Master holding mechanism for duplicating machines

Details Master holding mechanism for duplicating machines Master holding mechanism for duplicating machines

1986-11-26

1989-06-20

Coughenour, Clyde I.

Printing

Flexible-sheet-securing devices

101DIG36, B41F 2712, B41F 1354

Patent

active

048401218

ABSTRACT:
A mechanism for holding a master or printing plate on a cylinder of a duplicating or printing machine. An elongated housing, including an anvil, extends transversely across the periphery of the cylinder. A die plate extends along the housing above the anvil and defines a gap between the die plate and the anvil for receiving an edge of the master. The die plate has a series of holes spaced therealong. A pin bar extends along the housing below the anvil for moving pins into the holes in the die plate. An actuator mechanism, including pivot pins and link arms, is operatively associated between the housing and the die plate and between the housing and the pin bar for conjointly moving the die plate toward the anvil to close the gap and moving the pins through the master and into the holes in the die plate to hold the master. The pins have sharpened ends for piercing masters that are not provided with pre-punched perforations.

REFERENCES:
patent: 348417 (1886-08-01), Rich
patent: 2320239 (1943-05-01), Huck
patent: 2386214 (1945-10-01), Harrold
patent: 2608750 (1952-09-01), Cluzel
patent: 3110255 (1963-11-01), Jeschke
patent: 3188952 (1965-06-01), Miller
patent: 3191532 (1965-06-01), Hermach
patent: 3702098 (1972-11-01), Eburn
patent: 3750572 (1973-08-01), Etchell
patent: 3835778 (1974-09-01), Bock

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