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The continuous motion mechanism consisted of a rotating disc carrying a pluraHty of matched lenses arranged around its periphery and passing in single line sequence across an adjustable opening in exact synchronism with a film moving downward in the focus of the lenses. Different mechanisms were made, with an equipment of lenses ranging from five to forty eight and in spaced relation depending on the height of the frame chosen.
In the intermittent mechanism the film was illuminated for about seven-eighths, and moved in about
one-eighth of a period. A "beater Continuous motion mechanism with
r , 1 1 1 1 V plurality of lenses.
type was first employed and later
followed by the geneva gear, a gear found in many makes of watches to prevent winding the spring too tight.
My work was my own, but viewing the art in historical retrospection from this late day, it is evident that the solution of the illumination problem was my only original contribution to the art as practiced from 1890 to the present time. I must confess that I don't quite understand why the thing wasn't hit upon by someone previously, it was so simple and so perfectly obvious when once done ; like the half turn of the screw which made the constant contact transmitter, which, in its turn, made the telephone a commercial article.
All my old apparatus was acquired by the United States National Museum in 1895 and there it can still be seen (on exhibit in the Graphic Arts department).
My projectors were motor driven and by some accident of design were built left-handed, a type which has since been followed, consciously on unconsciously, in the design of machines the world over.
Exhibitions to friends were given from time to time in 1891, 1892 and 1893, though my first exhibition of which any account appeared in printed publications, was in June of 1894.^^
In March following I secured the financial assistance of a local man and we built three copies of this early machine and exhibited them at the Cotton States Exposition, Atlanta, 1895.^^ These were the first of picture shows in a building built exclusively for the purpose.
Richmond Telegram, Richmond, Indiana, June 6, 1894. " Baltimore Sun, Oct. 3, 1895; Atlanta Journal, Oct. 21, 1895; Albany, New York, Times-Union, Oct. 21, 1895.
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