F. H. Richardson's bluebook of projection (1942)

Page scan 000714 from F. H. Richardson's bluebook of projection

Record Details:

Title:
F. H. Richardson's bluebook of projection
Date:
1942
Publisher:
New York : Quigley Publishing Company, Inc.
Volume:
F. H. Richardson's bluebook of projection
Leaf #:
000714
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:
July 11, 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.

698 RICHARDSON'S BLUEBOOK OF PROJECTION THE TROUBLE TESTS • THE CONDITION FOUND • NEXT • TEST 14. Remove speaker unit and open as necessary to examine diaphragm mounting Diaphragm loose Diaphragm mounting normal No. No. 15 16 15. Tighten diaphragm, checking centering with proper shims as required TROUBLE CURED Some distortion remains No. 16 16. Observe diaphragm appearance Diaphragm bent Diaphragm torn Diaphragm normal No. No. No. 13 13 17 17. Using proper shims, check centering of voice coil Voice coil properly centered Voice coil off center No. No. 19 18 18. Center voice coil (if it shows no signs of being damaged, or loose on the diaphragm) TROUBLE CURED Some distortion remains No. 19 19. Remove diaphragm and inspect voice coil for damage, Icoseness, etc. Voice coil damaged or loose No. 13