The extension 48 serves to deactivate the motor 20 by means of a microswitch 50 disposed within the first end 14 of the frame 12, thus precluding {HEAD ~ further advance} of the plates P along {TAIL ~ the rod} 26 when a single plate P drops from the end of the rod 26 to trip the switch extension 48, and open the switch 50 
The extension 48 serves to deactivate the motor 20 by means of a microswitch 50 disposed within the first end 14 of the frame 12 , thus precluding { HEAD ~ further advance } of the plates P along { TAIL ~ the rod } 26 when a single plate P drops from the end of the rod 26 to trip the switch extension 48 , and open the switch 50
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