Katherine L. Heinz, CA271698A
Grain Aerator.
Image credit: Heinz, K.L. (1926)
On June 21, 1927, Katherine Lorella Heinz of Champaign, Illinois, was awarded a patent for a grain aerator that used the weight of falling grain to drive a system of vibrating screens. This design loosened and aerated the grain without external power, allowing sunlight and air to circulate through it.
Date of Application: 5 November 1926
Date of Issuance: 21 June 1927
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Francesca Chiaradia
PhD Candidate in Economics
My research interests include innovation, law, and information economics.