The Vault — Invention and Engineering _□✕

Invention and Engineering

Benjamin Holt

Benjamin Holt
Benjamin Holt

Benjamin Leroy Holt (January 1, 1849 – December 5, 1920) was an American businessman and inventor who patented and manufactured the first practical crawler-type tread tractor. The continuous-type track is used for heavy agricultural and engineering vehicles to spread the weight over a large area to prevent the vehicle from sinking into soft ground. He founded with his brothers the Holt Manufacturing Company.

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Comparison of the AK-47 and M16.

Bombing of Dresden.

See also

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Text from Wikipedia; plate via Wikimedia Commons. Text CC BY-SA 4.0; plate freely licensed (see Commons). Source record. Images and catalogue data are reproduced from open-access collections.

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