See Saw Shutter

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The See Saw Shutter was a shutter made of brass, patented by Lancaster.

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The shutter was triggerable pneumatically.
image by Luis Cozeto (Image rights)
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Simplicity was the ingenousity of Lancaster's shutter patents.
The image show two variants of the See Saw Shutter and Lancaster's rotary shutter.
image by Luis Cozeto (Image rights)


17088766862_e270d3bb71.jpg
image by Luis Cozeto (Image rights)



  description: see Fig. 28 Fig. on this page from the book

  J. C. H. Wallsgrove, First Steps In Photography, New York 1913
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