GB1141312A - Method of making self-tapping screws - Google Patents

Method of making self-tapping screws

Info

Publication number
GB1141312A
GB1141312A GB2562866A GB2562866A GB1141312A GB 1141312 A GB1141312 A GB 1141312A GB 2562866 A GB2562866 A GB 2562866A GB 2562866 A GB2562866 A GB 2562866A GB 1141312 A GB1141312 A GB 1141312A
Authority
GB
United Kingdom
Prior art keywords
tapping screws
making self
self
june
cutting
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
GB2562866A
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 GB1141312A publication Critical patent/GB1141312A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/027—Rolling of self-tapping screws

Abstract

1,141,312. Making self-tapping screws. C. F. JENSEN. 8 June, 1966 [8 June, 1965], No. 25628/66. Headings B3A and B3N. Self-tapping screws are produced by cutting or rolling a screwthread with a flat root, on to the surface of a rod 1, Fig. 11, having grooves 2. The thread may be backed off at 18, and the cutting edges may have a positive rake angle x. The screw may have a head (11), Fig. 3 (not shown), a plain or screwed bore, Figs. 5, 6 (not shown), a pilot end (16), and a hexagonal recess (15), Fig. 9 (not shown).
GB2562866A 1965-06-08 1966-06-08 Method of making self-tapping screws Expired GB1141312A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK285765A DK112829B (en) 1965-06-08 1965-06-08 Self-tapping screw.

Publications (1)

Publication Number Publication Date
GB1141312A true GB1141312A (en) 1969-01-29

Family

ID=8116482

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2562866A Expired GB1141312A (en) 1965-06-08 1966-06-08 Method of making self-tapping screws

Country Status (4)

Country Link
DE (1) DE1974975U (en)
DK (1) DK112829B (en)
GB (1) GB1141312A (en)
SE (1) SE346360B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2199106A (en) * 1986-12-10 1988-06-29 Harry Francis Cole Inserts providing screw-threaded holes in objects
CN105026069A (en) * 2013-02-26 2015-11-04 喜利得股份公司 Method for producing screws and concrete screw

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937119A (en) * 1974-12-23 1976-02-10 Illinois Tool Works, Inc. Masonry anchor device
DE102005022215A1 (en) * 2005-05-13 2006-11-16 Ejot Gmbh & Co. Kg Thread forming screw has recesses on thread crests with volume of individual recesses reducing from start of thread to end so that reduction takes place continuously at least over part of length of thread
DE102013203150A1 (en) * 2013-02-26 2014-08-28 Hilti Aktiengesellschaft Method for producing a concrete screw

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2199106A (en) * 1986-12-10 1988-06-29 Harry Francis Cole Inserts providing screw-threaded holes in objects
GB2199106B (en) * 1986-12-10 1990-10-10 Harry Francis Cole An insert for providing a screw-threaded hole in an object
CN105026069A (en) * 2013-02-26 2015-11-04 喜利得股份公司 Method for producing screws and concrete screw

Also Published As

Publication number Publication date
DK112829B (en) 1969-01-20
DE1974975U (en) 1967-12-14
SE346360B (en) 1972-07-03

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