TitleLehmer - Bicycle Chain Sieve
Dimensionsoverall: 10 in x 8 in
DescriptionB&W image of D.H. Lehmer's Bicycle chain sieve. The chains are on an axle which is supported by a "sawbuck" of 2x2's. The driver motor is on a shelf below the chains. It is standing in a courtyard in front of a wall with building roofs in the background. Verso: "Old Machine in Courtyard"
CreditCourtesy of Gwen Bell
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