The dictionary of photography for the amateur and professional photographer (1897)
Wall, E. J. (Edward John), 1860-1928, Bolas, Thomas · London : Hazell, Watson & Viney · leaf 625
ext form a bottom out of zinc, and solder carefully on to the end farthest away from the funnel. Then proceed to make a cone-shaped lid, about 9 ins. in diameter at the top ; this can be done by forming a circle out of tin or zinc, 12 ins. in dia- meter, and cutting a piece out, 7% in. at the… … Fig. "7« Fig. 118. The lip of the cone must stand directly over the funnel. From these directions and illustrations any metal worker will make the apparatus at small cost. Stout tin will serve well. In order to use, pour about a quart of water into the cylinder, fix on the top so that no steam can…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
