17.5 mm movie projectors, from a 1908 Advertisement

Enoch J. Rector designed and manufactured the Ikonograph as early as 1902, but certainly by 1905 it was in production. He apparently used the same projector mechanism for a variety of differently named or un-named machines. The best source for more information on these machines is Alan Kattelle, HOME MOVIES a History of the American Industry. 1897-1979, Nashua, New Hampshire, 2000.