Scientific American, Vol. 63, No. 9 (August 1890)
An August 1890 issue of Scientific American, the weekly technology and patent journal published by Munn & Co. in New York for inventors, engineers, and general readers. Wood-engraved figures show patented hardware in numbered part-by-part breakdowns beside a full assembled view, plus captioned factory interiors with workers at benches, giving designers labelled mechanical diagrams, gear and linkage detail, and small industrial scenes.
