Cutting – Tool or tool with support – Cutting couple type
Patent
1984-08-22
1986-08-26
Yost, Frank T.
Cutting
Tool or tool with support
Cutting couple type
83689, 83691, B21D 2814
Patent
active
046075577
ABSTRACT:
A punch which includes a notching tool and a separating which are adapted to punch at least one notch and a separating gap in each effective working stroke of the punch. A separating tool is formed by at least two independently disposed separating punches which are spaced from each other by a distance which is equal to or greater than a width of a web formed between two punched notches. Likewise, the notching tool may be in the form of two independent spaced notching punches.
REFERENCES:
patent: 407242 (1889-07-01), Quinn
patent: 806362 (1905-12-01), Porter et al.
patent: 843875 (1907-02-01), Dunham
patent: 1767492 (1930-06-01), Valentine
patent: 1788023 (1931-01-01), Hochreiner
patent: 3273438 (1966-09-01), Brook
patent: 3500710 (1970-03-01), Taber
patent: 3524370 (1970-08-01), Thompson
Bergmann Ewald
Dommer Hans-Martin
Kurz Otto
L. Schuler GmbH
Yost Frank T.
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