Under the shutter is a board where the electrical switches and bell are. When the balls drop either through the Signal hole or when the shutter is pushed forward at the start of a new game, they roll down this board to the ball collection area. When the balls roll over the leaf switches, they close and touch the contact on the top half of the switch to the bottom half which lies under the table which close the electrical connection which activates the solenoid which pushes the armature inside the coil upwards which in turn opens the gates on the playing field. All of this is run by a 6 volt battery.
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| Top of the electrical switches |
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| Ball collection area leading to the ball lifter |
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