Patent ID: 6354203
Filing Date: 2002-03-12
Classification: B65H

Abstract:
A belt drive for a machine for processing flat printing materials, comprising an endless belt revolving during operation, a roller about which said belt is partially looped, a frame with respect to which said roller is adjustable between a working position, wherein said roller keeps the belt tensioned, and a position moved away from said working position, wherein the belt is untensioned, a spring device for biasing said roller into said working position thereof, a double crank by which said roller is articulated with said frame, and a stop which, due to a change in position of said double crank from a position corresponding to said working position of said roller into a position corresponding to said moved-away position of said roller, is carried out to a given extent beyond a dead-center position of said double crank, prevents a change in position beyond said given extent.