GB237844A - Improvements in or relating to screw-cutting taps - Google Patents

Improvements in or relating to screw-cutting taps

Info

Publication number
GB237844A
GB237844A GB1106525A GB1106525A GB237844A GB 237844 A GB237844 A GB 237844A GB 1106525 A GB1106525 A GB 1106525A GB 1106525 A GB1106525 A GB 1106525A GB 237844 A GB237844 A GB 237844A
Authority
GB
United Kingdom
Prior art keywords
cutting
teeth
screw
tooth
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
GB1106525A
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 GB1106525A priority Critical patent/GB237844A/en
Publication of GB237844A publication Critical patent/GB237844A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Pumps (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Gear Processing (AREA)

Abstract

237,844. Elstone, S. W. April 28. 1925. Taps.-In a screw-cutting tap, more particularly for cutting square threads, each tooth has a lateral cutting edge 9 and a transverse cutting edge 11 at right angles thereto, these edges being oppositely in the succeeding teeth of adjacent bands, and the non-cutting flanks 12 of the teeth. being bevelled. The advancing flank of each tooth is backed off at an angle of 2‹, Fig. 4, and the outer surfaces 10, Fig. 2, are curved inwards from the cutting faces 8 so as to form curves continuous with the plates 7. The tap has a tapered entering portion with teeth of gradually increasing height and a parallel finishing portion with teeth of full height.
GB1106525A 1925-04-28 1925-04-28 Improvements in or relating to screw-cutting taps Expired GB237844A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1106525A GB237844A (en) 1925-04-28 1925-04-28 Improvements in or relating to screw-cutting taps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1106525A GB237844A (en) 1925-04-28 1925-04-28 Improvements in or relating to screw-cutting taps

Publications (1)

Publication Number Publication Date
GB237844A true GB237844A (en) 1925-08-06

Family

ID=9979344

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1106525A Expired GB237844A (en) 1925-04-28 1925-04-28 Improvements in or relating to screw-cutting taps

Country Status (1)

Country Link
GB (1) GB237844A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114769750A (en) * 2022-05-27 2022-07-22 天津鸿生科技有限公司 Spiral fluted tap for processing small-diameter large-pitch blind hole and using method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114769750A (en) * 2022-05-27 2022-07-22 天津鸿生科技有限公司 Spiral fluted tap for processing small-diameter large-pitch blind hole and using method

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