Scientific American, Vol. 5, No. 41 (1850)
Scientific American, volume 5, number 41, a weekly American periodical of 1850 that reported new mechanical inventions for a general readership of inventors and mechanics. The page shows a cross-section engraving of a patented apparatus with a tall spouted cylinder, a crank-driven vertical shaft, and lettered parts keyed to a printed text below. Designers can take from it the precise, label-driven line style of 1850s technical engraving, with dense hatching used to render cast metal and masonry.
