Search Index ( bingo )

The search index assembly is mounted underneath the control unit cams just to the left of the search disk. It consists of a coil, some switches, and an arm. In it's inactive state, the arm is lowered away from the search ratchet, and the search wipers are free to turn (unless held by something else). When a winner is detected and payout is needed, the search index coin is activated and the arm engages a tooth on the search ratchet, thus causing the search wipers to stop on the winning contacts until the payout is complete.