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Wording of plaque #27
DESIGNATED A HISTORIC LANDMARK
OF
AGRICULTURAL ENGINEERING
The food canning industry was revolutionized in 1920, when the continuous
rotary pressure sterilizer was introduced by Albert R. Thompson. Thompson was
chief engineer for the Anderson-Barngrover Co. of San Jose, California, now the
FMC Corporation. The sterilizer cooked canned products uniformly under pressure
for short period at high temperatures, then quickly cooled them under pressure
to prevent swelling or bursting. It operated continuously at speeds of up to
400 cans per minute. Prior to Thompson's development, small batches of cans
were laboriously loaded into metal baskets and sealed in retorts for lengthy
periods, often with inconsistent results.
The Sterilizer, which made high quality, safe, nutritious and wholesome canned
foods available to the American public at low cost, is hereby
DEDICATED
BY THE
AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS
1992
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