Perforating device
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United States of America Patent
Stats
-
Oct 22, 1985
Grant Date -
N/A
app pub date -
May 29, 1984
filing date -
May 28, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for perforating a web or sheet of material, includes a rotatable male die carrier roll having at least one radially extending cylindrical bore opening into its outer periphery, and a male die holder comprising a hollow cylinder having an outer diameter substantially equal to the diameter of the bore and being removably located within the bore. The outer and inner cylindrical surfaces of the hollow cylinder are substantially smooth, and the cylinder has a through slit extending in a radial direction completely between such surfaces and completely between opposite ends thereof. And, means are provided for applying an external force against the cylinder for frictionally holding a male die member in place therewithin, the slit in the cylinder permitting it to yield to such force supplying means.
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