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 #:
00097
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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82 ARC LAMPS WITH SMALL CURRENTS [Cn. Ill n FIG. 43. THE SMALL ARC LAMP OF REICHERT. This is arranged in the figure for giving a parallel beam of light from the small condenser; and the mechanism for feeding the carbons can be actuated at a distance by means of a Hooke's joint and rod. a The horizontal or positive carbon. b Clamp for holding the lamp to the upright at any desired height. c Milled head of the feeding mechanism for the carbons. d Rod extending from the Hooke's joint. e S-j f £• Holders and clamping screws for the carbons. / Terminal points of the carbons where the arc is formed. ra The tube holding the condensing lens. It is cut away on one side to show the carbons. pn The condensing lens in the end of the tube. It is at the principal focal distance from the crater and the diverging beam is made parallel; by pulling it to the right the beam will be converging. WIRING AND CONNECTING THE ARC LAMP WITH THE HOUSE CIRCUIT § 128. Wiring. — The wiring is in principle exactly as for the large current arc lamp (fig. i, 2, 45). One end of a double, flexible cable of sufficient length (2 meters, 6 ft. at least) is connected with a separable attachment plug (fig. 49) . The two wires near the other end of the cable are separated for a short distance, and'one wire is cut. The cut ends of this wire