Functioning mechanism of a coin-op pool table's ball return system:
Coin-operated pool tables have a unique mechanism that ensures the cue ball is returned to the player, allowing for continuous play without the need for additional coins. This ingenious design relies on the cue ball's larger size and the presence of a metal guide within the ball return channel.
Firstly, the cue ball, which is slightly larger than standard balls, is easily distinguishable by the table's internal mechanism. On average, it measures approximately 2.375 inches (60.3 mm) in diameter, larger than a normal ball by about 2 mm.
When balls are pocketed and fall into the tray, they roll down a track. A metal strip or guide inside the tray redirects the cue ball to a different path, while the other balls continue down their own track to the ball storage tray. The cue ball is diverted back to a separate return channel, allowing it to come back to the player for continued play.
The other balls are held in a collection chamber until someone wants to play a game and inserts coins. Numbered balls remain lined up in this chamber, ready for the start of a new game.
In some instances, the cue ball may be magnetic, which can cause it to behave differently from the other balls. However, not all coin-operated tables use magnetic cue balls. If a magnetic cue ball is used, it is separated from the numbered balls by a magnetic detector.
It's worth noting that the larger cue ball might disrupt the play of some advanced pool players. Beginning pool players, on the other hand, might not be affected by the larger cue ball. If a player pockets the cue ball (a scratch), it needs to be returned to play.
In the event of a scratch, the oversized cue ball is separated by a radius gauging device and directed through a second chute. It falls out into an opening on the side of the table, ready for the player to pick up and continue their game.
The coin-operated pool table also features a system of chutes connecting to six pockets. Each chute sends pocketed balls to the collection chamber, where they are lined up ready for the start of a new game.
Table manufacturers have proposed various solutions to allow the cue ball to be returned, such as light sensors, metallic core balls, and balance mechanisms. These innovations aim to improve the overall playing experience on coin-operated pool tables.
The distinctive size of the cue ball, slightly larger than standard balls, is a feature that stands out in the coin-operated pool table's internal mechanism, allowing for its easy separation from the numbered balls. On the contrary, technology in the form of advanced innovations like light sensors, metallic core balls, and balance mechanisms are being proposed by table manufacturers to enhance the overall playing experience on coin-operated pool tables, potentially making the game more enjoyable for both beginners and advanced players.