Motion picture handbook; a guide for managers and operators of motion picture theatres ([c1916])

Record Details:

Title:
Motion picture handbook; a guide for managers and operators of motion picture theatres
Date:
[c1916]
Publisher:
New York City, The Moving Picture World
Volume:
Motion picture handbook; a guide for managers and operators of motion picture theatres
Leaf #:
000372
Language:
English
Collection:
Books
Format:
Books
Contributor:
University of California Libraries
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
Date Added:
July 19, 2022
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.

FOR MANAGERS AND OPERATORS 353 the secondary, whereas with a 220 volt supply it would give nearly 300. Second, except in small sizes, cartridge and plug fuses are only made in multiples of 5 amperes, that is to say 20, 25, 30, 35, etc. Now with a 110 volt supply 30 ampere fuses will deliver approximately 60 amperes on the secondary, but the capacity of the fuses and of the transformer is so nearly :alike that there might be trouble with 30 ampere fuses blowing. If, however, you install others of 35 ampere capacity, the next size, it makes a possible difference of between 10 and 15 amperes at the arc, with the 110 volt supply, and between 20 and 30 amperes with the 220 volt supply, whereas 5 amperes difference in the fuses on the secondary means 5 amperes, and no more; therefore it is possible to fuse much more rationally on the secondary than it is on the primary. Compensarcs ALTERNATING CURRENT TYPE A, FORM 4 This device is manufactured by the Fort Wayne Electric Works for use on alternating current circuits only. It is self-contained and requires no auxiliary rheostat or other controlling mechanism. Before installing the compensarc examine the name plate to see if the rating agrees with the frequency and line voltage of your service. Place the compensarc directly beneath the lamp house of the pro-i jection machine if possible, otherwise in some position convenient to the operator to allow him to adjust the amperage of his arc. Connect both wires from the Power Company's service through a double-pole* fused switch to the two terminals of the compensarc marked "LINE." Connect two terminals marked "LAMP" to the projection arc terminals through the double-pole operating switch on the projection machine. As this is an A. C. device there are no positive ^^^ or negative wires. ^^p Figure 164.