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The Counterfeit Coin Detector Patent Archive

Every device ever patented to catch a bad coin

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Toll-box

Patent drawing of a wall-mounted telephone pay station showing the magneto signal box, battery box, telephone receiver, bell, and an attached coin toll-box with internal chute and signal mechanism, alongside detailed sectional views of the toll-box interior and transmitter arm.

COIN-CONTROLLED TELEPHONE PAY-STATION.William Gray · February 8, 1898

United States patent drawings and specifications are works of the U.S. government and are in the public domain — they were never copyrighted. Download them, print them, frame them. Our commentary and descriptions are © 2026 The Counterfeit Coin Detector Patent Archive.

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