Living pictures; their history, photoproduction and practical workingWith a digest of British patents and annotated bibliography . Fig. 163. PRESENT-DA Y AFP A It A TUS. 151 caslers angular mirror. In this apparatus (Fig. 164) a mirror is used to renderthe continuously moving- film optically stationary. Thefilm passes from the feed-roll 2 to the store-spool 3, incontact with the segmental frame 16, which has anopening, 27. This frame swings from right to left atthe same speed as the film, and is so arranged thatwhen starting on an oscillation a picture is outlined by. Fig. 164. the opening. Li
Living pictures; their history, photoproduction and practical workingWith a digest of British patents and annotated bibliography . Fig. 163. PRESENT-DA Y AFP A It A TUS. 151 caslers angular mirror. In this apparatus (Fig. 164) a mirror is used to renderthe continuously moving- film optically stationary. Thefilm passes from the feed-roll 2 to the store-spool 3, incontact with the segmental frame 16, which has anopening, 27. This frame swings from right to left atthe same speed as the film, and is so arranged thatwhen starting on an oscillation a picture is outlined by. Fig. 164. the opening. Light passes through this aperture, andthe picture to the mirror, 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
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectmotionpictures
