Tack button

Details Tack button Tack button

1986-10-06

1987-10-20

Sakran, Victor N.

Buckles, buttons, clasps, etc.

Button with fastener

Deflecting prong or rivet

24 95, 24113R, A44B 142

Patent

active

047004355

ABSTRACT:
A tack button utilizes a pivot tack that has a long taper on its shank which prevents buckling and a subsequent loose connection of the assembled button parts, particularly the assembly of the back member of the button with the fabric to which the button is being attached. The long tapered shank curls as the assembly process is carried out so that a curled structure is within the button shell and is positioned to clinch the back member to the fabric.

REFERENCES:
patent: 423370 (1890-03-01), Bristol
patent: 439903 (1890-11-01), Shipley
patent: 1378073 (1921-05-01), White
patent: 1434491 (1922-11-01), Hubbell
patent: 1646053 (1927-10-01), Clark
patent: 1661616 (1928-03-01), Merzinger
patent: 1718843 (1929-06-01), White et al.
patent: 2018104 (1935-10-01), White
patent: 3358547 (1967-12-01), Jensen
patent: 3440693 (1969-04-01), Reynolds
patent: 3500506 (1970-03-01), Mitchell
Tool Engineers Hand Book--2nd edition--1959--two pages 54-7.
Metals Handbook--vol. 4--8th edition--1969--p. 466, (two pages).
Chipless Machining--by Charles H. Wick--1960--pp. 56-57 (two pages).
Upsetting--by National Machinery Co., p. 6--five pages.

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