Alexander Bain introduced the facsimile machine between 1843 and 1846. Alexander Bain introduced the facsimile machine in 1843 to 1846. The world's first practical operating facsimile machine ("fax") system put into use was by Caselli. In 1966, Xerox released the Magnafax Telecopiers, a smaller, 46-pound facsimile machine. A subsequent investigation traced the cause of the fire to a faulty facsimile machine. The Scottish inventor Alexander Bain introduced the facsimile machine between 1843 and 1846.