Method for punching holes in edge binding and the product produc

Details Method for punching holes in edge binding and the product produc Method for punching holes in edge binding and the product produc

1985-03-20

1987-02-17

Weidenfeld, Gil

Metal working

Method of mechanical manufacture

Assembling or joining

295642, 52 3, 135115, 160380, 242 752, 408 1R, B21D 2800

Patent

active

046428682

ABSTRACT:
Edge finished and edge binding for tarpaulins and the method and apparatus for finishing edges of tarpaulins in which the tarpaulin or separate edge binding material is made from a heavy duty fabric of the type woven of high density yarn and in which, at desired intervals along a center line, a series of holes is provided. The apparatus includes a rotating punch die and a slack bar for slackening the material to be punch/cut in advance of the punching/cutting operation. The mechanisms for advancing punch/cutting, slackening and taking up the processed material are timed.

REFERENCES:
patent: 1451610 (1923-04-01), Gestas
patent: 3540674 (1970-11-01), Okamura
patent: 3694099 (1972-09-01), Nicholas
patent: 3904145 (1975-09-01), Steinberger et al.
patent: 3987592 (1976-10-01), Herminghaus et al.
patent: 4293100 (1981-10-01), Sharlow

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