We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
i42 SOUND MOTION PICTURES
or an old-style Motiograph pedestal, a suitable adapter is required and will be shipped with the equipment. Three different types of adapters are used. They correspond to these three makes. If the exhibitor wishes to purchase a new lamp house he should order it equipped to mount on a Motiograph De Luxe pedestal.
V. SLIT ASSEMBLY
Slit assembly in attachment is accurately adjusted and tested. It must not be changed. To do so will interfere seriously with the reproduction. The screw clamping the lens barrel will be found to be sealed, and this seal is not to be broken under any circumstances.
VI. SLIT ASSEMBLY ALIGNMENT
Make a check to determine whether the film is running true through the film-reproducing attachment. This may be done by threading up a piece of unexposed negative film in the projector and attachment, with the emulsion side of film toward the lamp. Close the light gate and expose the film by turning on the reproducing lamp for ten seconds, at the same time giving the motor flywheel about two turns by hand. Now examine the band photographed by the image of the slit on the film to see how close it comes to the inner edge of the sprocket holes. This distance should be about .015 inch; if it is less, there is danger that noise may arise from light passing through the sprocket holes; or if it is more, noise may arise from the black line separating the picture from the sound by loosening set screw in the collar on the spindle of the film guide roller just above the reproducing attachment light gate, and by moving the light gate in or out as required. On older designs this collar simply slides; on newer designs it is threaded to facilitate close adjustment. The adjustment should be rechecked by use of the negative film.