Grain Measure


Patent model for James H. Maggard, “Automatic Grain Measure,” U.S. Patent 423,876 (March 18, 1890). James H. Maggard (1854-1924) was a businessman in Iowa City, Iowa, who has been called “the Mark Twain of writers on engineering.”

Date Made: 1890

Patented By: Maggard, James H.Maker: Maggard, James H.

Location: Currently not on view

See more items in: Medicine and Science: Chemistry


Exhibition Location:

Data Source: National Museum of American History

Id Number: CH.308978Accession Number: 89797Catalog Number: 308978Patent Number: 423876

Object Name: Grain Measure


Record Id: nmah_1692

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