Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine (1914)

Record Details:

Title:
Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine
Date:
1914
Author:
Gage, Simon Henry, 1851-1944
Publisher:
Ithaca, N.Y. : Comstock Publishing Company
Volume:
Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine
Leaf #:
000519
Language:
English
Subjects:
Lantern projection, Motion picture projection
Format:
Books
Contributor:
University of California Libraries
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
Bibliography: p. 693-703
Date Added:
July 19, 2022
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504 INSTALLATION OF ARC LAMPS [Cn. XIII The wire is fixed firmly under the set screw, and if the current is to be large, 30 amperes and more, the wire should be soldered to its connection after the screw is firmly set down. § 699. Connecting the conductors to the switch. — This is done exactly as for the attachment cap. In case direct current is used it is important to know which is the positive and which the negative wire. This should be determined before clamping the wire to the switch. The best method is by the FIG. 269. SEPARABLE ATTACHMENTS, POLARIZED (A) AND NON-POLARIZED (BC). (Cuts loaned by H. Hubbell. Inc.}. The attachments A and B are for the ordinary bulb socket. A is polarized so that the same polarity of the wires is insured, for the connection cannot be reversed. B is non-polarized and the polarity may be reversed every time the connection is made. C is for receiving an incandescent lamp ; connection is made with the supply by inserting the prongs into an attachment plug which has been screwed into a lamp socket. use of the arc lamp (§ 702), after the arc lamp and rheostat have been properly connected. § 700. Wiring the arc lamp, including the rheostat or other balancing device. — From one pole of the switch (fig. 270), a wire of the proper size and insulation is carried directly to the negative binding post of the lamp, i. e., to the post for the lower carbon. From the other pole of the switch a suitable wire is carried to one binding post of the rheostat. From the other bind