ScientificAmerican1875-05-01.jpg Scientific American 1875-04-24ThumbnailsScientific American 1875-05-08Scientific American 1875-04-24ThumbnailsScientific American 1875-05-08Scientific American 1875-04-24ThumbnailsScientific American 1875-05-08Scientific American 1875-04-24ThumbnailsScientific American 1875-05-08Scientific American 1875-04-24ThumbnailsScientific American 1875-05-08

Evart's rotary shingle machine; also, Evart's hand feed shingle machine, and Low's shingle and barrel head sawing machine.