Destructor for microfilms and negatives - has receiver for sheets or rolls destroyed by adjustable electrically fed heater which is sealed

摘要

The equipment is for rendering useless single films, packets, rolls and bulk of negatives etc. used for micro copying, photo copying, and typewriting. The treatment is thermal or cryogenic. It has a metal container, or one of synthetic material to keep all fumes inside. There is a heat resistant wire or band to open packages and to give good results. There can be placed inside a gas absorbent. The heater is fed either from the mains or by battery. The equipment has tart and stop controls, speed control and visual control. A receiver takes rolls or sheets and this is connected to the destructor portion.