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| | Inside Your Bingo - Ball Lifter |
 | | Almost all bingo machines have automatic ball lifters; that is, a motorized unit that raises each ball up to playfield level, instead of using a manual ball lifter as in most other pingames of the same period. |
 | | Attached to the playfield is a relay, the lifter start relay, and two switches connected with the ball runway (the channel running from the ball shooter to the top of the playfield through which each ball passes when first shot by the player). |
 | | When the ball is shot, and leaves the runway, it pushes up on the ball gate switch, momentarily opening its contacts, thus dropping out the lifter start relay. |
| bingo.cdyn.com /techno/howtheywork/insidebingo/ball_lift.html (297 words) |
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