. Moving pictures : how they are made and worked. viable; the handling of sensitised celluloid about asthick as a substantial wooden shaving, was infinitely moreexasperating than that used in the ordinary hand camera,for the latter was wider, thicker, and far shorter. The developing methods at first advocated were of thecrudest nature possible. Messrs. Lumiere tried to assist 76 ch. viii DEVELOPING AND PRINTING PICTURES 77 the tyro by comprehensive explanation of a very simpleway to carry out the task. They suggested suspendingthe coil of exposed film upon a rod slipped through thecentre of th
. Moving pictures : how they are made and worked. viable; the handling of sensitised celluloid about asthick as a substantial wooden shaving, was infinitely moreexasperating than that used in the ordinary hand camera,for the latter was wider, thicker, and far shorter. The developing methods at first advocated were of thecrudest nature possible. Messrs. Lumiere tried to assist 76 ch. viii DEVELOPING AND PRINTING PICTURES 77 the tyro by comprehensive explanation of a very simpleway to carry out the task. They suggested suspendingthe coil of exposed film upon a rod slipped through thecentre of the bobbin to form a kind of spindle, upon whichthe coiled film was free to revolve over the bath. Theoperator was then told to unwind the coil very rapidly byhand, passing it into the bath between the fingers, whichacted as a guide. It appeared an absurdly simple operation, but withoutconsiderable practice it defied success. One had to beextremely careful not to damage the delicate sensitisedemulsion of the film while uncoiling it; that no greasy. By courtesy of Messrs. Butcher & Sons, Ltd. Fig. 7.—How the Film is Wound*upon theWooden Frame for Developing. matter, such as perspiration from the fingers, might comeinto contact with the gelatine surface; and no bubbles mustbe produced while feeding the slippery strip into the Robert Paul experienced these troubles, and displayedconsiderable ingenuity in the evolution of special meansto avoid them. The efficiency of his method is proven bythe fact that in the main it is practised to this day. His solution of the problem was simple, safe, and satis-factory from every point of view. He took a light, squarewooden frame, similar to that in Fig. 7, which restedloosely upon two uprights in such a way that it couldrevolve. The free end of the film was fixed to one side ofthe frame, and the film was then passed from one side to 78 MOVING PICTURES chap. the other, as if being wound upon a wheel, as it wasuncoiled from the spool, t
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