Automatic feeder

An automatic feeder for feeding originals in a photographic copying machine of the type in which an original is transported across a transparent exposure plate for projecting in an exposure station of the copying machine, comprising supporting means for receiving a stack of originals lying in said stack in a predetermined orientation in which lower sides of the originals face said supporting means, means for transporting an original being processed from said stack towards said exposure plate and from said exposure plate back to said stack and operative for returning the original to said stack in said predetermined orientation, said exposure plate having a front end and a rear end as viewed in the direction of transportation of the original;

• a number of non-driven tappet rollers positioned against said exposure plate at the front end thereof for receiving a front edge of the original when the latter is positioned on said exposure plate;
• displaceable stop means on said supporting means for adjusting said supporting means to differing lengths of originals being processed;
• first adjustment means for displacing said stop means and adjusting the latter on said supporting means;
• second adjustment means connected to said tappet rollers for adjusting the latter relative to said exposure plate in said direction of transportation, said first adjustment means being operatively connected to said second adjustment means so that the adjustment of said stop means to a predetermined format length of the originals by said first adjustment means causes a corresponding adjustment of said tappet rollers by said second adjustment means, said tappet rollers being biased by springs, said first adjustment means including a first slide connected to said stop means and said second adjustment means including a second slide connected to said tappet rollers, the feeder further including an adjustment lever operatively connected to said first slide and said second slide.