Roll fed rotary web device with improved perforator

Details Roll fed rotary web device with improved perforator Roll fed rotary web device with improved perforator

1976-05-19

1977-10-25

Schran, Donald R.

Cutting

Tool or tool with support

Pointed perforators

29465, 144130, 33185R, B26F 120

Patent

active

040551016

ABSTRACT:
Disclosed is a roll fed rotary web device such as a rotary offset or rotogravure web printing press or a collator, having an improved perforator. Also disclosed are examples of prior art perforators. The perforator is incorporated in a standard perforating cylinder which rotates during the process of perforation. Perforating blades are mounted in the perforating cylinder and several improvements relating to spring biased positioners of the perforating blade are illustrated.

REFERENCES:
patent: 2496800 (1950-02-01), Larkins
patent: 2801439 (1957-08-01), Meares
patent: 2814320 (1957-11-01), Dukes et al.
patent: 3894340 (1975-07-01), Ellis

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