Sound motion pictures : from the laboratory to their presentation (1929)

Record Details:

Title:
Sound motion pictures : from the laboratory to their presentation
Date:
1929
Publisher:
Garden City : Doubleday, Doran & Company, Inc.
Volume:
Sound motion pictures : from the laboratory to their presentation
Leaf #:
000141
Language:
English
Subjects:
Motion Pictures, Motion pictures--Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
March 28, 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.

OPERATING MANUAL 121 that these tubes cannot be used for the amplifier after they have once been used for the rectifier. There is also provided on this panel a plate current meter — also a starting switch for the 42-A amplifier.) 43-A AMPLIFIER PANEL (This amplifier has two Western Electric 211 type vacuum tubes used in the amplifier — also two Western Electric 211 type vacuum tubes used in the rectifier. A starting switch is also provided.) VIII. Starting and Testing 1. synchronous pick-up mechanism Each day, before the house opens, projectionists should test the horns individually, lubricate the projector and pick-up mechanism, and check the operation. Two or three records or sound films should be on hand for the purpose. Records of piano, violin, or orchestra selections are most suitable. It is furthermore desirable that two copies of each record or two prints of each film be used. After starting and testing the amplifier equipment the mechanism and horns may be tested as follows: 1. Turn off all theatre horns. If individual dial switches are provided for each horn, set the controls at zero, turning all the way to the right. Keep the monitor horn on with the control at the usual setting. 2. On the fader, set the pointer at zero. If installation includes both film and disk reproduction, see that film-disk switching arrangement is set for the type of pick-up which is to be tested. 3. On each of the two machines which are to be used oil the universal joints on the shaft connecting the upper and lower combined disk and film and oil the following spots, which are all on the attachment mechanism.