priority patent/FR26067E/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G5/00—Thread-cutting tools; Die-heads
    • B23G5/02—Thread-cutting tools; Die-heads without means for adjustment
    • B23G5/06—Taps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G2200/00—Details of threading tools
    • B23G2200/48—Spiral grooves, i.e. spiral flutes

Landscapes

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

Abstract

129,197. MeFarlane, J., and Clelland, D. Nov. 18, 1918. Taps are provided with reverse-hand spiral flutes 3 shaped so as to produce spiral cuttings and to feed them forward through the hole being tapped. The flutes are cut in a mining-machine by a cutter set to rotate in a plane inclined to the axis of the work piece and to one side of the axis so that the peripheral edge of the cutter cuts the cutting edge of the tap. The flutes may be tapered in depth axially.
GB1887018A 1918-11-18 1918-11-18 An Improved Screw-cutting Tap. Expired GB129197A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1887018A GB129197A (en) 1918-11-18 1918-11-18 An Improved Screw-cutting Tap.
FR504848D FR504848A (en) 1918-11-18 1919-10-14 Advanced tap
GB380122A GB187535A (en) 1918-11-18 1922-02-09 Improvements in screw-cutting taps
FR26067D FR26067E (en) 1918-11-18 1922-03-09 Advanced tap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1887018A GB129197A (en) 1918-11-18 1918-11-18 An Improved Screw-cutting Tap.

Publications (1)

Publication Number Publication Date
GB129197A true GB129197A (en) 1919-07-10

Family

ID=32348148

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1887018A Expired GB129197A (en) 1918-11-18 1918-11-18 An Improved Screw-cutting Tap.
GB380122A Expired GB187535A (en) 1918-11-18 1922-02-09 Improvements in screw-cutting taps

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB380122A Expired GB187535A (en) 1918-11-18 1922-02-09 Improvements in screw-cutting taps

Country Status (2)

Country Link
FR (2) FR504848A (en)
GB (2) GB129197A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6672332B2 (en) * 2015-12-02 2020-03-25 オーエスジー株式会社 Spiral Tap with Taper Thread for Pipe

Also Published As

Publication number Publication date
FR504848A (en) 1920-07-17
GB187535A (en) 1922-10-26
FR26067E (en) 1923-07-30

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