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 #:
000198
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:
August 01, 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.

180 RICHARDSON'S BLUEBOOK OF PROJECTION the film catch on a sprocket idler, either ripping the film in two or splitting it down its length for several feet. It stops the show and creates a dangerous fire hazard. (30) Three factors are important in the making of a good splice: careful, intelligent work, good film cement and the proper tools. The day of hand-made splices is past. The several film splicers on the market all give good results and one of them should be in every projection room. (31) In making splices, film ends should be cut at the right place and cut square. The stub end must be exactly the right length ; if it is too short it will be weak and if it is too long it will be stiff. Scrape the emulson from the Fig. 56.— Examples of worn intermittent sprocket teeth. stub end exactly to the center of the frame line and no further. The line at the end of the scraping must be straight and at right angles to the length of the film Scrape to the proper depth so as to remove all the emulsion and slightly roughen the celluloid beneath. If the emulsion is not all scraped away the splice will not hold. If the scraping is too deep it will weaken the film. If the film is dry and inclined to brittleness the splice will break after a short time. These are factors that have to be watched carefully in the process. The rear or celluloid side of the film must also be