Edison in 1902 started to Gold Mould cylinders, this process uses a oversized groove and a large wax master. The master is placed in a vacuum with 2 pieces of gold leaf. High voltage is introduced to the gold leaf in the bell jar, and vaporizes...
Edison in 1902 started to Gold Mould cylinders, this process uses a oversized groove and a large wax master. The master is placed in a vacuum with 2 pieces of gold leaf. High voltage is introduced to the gold leaf in the bell jar, and vaporizes...
Edison in 1902 started to Gold Mould cylinders, this process uses a oversized groove and a large wax master. The master is placed in a vacuum with 2 pieces of gold leaf. High voltage is introduced to the gold leaf in the bell jar, and vaporizes...
The Columbia Graphophone Model AB, called the “MacDonald”, is a rare unusual cylider phonograph which was designed to play 5 inch diameter “Concert” cylinders. The large mandrel can be removed to reveal a conventional mandrel for playing...
Grant, in a single horse-drawn carriage, meets a carpet-bagger holding a Post-Office reccomendation. The Carpet-bagger says: 'It's about time you got back, there's been 16,000,000 people wiatin here for you, some's got married, some's gone dead on...