patent hammer

patent hammer
a hammer for dressing stone, having a head with two faces formed of a number of broad, thin chisels bolted side by side.
[1895-1900]

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Universalium. 2010.

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  • patent hammer — noun or patent ax : bushhammer * * * a hammer for dressing stone, having a head with two faces formed of a number of broad, thin chisels bolted side by side. [1895 1900] …   Useful english dictionary

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