Servicing projection equipment (1932)

Page scan 00084 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
00084
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.

68 BEARINGS or, if it is a two-element assembly, the elements may be forced too close together, thus causing the shafts to prevent armature "float" or play. If the armature does not show a slight end-play or "float," check it very carefully and remedy the trouble. 4. Brushes Wear Excessively (a) — Too much pressure is being applied to the brushes, or the springs may be set too tightly. Use just enough tension to make a perfect electrical contact, but not so much that it grinds the brushes against the surfaces with which they come into contact. (b) — The brushes may not have been set correctly, that is, not at the point of the least sparking or no sparking. Test this and see if the brushes have been changed from the setting which agrees with the manufacturer's marking located at the end of the bracket or at some other point. If the brushes are out of their correct positions readjust them immediately. 5. Brushes Stick in Holders (a) — There may be some dirt either on the brush or on the holder. The brush should not be loose enough to "jiggle," but it should have just a bit of free movement in the holder.