File:Transactions of the Society of Motion Picture Engineers (1921) (1921) (14785033035).jpg

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English:

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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waters of the topics. Before describing the way in which the photographs were secured an outline of the apparatus used will give an insight into the mechanical features of the experiments. Several years ago Captain C. Williamson of Norfolk began working to perfect an invention that would take the place of the ordinary diving suit. It was his idea that some means should be developed by which a man could go down into the water unhampered by weights and ropes and compressed air and water pressure. His experiments extended over a long time, but finally he was successfuland the government granted him a basis patent. Broadly considered, his apparatus is in three parts; (1) floating vessel of any suitable design; (2) submersible terminal operating chaniber in which work or observations can be carried on at the bottom of the water, and (3) a collapsible, flexible tube of metal,connecting the floating vessel and the submersible chamber. The main feature of the invention is the tube. It is made of 150
Text Appearing After Image:
Diver at Work on Wreck, Coral Reef in Background. 151 steel in sections of varying lengths. Each section is composed of an upper and lower flange and these are connected by a set of steel hinges, so arranged as to open and shut along radial lines to the axis of the tube, but at all times to fit against each other so closely as tobe water-tight. Some of the sections have only one set of hinges and when collapsed the flanges rest upon each other. In the longer sections there are several sets of hinges joined to each other between the upper and lower flanges. When collapsed they stand about three feet high; they are eight feet long when extended. The sections can be fitted to each other readily, and by this means the length of the tube is regulated. Because of the collapsible nature of the sections it is possible to submerge the tube. Any one who has tried to push a large bucket bottom downwards into the water will realize what a difficult thing it is to do. With the collapsible tube each section j

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Flickr tags
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  • bookid:transactionsofso12soci_0
  • bookyear:1921
  • bookdecade:1920
  • bookcentury:1900
  • bookauthor:Society_of_Motion_Picture_Engineers
  • booksubject:motion_pictures
  • bookpublisher:Society_of_Motion_Picture_Engineers
  • bookcontributor:Library_of_Congress__MBRS__Moving_Image_Section
  • booksponsor:Library_of_Congress__Motion_Picture__Broadcasting_and_Recorded_Sound_Division
  • bookleafnumber:160
  • bookcollection:libraryofcongresspackardcampus
  • bookcollection:mediahistory
  • bookcollection:fedlink
  • bookcollection:library_of_congress
  • bookcollection:americana
Flickr posted date
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30 July 2014

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