Urban-Joy Process, improvement of Kinemacolor, later called Kinekrom
“In the design of apparatus Urban was assisted after 1905 by Henry W. Joy. The Urban-Joy perforator appeared in 1906. The Urban-Joy anti-firing device, a shutter to prevent the firing of inflammable film when projectors broke down, was another of their inventions.”
(Thomas, David B. (1969): The first colour motion pictures. London: Her Majesty’s Stationary Office 1969, p. 17)
McKernan, Luke (2003): ‘Something More than a Mere Picture Show.’ Charles Urban and the Early Non-Fiction Film in Great Britain and America, 1897-1925. Diss., Birkbeck College, University of London, pp. 122-194.
Thomas, David B. (1969): The First Colour Motion Pictures. London: Her Majesty’s Stationary Office, on p. 17.