Patent 457
Patent Summary
An image of the patent summary for number 457.
Name/Title
Patent 457Entry/Object ID
2025.3.123Tags
1800s, british, patent summary, shears, hallas, flower, pearsonDescription
457. Hallas, C. G., Flower, F. W., and Pearson, E. Feb. 5. Drawings to Specification. Shears. -- Strips of metal, preferably of steel, are converted into a continuous series of shear blanks, by passing them through cast-iron chilled rolls. Recesses, which form the counterpart of one-half of each shear blank, are formed in each roller; or the recesses may be formed entirely in one roll, the other roll being plain. The invention is described in connection with shears having a spring bow and used for cutting the wool or hair of animals, but pivoted shears may, it is stated, be produced in the same way, and "trowel-shank shears" are mentioned. Abridged also in Class Metals, Cutting &c.Cataloged By
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Patent Summaries