Double-ended heading punch

Details Double-ended heading punch Double-ended heading punch

1977-07-05

1978-06-13

Gilden, Leon

Metal deforming

Tool and/or tool holder

Having unitary tool-face

83686, B21D 3100

Patent

active

040941850

ABSTRACT:
A punch for forming a fastener head has a shaped projection at each end and is releasably secured in a holder with one end abutting against a ledge on the inside of the holder and the other end extending beyond the holder. The shaped projections are formed simultaneously by a pair of hobs in one press stroke.

REFERENCES:
patent: 831945 (1906-07-01), Gonyea
patent: 1449136 (1923-03-01), Yates
patent: 1964030 (1934-06-01), Brush
patent: 2479756 (1949-08-01), Mays

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