Bromide paper : instructions for contact printing and enlarging (1896)
Just, E. A · Bradford : P. Lund, Humphries · leaf 41
y air tight all round. The light falls as shown in the sketch, if the flap K be open, upon the horizontal mirror S, which reflecfts it upon the emulsion paper through the negative lying upon a stout piece of plate glass. The mirror S can be raised by screws from the outside when the light falls… … Fig. II. is opened and the sensitive paper changed. The inside flap is then closed and pressed down. The circular lever H is then pressed down, which opens the outside flap during the exposure. The lever H is then released and the flap falls down of its own weight. Instead of a flap opening…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
