Motion picture projection : an elementary text book (1928)

Record Details:

Title:
Motion picture projection : an elementary text book
Date:
1928
Publisher:
New York : Technical Book Company
Volume:
Motion picture projection : an elementary text book
Leaf #:
000947
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Niles Essanay Silent Film Museum
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
September 21, 2023
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MOTION PICTURE PROJECTION 941 the frame (M-5) opposite. Then by means of the focusing screw (M-2) line up the filament with the notches mentioned above. (See Fig. 399.) Sight through the two sighting holes (M-6) and raise the lamp by screwing up the center contact (N-4) from the bottom with the center contact key (0) until the bottom of the filament coils (R-2) is flush with the lower edges of the sighting holes (M-6). Fig. 403 Light Beam in Motion Picture Projection Using Prismatic Condenser and No. 2 Objective Lens Then as conditions demand tighten or loosen the knurled lateral adjusting screw (M-l) until the two line-up pins (M-7) in the sighting holes (M-6) come exactly between the two center coils of the filament. If the lamp filaments are not now vertical they may be made so by screwing or unscrewing the