Patent Model - Improvement in Mash-Rakes

Maker and role
Alexander Guthrie, Patentee
Production date
Jul 24 1877
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Object detail

Brass, painted steel
9 3/4 x 12 x 9" (24.8 x 30.5 x 22.9cm)
Guthrie states that “the nature of my invention consists in the construction of a mash-rake whereby either steam or cold air can be conducted through the rake while it is in motion stirring the mash in the tub…” Cold or hot water can be forced through the same channels as the steam for the purpose of cleaning the rake’s teeth. (Patent Number 193,507)
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