Scientific American, Vol. 12, No. 26 (June 1865)
An issue of the weekly New York periodical Scientific American from June 1865, reporting new patents and machinery for inventors, manufacturers and mechanics. The wood engravings are small technical diagrams — sectioned screw conveyors, brush and auger heads, flexible shafts, clamps and gearing — shown in cutaway with hatched shading and letter keys, useful as compact mechanical motifs, texture, or line-art spot illustration.
