Name: Threaded, headed fastener, or washer making: process and apparatus > Apparatus for making headed fastener, e.g., nail, rivet, etc. > Having reciprocating die and heading means > And wedge closing dies
Description: Subject matter wherein the gripping-dies are opened and closed by the use of either a wedge structure or a diagonal cam slot both which are capable of engaging the dies and moving them to open and closed positions.
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