if a bottle has a cap on it both lever 33 and lever 35 will be tripped in this case the signals 34 cancel each other out 34 and no signal is sent to the gate diverter if a bottle is missing a cap both levers will initially be tripped however as the bottle travels down the conveyor lever 33 will drop because no cap is there to support it thus the signals do not cancel and an activating signal is sent to the gate diverter thereby diverting the bottle off of the production line as in the case of a cocked cap if the bottles are capped with foil caps proximity detector 56 is utilized as shown in fig5 instead of the mechanical lever arms utilized in the cap no cap detector the proximity detector 56 includes a proximity switch 60 and a beam switch 58 proximity switch 60 may be of any suitable type such as the capacitive model made by efector king of prussia pa similarly beam switch 58 may be of any suitable type such as the diffuse reflective model made by automatic timing amp controls co also of king of prussia pa these switches are coupled to the gate diverter if it is determined that the foil cap is missing an activating signal is sent.