Living pictures; their history, photoproduction and practical workingWith a digest of British patents and annotated bibliography . , which is moved by gearingat half the angular speed of the frame ; consequentlythe rays are maintained optically stationary with regardto the projection-lens. When the frame reaches theextreme of its movement to the left, both it and themirror are rapidly returned to their original positionsby means of cams. 152 LIVING PICTURES. CAMPBELLS MIRROR APPARATUS. This machine (Steward and Frosts United StatesPatent No. 588,916) is shown in Fig. 165, and de-pends upon the
Living pictures; their history, photoproduction and practical workingWith a digest of British patents and annotated bibliography . , which is moved by gearingat half the angular speed of the frame ; consequentlythe rays are maintained optically stationary with regardto the projection-lens. When the frame reaches theextreme of its movement to the left, both it and themirror are rapidly returned to their original positionsby means of cams. 152 LIVING PICTURES. CAMPBELLS MIRROR APPARATUS. This machine (Steward and Frosts United StatesPatent No. 588,916) is shown in Fig. 165, and de-pends upon the same opticalprinciples as the foregoing8 apparatus. The band runs?< over a drum, being drawn from a box, 8, and illumin-I ated by means of a mirror,I 22. As it is only designedI for inspection purposes, the pictures are seen throughmagnifying eyepieces, 6, therays being rendered opticallystationary by means of amirror, 5, tilted by means ofa lever, 19, actuated by pegs,20, on the drum. In addition,it is suggested that the instrument may be employed(of course without the film) for the inspection ofmoving machinery, Fig. 16: ANTHONY S SPIRAL LANTERN. This apparatus may also be used as a camera; itsarrangement as a lan-tern is shown in More than twohundred pictures maybe obtained, or pro-jected from, a plateeight inches in dia-meter, and the generalprinciples upon which Fig. 166. these spiral cameras areworked will be better explained in connection with
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectmotionpictures
