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