Irrigation Tractor

Refrigerating Irrigator

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Courtesy of U.S. Patent Office

Year: 1918

Model: Refrigerating Irrigator

Type: Self propelled tractor

Typical use: Agriculture

This machine made projectiles of ice and shot them into the soil. As far as we know, none were ever made and the patent is the only information that we have.
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Patent description
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Nelson Irrigation

www.nelsonirrigation.com