Coin-operated telephone
In 1889, William Gray of Hartford, Connecticut, received U.S. Patent No. 408709 for a “Coin-Controlled Apparatus for Telephones.” It was developed by George A. Long, and the first pay phone was installed on the corner of Main Street and Central Row, in Hartford, Connecticut, that same year. A coin-controlled lock prevented the sending of messages, but messages were allowed to be received. It had a magneto-bell typical of a telephone at that time. That would be operated for the purpose of calling the central station by pressing the button 0 and turning a crank at the same time.