INRICHTING VOOR HET TRANSPORTEREN, HET SAMENDRUKKEN OF HET AFPERSEN VANFOTOGRAFISCHE BLADEN

摘要

An adjustable device for advancing and/or compressing sheets or strips of photographic material comprises a pair of parallel sheet-engaging elastic rollers, a stub shaft extending axially from each end of each roller, preferably polygonal plastic bearing members rotatably receiving the stub shafts, a flexible metallic strap trained around each pair of bearing members, and means for changing the effective length of such straps to thereby move the axes of the rollers closer to or away from each other. The length changing means can comprise a screw which mates with one end portion of the respective strap and passes through a hole of the other end portion of such strap, a pressure transmitting plate interposed between the inner end of the screw and one of the corresponding bearing members, and an elastic cushion interposed between such bearing member and the plate.