Metal tools and implements – making – Blank or process – Hand tool
Patent
1995-01-23
1997-12-16
Jones, David
Metal tools and implements, making
Blank or process
Hand tool
76101R, 72 53, 152354, B21D 102, B24C 110
Patent
active
056972652
ABSTRACT:
A trowel and related method of manufacture in which residual stresses are intentionally imposed upon the bottom working surface and/or the top mounting surface of a trowel blade. Stresses can be imposed, for example, by glass bead peening, shot peening, rolling, and/or brushing the metal trowel blade. Stresses are built up to a working stess level that remains substantially constant with further use of the trowel against abrasive, spreadable surfaces. Imposed stresses on the top and bottom surfaces can also be used to vary the resulting curvature of the blade.
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"Metals Handbook", 8th edition, vol. 2, Heat Treating, Cleaning, and Finishing, pp. 398-402 1964.
McComber Larry J.
Murders Jack D.
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