Handbook of projection for theatre managers and motion picture projectionists ([1922])

Record Details:

Title:
Handbook of projection for theatre managers and motion picture projectionists
Date:
[1922]
Publisher:
New York, Chalmers
Volume:
Handbook of projection for theatre managers and motion picture projectionists
Leaf #:
00018
Language:
English
Collection:
Books
Format:
Books
Contributor:
Gerstein - University of Toronto
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
14
Date Added:
July 19, 2022
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MANAGERS AND PROJECTIONISTS Description of Electric Generator 11 and 21 What Voltage and Amperage Depend Upon 11 How Dynamo Starts to Generate Current 12 Brush— What It Is 22 Brush Rocker— What It Is 22 Field Coil— What It Is 11 and 28 Permanent Magnet— What It Is 12 and 28 Residual Magnetism— What It Is 12 Magnetic Saturation — What It Is 12 Field Rheostat and What It Is For 28 Constant Current Dynamo 25 Grounds Grounds 352 Meaning of Term 353 Edison Three-Wire System Grounded 353 Reason for Grounding Edison Three-Wire System.. 354 Test Lamp Shows No Light Neutral to Ground.... 355 Testing for Grounds 356 Locating Grounded Coil in Rheostat 358 What "Ground" in Rheostat Cannot Be Detected by Test for Grounds ? 359 Various Tests for Ground in Rheostat as a Whole.. 359 Grounding the Projector, and Reason Therefore 360 Effect of Ground in Projection Lamp 360 Test for Grounds Daily 361 One Prolific Source of Grounds in Lamp 361 Method John Auerbach Uses in Testing for Grounds 346 Permanent Projection Room Ground Wire 346 Insulation Its Purpose 80 Character Varies with Character of Service 81 Increased Voltage Demands Higher Insulation Resistance 81 Insulating Substances 80 Types of Insulation 80-81-82 No Absolute Non-Conductor of Electricity 80 Of What R. C. Insulation Consists 80-81 Why Coating Wire with Tin Is Necessary with R. C 81 Why R. C. Wires Have Lower Capacity Rating Than Others 83 Type of Insulation Permissible in Conduit 83 Single Braid R. C. Permitted on Wires Smaller Than No. 8. 83 be