SELF-COCKING TWO BLADED PHOTOGRAPHIC SHUTTER

摘要

A self-cocking shutter including two blades, each of which is movable between first and second positions. The blades are positioned by springs which are arranged so that their forces do not act against each other. One spring moves a first shutter blade from its first to its second position and a second spring returns both of the shutter blades to their first positions.