Motion picture projection : an elementary text book (1928)

Page scan 000572 from Motion picture projection : an elementary text book

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 #:
000572
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
Date Added:
May 08, 2025
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566 MOTION PICTURE PROJECTION are located, while several important parts relating to the film trap door E-4, P.5, are also connected with this main unit. There is really very little occasion for the removal of this entire film trap, but should such occasion arise it must be kept very firmly in mind that the lining-up process as described in paragraph 32 is of great importance, inasmuch as imperfect alignment will result in an in-and-outof -focus effect upon the screen which can only be remedied through the proper adherence to the prescribed directions. To remove: — First remove film trap door as indicated in beginning of these instructions, then remove screws and cover C-151-D, P. 6, also the two screws that hold top of film trap, which fastens through roller holder C-8, P. 6. Now disconnect the fire shutter lift-link by removing lifting stud S-514-C, P.3. Also unlatch and throw back right back cover D-9, P. 6. REPLACING FILM TRAP UNIT COMPLETE Then remove both film trap screws S-133-C, P.4, and lift the entire film trap out of its position by pulling it to the right in order to avoid bending the lift-link arm in its confining slot. With the film trap removed, it is now an easy matter to remove or replace any of the separate units that go to making up the complete film trap. Before replacing the film trap complete, it will be well to consider the purposes for which this important unit has been designed. A close examination of the inside or surface side of the film