Early Telephone Apparatus
This first Commercial Telephone was called the box telephone, 1877. The round, camera—like opening on this box instrument served as transmitter and receiver, needed mouth—to—ear shifts. Developed by Bell in the fall of 1876, it went into service in 1877 when a Boston banker leased two instruments which were attached to a line between his office and his home in Somerville, Mass. The box was sometimes as much as fourteen inches long to accommodate a big horseshoe magnet. Reproduction marked serial number BT 229, Historical Replica, made by Columbine Machine Shop, 1835 South Acoma street, Denver, Colorado, 80223
Box telephone
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