Living pictures; their history, photoproduction and practical workingWith a digest of British patents and annotated bibliography . didnot even wish to reproduce several successive ones, orthe successive phases produced by motion. Severalarrangements were suggested by him, in all of whicha shutter was geared to expose the plates when theywere perpendicular to the axis of the lens. Thesensitive surfaces succeeded each other at regularintervals, being placed either on a prismatic drum,sliding frame, or dropped in series from an upperchamber into a lower one; the latter arrangement,according to th
Living pictures; their history, photoproduction and practical workingWith a digest of British patents and annotated bibliography . didnot even wish to reproduce several successive ones, orthe successive phases produced by motion. Severalarrangements were suggested by him, in all of whicha shutter was geared to expose the plates when theywere perpendicular to the axis of the lens. Thesensitive surfaces succeeded each other at regularintervals, being placed either on a prismatic drum,sliding frame, or dropped in series from an upperchamber into a lower one; the latter arrangement,according to the drawings, being almost identical with avery common method of plate-changing employed inpresent-day hand cameras. Edwards, in 1867, sug-gested the taking of successive separate pictures on oneplate. Ducos du Hauron took a French patent (,976) in 1864 fo^ ^^ apparatus for the photographicreproduction of any scene whatever, with all the changeswhich it has undergone during a specified time. Thispatent, though issued, was not printed, owing to non-payment of fees; but if the manuscript still exists in 46 LIVING Fig. 47. Paris, it would be of great interest to ascertain the methods proposed. It is well to devote some attention to the years 1869 and 1870; that is to say, the period immediately preceding- the firstattempts in chrono-photography. Twoforms of apparatus,casually quoted onpage 21, give a veryclear idea of thestage of progress thenattained; and theyare the more inter-esting inasmuch asthe instrument in-tended for use withdrawn designs shows a greater approximation to modern machines than does the one which employed photographs. Browns apparatus, shown in Figs. 47 and 48, depended on non-photographic images, of which a series was painted on a polygonal glass plate, P, and dropped into a holder somewhat similar to a magic-lantern slide. A gear - wheel, shown in Fig. 48, served to rotate the designs, and was itself revolved intermittently by pins contained i
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectmotionpictures
