Modern photography in theory and practice : a hand book for the amateur (1899)
Abbott, Henry G., 1858-1905 · Chicago : Geo. K. Hazlitt · leaf 31
IN THEORY AND PRACTICE. I9 dots and rest upon metal slides. The front holder has it wires between the teeth of the notched arm. After making an exposure, the lever is moved one number, … Fig. 7. which lowers the arm and holder and allows the holder to pass the strip at the top which holds it in position. The holder then falls to the bottom, as indicated by the dotted lines. After exposure the plates are released by reversing the lever, which raises them again into an up- right…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
