Transactions of the Society of Motion Picture Engineers (1916)

Record Details:

Title:
Transactions of the Society of Motion Picture Engineers
Date:
1916
Publisher:
Washington D.C. : Society of Motion Picture Engineers
Volume:
Society of Motion Picture Engineers : incorporation and by-laws (1916)
Leaf #:
000253
Language:
English
Subjects:
motion pictures, Cinematography -- Periodicals
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Library of Congress, MBRS, Moving Image Section
Sponsor:
Library of Congress, Motion Picture, Broadcasting and Recorded Sound Division
Coordinator:
Media History Digital Library
Description:
Preceeded by an unnumbered issue published in 1916 called: Incorporation and by-laws
Date Added:
December 28, 2023
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.

printers, etc. Mr. Bell said they have been "forming" the teeth of the sprockets for their film printers, but that the method they are using for "forming" the teeth would probably not give satisfactory results in the production of a sprocket wheel of small diameter, such as is used for projection work. He said, however, they have given some thought to a method of "generating" the teeth that would be suitable for the production of sprocket teeth on a commercial basis with a sufficient degree of accuracy for practical purposes, and having in mind the present almost universal use of the film perforations with the circular ends, and the almost unsurmountable difficulties in the way of undertaking to get the manufacturers to change the form of tooth they are at pres FiG. 3 Sectional plan view showing teeth and film perforations. ent using, largely because of the great amount of expense involved in changing their machinery, cameras, etc., the Society thought best to adopt the film perforation with the circular ends with the understanding that in taking such action it would not necessarily be definite and could be changed at some future date in case developments should come about that would make a change advisable. A diagram showing a strip of film with perforations, measurements, etc., adopted as a standard by the Society, appears in the latest issue of the book of standards, a copy of which is here reproduced. Through the courtesy of Mr. Howell, I have secured blueprints 67