Cutting – Tool or tool with support – Rotatable type
Patent
1986-05-27
1990-10-16
Yost, Frank T.
Cutting
Tool or tool with support
Rotatable type
83332, 83698, 101226, B26D 122
Patent
active
049626868
ABSTRACT:
An improved perforating strip for use on printing presses formed of an elongated thin metal strip having a base portion of generally rectangular cross-section with flat upper and lower surfaces, the strip having integral upstanding teeth adjacent one edge, the edge of the strip opposite the teeth being curved from the lower surface to the upper surface providing a rounded edge which serves to substantially decrease the impression made in paper against which the strip is pressed, and in one embodiment the strip having an integral anchor portion downwardly extending from the edge opposite the teeth to penetrate the surface of a printing press impression cylinder.
REFERENCES:
patent: 2181197 (1939-11-01), Moritz
patent: 2659437 (1953-11-01), Huck
patent: 2842202 (1958-07-01), Boyd
patent: 3554070 (1971-01-01), Boyd
patent: 3570355 (1971-03-01), Spengler
patent: 3792637 (1974-02-01), Saunders
patent: 4391175 (1983-07-01), Christain
Boyd David
Boyd Harry
Smith Scott A.
Yost Frank T.
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