Install rolls of ticket tape in ticket dispensing machines.
What does a Ticket-Dispenser Changer do?
Changes code slugs and installs rolls of ticket tape in ticket dispensing machine before each race at racetrack: Unlocks machine with key and turns knob to reset number register to zero. Changes code slug so that different symbols are printed on tickets. Replaces depleted roll of ticket tape, threading end of tape through feed roller to type roller. Presses key of machine to obtain sample ticket. Examines ticket to ascertain that machine is printing correctly and adjusts machine to correct defects. Relocks machine.