File:Transactions of the Society of Motion Picture Engineers (1921) (1921) (14598390828).jpg

Identifier: transactionsofso12soci_0 (find matches)
Title: Transactions of the Society of Motion Picture Engineers (1921)
Year: 1921 (1920s)
Authors: Society of Motion Picture Engineers
Subjects: motion pictures
Publisher: Society of Motion Picture Engineers
Contributing Library: Library of Congress, MBRS, Moving Image Section
Digitizing Sponsor: Library of Congress, Motion Picture, Broadcasting and Recorded Sound Division

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nging experiments, and in a fewweeks had secured excellent snap shots with an ordinary camera,of fish swimming along the bottom of Hampton Roads. Using these photographs as an argument they formed a corpora-tion in which several of the most prominent business men of Norfolkare stockholders. These men saw the way to put before the outsideworld views of that portion of its surface that man had never beforeseen, and realized the wonderful scientific and educational value ofa photographic record of the oceans bottom. Although conservative bankers, business and professional menwho would not be ordinarily impressed by such an unheard of idea,they were so convinced by these photographs of the ultimate successof the idea, that they gave freely of their time and means to financeand outfit the expedition. How well justified their foresight was is shown by 20,000 ft.of marvelous film taken beneath the ocean in the West Indies. It is a fitting coincidence that the first successful motion pic- 152
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How submarine movies are made. tures ever taken beneath the ocean were made at a spot only a fewmiles from the place where Columbuss ships first dropped anchorin the New World. The Williamson boys designed a special chamber for the photo-graphic work and also drew the plans for a vessel from which tolower the tube and chamber. This chamber is a hollow sphere ofsteel with an inside diameter of five feet. From its center a coneof steel five feet long and five feet in diameter at the large endprojects horizontally. This cone penetrates the sphere and at itssmall end, where it is eighteen inches in diameter, a steel bulkheadis fitted. In this bulkhead there are two glass ports, three inches indiameter, and placed one above the other with about five inchesbetween them. They are the eyes for the photographer and thecamera. The large end of the cone is closed by a piece of plateglass an inch and one half thick and five feet in diameter. It wasmanufactured in Germany especially for the purpos

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