Practical cinematography and its applications (1913)

Record Details:

Title:
Practical cinematography and its applications
Date:
1913
Publisher:
Philadelphia, Lippincott
Volume:
Practical cinematography and its applications
Leaf #:
000267
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
Something wrong or inaccurate about this page? Let us Know!

Thanks for helping us continually improve the quality of the Lantern search engine for all of our users! We have millions of scanned pages, so user reports are incredibly helpful for us to identify places where we can improve and update the metadata.

Please describe the issue below, and click "Submit" to send your comments to our team! If you'd prefer, you can also send us an email to mhdl@commarts.wisc.edu with your comments.




We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.

Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.

204 PRACTICAL CINEMATOGRAPHY brilliantly lighted. As the paper remains stationary while the projector is running, it follows that a shot must penetrate the three thicknesses of paper, and the puncture is shown by the light from behind coming through the shot-hole. Thus the marksman can see where his shot has struck. When the projecting mechanism has been stopped, and the result has been read, the shot- hole has to be obliterated before the film is able to resume its forward movement. This is accomplished automatically as follows: The relay, while declutching the drive and applying the brake, also sets in motion a plunger in a dash-pot. The time of the vertical travel of this plunger is varied, but the mechanism remains stationary, and the shot-hole visible, during its movement. When it has reached the limit of its travel it establishes contacts which serve to set the screen mechanism in motion. On the lower horizontal roller carrying the supply of paper is a ratchet and pawl movement, actuated by a solenoid. When the plunger connected with the relay closes the screen mechanism circuit, the ratchet is moved, and the outer sheet of paper moves upward one-eighth of an inch, while its return forming the second sheet moves simultaneously and correspondingly downwards. The displacement of these two vertically moving