Servicing projection equipment (1932)

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
000146
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
August 15, 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.

130 PROJECTOR (d) — Worn intermittent sprocket teeth will also cause this trouble. Replace the sprocket, but do not reverse it. 6. Friction Drive of Arc Controller or Motor Drive Wears Excessively (a) — This may be due to poor leather facing, which should be replaced with a better grade. (b) — Too much tension between the driving disc and the friction material will also cause this trouble. 7. Friction Material Develops Flat Spots (a) — The controlling lever, undoubtedly, has been left in position when it was idle, and therefore an undue pressure has been exerted on certain points. Watch this in the future. (b) — The disc covered by the material is not running true and therefore bears more at one point than at other points. The friction material may not be the same thickness at all points and so may have worn unevenly. If you are unable to correct the fault by carefully removing the excess material until it is even all around, it will be necessary to obtain some new material which is even throughout. 8. Friction Drive Fails to Operate Projector (a) — The motor may/ be out of order. If any