F. H. Richardson's bluebook of projection (1935)

Record Details:

Title:
F. H. Richardson's bluebook of projection
Date:
1935
Publisher:
New York : Quigley Publishing Company, Inc.
Volume:
F. H. Richardson's bluebook of projection
Leaf #:
000259
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
{"Media History Digital Library","Jeff Joseph"}
Coordinator:
Media History Digital Library
Description:
Date Added:
June 04, 2024
Something wrong or inaccurate about this page? Let us Know!

Thanks for helping us continually improve the quality of the Lantern search engine for all of our users! We have millions of scanned pages, so user reports are incredibly helpful for us to identify places where we can improve and update the metadata.

Please describe the issue below, and click "Submit" to send your comments to our team! If you'd prefer, you can also send us an email to mhdl@commarts.wisc.edu with your comments.




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.

THE PROJECTOR 241 fire shutter is a decidedly dangerous condition, especially in one-man rooms. Size of Loops (126) Between the upper and lower loops in the projector mechanism the film moves intermittently exactly three-quarters of an inch each time. Both loops must therefore contain that amount of slack film, and a little more. (127) To arrive at the required loop size, thread in a film and operate the mechanism slowly by means of the flywheel; watch the loop action and gradually diminish the loop length until it has just the amount of slack 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.