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Handbook for motion picture and stereopticon operators (1908)

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58 Motion Pictuke of the theatre chairs; or on movable tressels, etc. In some cities this tresscl support must be made of iron while in others wooden framing is permitted. Pilot-Light. A pilot-light should be located in a wall-socket under the stereopticon shelf of this double stand, to furnish light to work by when the arcs are out. An extension cord with plug and socket lamp with guard is also very handy as it can be moved about while the machine is being set up. The Booth. In inclosing the machine and operator in hanging curtains, it will be found convenient to have some false lens hoods made, considerably larger than the projecting lenses, and mount them on a board vertically arranged in front of the lenses. Slits in the curtain are pinned snugly around these false lens hoods, and the curtain never swings into the line of picture projection. These curtains should be thoroughly fire-proofed. A Professional Machine. In projecting machines, the first important consideration is a mechanism which is not hard on the film; is smooth-running and quiet; which permits of framing the picture without disturbing the window, lens, or picture on the canvas; and that