Triplex

with unknown lens image by John Bosko (Image rights)

The Triplex 2-leaf shutter was patented in 1886. It was made by Prosch in New York. It had a facility to adjust spring tension to achieve 3 different shutter speeds for its instant mode. It had a dial to set the aperture with 4 aperture holes in different sizes. It had a piston to attach a flexible tube for remote operation with rubber bulb.

Triplex Shutter, Nov.1886 image by Luis Cozeto (Image rights)

Triplex Shutter image by Luis Cozeto (Image rights)

Triple Victo w/ Triples shutter image by Luis Cozeto (Image rights)