A hacksaw is a fine-toothed saw originally, and still mainly, built for cutting metal; the equivalent saw for wood is usually called a bow saw. Most hacksaws are hand saws with a C-shaped frame holding a disposable blade under tension, fitted with a pistol-grip handle and, often, an adjustable frame to fit blades of different sizes, with a screw or similar mechanism used to tension the blade.
Facts
Introduced When (Circa)Significant design improvements made in the 1880s; patented 1898 1 OriginGeorge N. Clemson, a founder of Clemson Bros. Inc of Middletown, New York, tested changes to blade tooth shape, set and heat treatment, and was granted US Patent 601947 in 1898 detailing various hacksaw improvements. 1 Introduced era (class) In the Other Atlases
Sources
1. Hacksaw (Wikipedia)
Wikimedia FoundationHistory section, 1880s improvements sentence
significant improvements in longevity and efficiency were made in the 1880s by Max Flower-Nash
History section, 1898 patent sentence
In 1898, Clemson was granted US Patent 601947, which details various improvements in the hacksaw.
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