Scientific American, Vol. 6, No. 15 (April 1862)
A weekly American patent and invention journal, published in New York in April 1862 for mechanics, manufacturers and inventors. The wood engravings show patent drawings: sectioned mill machinery with toothed wheels, plan and elevation views of shop equipment, a cutaway battery or incubator cabinet, and folding spoon-knife-fork sets, all in fine hatched line useful for diagram and technical-detail work.
