returns to its normally closed state to energize coil 71 with regard to the circuitry of fig5 coil 71 closes contact r71 1 whereby rheostat 98 is input to the controller 86 via pin p2 and is set so as to run the labeller at a 34 tick over 34 speed this clears the bottles out of the machine at a speed of perhaps 50 or 60 bottles per minute to ensure that no freshly glued labels remain on the labelling pads simultaneously with this action the arm 52 of stop 28 is extended across the conveyor this is a result of contact r48 1 opening to de energize coils 74 and 78 and opening r74 4 and r78 3 solenoid 102 is then de energized thus permitting the arm 52 to extend across conveyor and stop further flow of bottles into the labeller the machine may also be operated in the manual mode by moving switch 82 to the manual position and switch 100 to the manual position with switch 82 in the manual position this actuates coil 70 to close contact r70 1 shown in fig5 thus the setting on rheostat 104 controls the speed at which the labeller operates and which may be manually varied in addition moving switch 100 to the manual position withdraws the arm 52 by energizing solenoid 102 to permit a flow of bottles into the labeller the speed controller which may be instead a programmable microprocessor provides an overall control.