Punch retainer

B - Operations – Transporting – 26 – D

Patent

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164/100

B26D 7/26 (2006.01) B21D 28/34 (2006.01)

Patent

CA 1159359

PUNCH RETAINER Abstract of the Disclosure A punch and retainer assembly wherein the punch has a non-circular punching end and a flattened surface at the upper end of its side wall. The punch also has an axially extending, radially inwardly in- clined flat surface below the flattened side wall por- tion. The punch retainer includes a vertically movable latch having cylindrical surfaces adapted to engage the flat inclined surface on the punch and a flat inclined surface on the retainer in wedging relation to retain the punch within the retainer. Means are provided for permitting the punch to be inserted into the retainer only when the flattened surface thereof is aligned parallel with the axis of the latch. A strong leaf spring biases the latch downwardly into engagement with the flat inclined surface on the punch so that the cylin- drical surface of the latch engages the flat inclined surface on the punch with line contact that is perpen- dicular to the vertical axis of the punch.

395924

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