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) |