Progressive stamping press
OwnerJohn C. Vecchiinventor
Life of this patent
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Abstract
A continuous metal strip is fed lengthwise along a line of dies intermittently from one end of the line to the other beneath a vertically reciprocating ram carrying a plurality of punches that are slidable vertically in the ram from a projecting operating position to a retracted inoperative position. Each punch is selectively movable automatically from either of those positions to the other independently of the rest of the punches so that different punches can punch a strip at different times while the strip is passing through the press.
Claims8
In a progressive stamping press having an elongated die support, a plurality of dies on said support spaced apart lengthwise thereof, and a vertically reciprocable ram above the die support, the improvement comprising a plurality of punches carried by said ram above said dies and slidable vertically relative to the ram from a projecting operating position to a retracted inoperative position, and means carried by the ram for selectively moving each punch from either of said positions to the other independently of the rest of the punches so that different punches can punch a strip at different times while a continuous metal strip is passing through the press.
Dependencies are inferred from the claim text.