See Saw Shutter
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) |
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| 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
