Scientific American, Vol. 12, No. 17 (April 1865)
An issue of the weekly American trade and patent journal Scientific American, published in New York in April 1865 for inventors, machinists and manufacturers who filed and followed patent claims. The wood engravings show patented machines in three-quarter view and section — roller frames on trestle legs, spring and gear details, a beer-tap pump piped to a barrel — with fine hatched shading and Fig. numbers for reuse as isolated machine vignettes.
