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.
324 RICHARDSON'S BLUEBOOK OF PROJECTION
necessary for smooth operation. Some projectionists prefer to make the loops as large as possible without forcing the film to rub on the upper or lower fire shields.
(128) In closing the subject of the projector mechanism we must stress again the importance of keeping it scrupulously clean. Lubricants should be selected carefully unless the one recommended by the projector manufacturer is used. Do not expect any projector mechanism to give good results unless it is kept in a state of repair and in perfect adjustment, and remember that "repair and adjustment" includes frequent, thorough inspection of the various parts.
(129) In addition to the foregoing general instructions, the projectionist needs very specific information about the particular make and model of the mechanisms entrusted to his care. These mechanisms are expensive. A fault in their operation can cause fire. The projectionist needs to know all he can about them, and different makes and models vary so greatly that detailed information about all of them cannot be included in the space available in this Bluebook. That data, for all projectors now on the market, would come close to filling another Bluebook the size of this one. The place to go for it is the instruction book of the manufacturer of the mechanism in question.
(130) Such instruction books are made available by manufacturers without charge or at nominal charge. They confine their information to concrete data. For example: (a) at what points of the mechanism should lubrication be applied; (b) how often and how much lubricant should be applied at each point; (c) what type or types lubricant should be used. Manufacturer's instruction books also often explain just how to go about removing and replacing a given gear or other item, down to such details as which screw to take out first. Also, they commonly contain diagrams in which every gear, shaft, sprocket, nut, bolt, screw or other part is identified by number. The best way to order a replacement is to identify the part needed by the number given in the manufacturer's book or pamphlet.