GB205042A - Improvements in screw-cutting taps - Google Patents

Improvements in screw-cutting taps

Info

Publication number
GB205042A
GB205042A GB3077/23A GB307723A GB205042A GB 205042 A GB205042 A GB 205042A GB 3077/23 A GB3077/23 A GB 3077/23A GB 307723 A GB307723 A GB 307723A GB 205042 A GB205042 A GB 205042A
Authority
GB
United Kingdom
Prior art keywords
cutting
edges
taps
generatrix
screw
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
GB3077/23A
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
Publication of GB205042A publication Critical patent/GB205042A/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
    • B23G2210/00—Details of threads produced
    • B23G2210/36—Threads having a square profile

Landscapes

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

Abstract

205,042. Coenen, E. Oct. 6, 1922, [Convention date]. No Patent granted (Sealing fee not paid). Taps.-In screw-cutting taps of the type in which the cutting-edges instead of being arranged parallel to a generatrix are inclined thereto so as to cut in an oblique direction, the cutting-edges are arranged along lines inclined in different directions. The grooves along which the cutting-edges are arranged may be parallel to a generatrix, as in Fig. 3, or inclined thereto as in Fig. 4, the cutting-edges along each groove being inclined alternately to the right and left in each case. The grooves are preferably helical. The Specification as open to inspection under Sect. 91 (3) (a) describes also a tap including roughing and finishing portions, a radially adjustable tool being arranged between them when there is an appreciable difference of diameter. Each groove may provide cutting-edges inclined in both directions as in Fig. 9, the inclination being staggered in adjacent lands, and in this form the cutting-edges are under-cut. This subject-matter does not appear in the Specification as accepted.
GB3077/23A 1922-10-06 1923-02-01 Improvements in screw-cutting taps Expired GB205042A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE205042X 1922-10-06

Publications (1)

Publication Number Publication Date
GB205042A true GB205042A (en) 1924-04-17

Family

ID=3864882

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3077/23A Expired GB205042A (en) 1922-10-06 1923-02-01 Improvements in screw-cutting taps

Country Status (2)

Country Link
FR (1) FR561349A (en)
GB (1) GB205042A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9682435B2 (en) * 2014-08-28 2017-06-20 Kennametal Inc. Thread forming taps

Also Published As

Publication number Publication date
FR561349A (en) 1923-10-19

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