Currency stacker resistible against unauthorized extraction of currency therefrom

A currency stacker for accumulating bills supplied thereto through conveyer means from validator means, said currency stacker comprising:

• a metallic casing including first and second chambers and a slit through which a bill is supplied to the first chamber;
• pusher means positioned within the first chamber of said casing for pushing a bill in said first chamber into said second chamber, said pusher means comprising a base plate, a pusher plate and link means connecting said base plate and pusher plate for traveling said pusher plate from a retracted position within said first chamber to an extended position in the second chamber toward and away from said base plate to push the bill into the second chamber by movement of said pusher plate from the retracted position to the extended position;
• and
• driving means disposed within said first chamber for operating said link means to travel said pusher plate between the retracted and extended positions;
• wherein said driving means comprises:
• a drive shaft supported by said casing;
• a pulley rotatably mounted on the drive shaft;
• a wire wound around the pulley and connected between said casing and said link means;
• a gear mounted on said drive shaft for transmitting the driving force from said conveyer means to said drive shaft;
• and
• a spring for resiliently urging said pusher plate, thereby said pulley pulling said link means via said wire against elastic force of said spring to cause said pusher plate to move to the extended position upon rotation of said drive shaft, said driving means retaining the pusher plate of said pusher means in the extended position to prevent movement of the bill from the second chamber to the first chamber except when the bill is supplied through said slit into said first chamber.