Controller for rotary collator

In a rotary collator having a high speed rotating drum with a plurality of bins therein from which sheets are ejected and a synchronously rotating programming disc for controlling the actuation of an electrical actuating means for a clamping means in each of said bins, which normally opens and closes during an ejection cycle, apparatus for preventing inadvertent actuation of said electrical actuating means operated by said rotating programming disc, said apparatus comprising:

• A. a plurality of selector pins mounted on said disc so as to be movable between two oppositely disposed spaced apart positions relative to said disc, said spaced apart positions corresponding to a closed or open position of said clamping means, said pins being equi-spaced with respect to one another;
• B. a circular follower adapted to be moved by contact with said pins between two operating positions depending upon the positions of said pins with respect to said spaced apart positions thereof;
• C. means for pivotably mounting said follower in position to be contacted by said pins as said disc is caused to rotate;
• and
• D. means responsive to a pivoted movement of said follower for operating said electrical actuating means for causing said clamping means to remain closed during the ejection cycle when the clamping means would normally be opened, said follower having a diameter sufficiently greater than the spacing between two adjacent pins so that said follower can move from one of said operating positions to the other only when said follower is contacted successively by two adjacent pins which are in said oppositely disposed spaced apart positions, whereby, as said disc rotates at a high rate of speed to cause said pins to move past said follower, said electrical actuating means cannot be inadvertently actuated to allow the clamping means to open during the ejection cycle when it should remain closed.