Journal of the Franklin Institute; devoted to science and the mechanic arts (1826)
Franklin Institute (Philadelphia, Pa.) · Oxford, Eng. [etc.] Pergamon Press [etc.] · leaf 251
rily be governed by the natureof the work which they have to perform. 244 Davis Improvement in Ploughs. What I claim as my invention is the use of the rims, or fillets, andthe corresponding grooves by which the metal is confined laterally,and the eye, the oval, and other parts, are made to assume… … A A, rollers. B B, grooves. C C, projecting rims in the other. Abstract of the specification of a patent for improvements in the Bar-share or Fallow Plough. First patented October 1, 1825, which pa-tent was surrendered, and cancelled, on account of a defective speci-fication, and reissued to the…
Science · Patents · Meteorology · Technology
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