Stirling_ Engines (7)

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Ritter Dental MFG, Automatic Air Compressor

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Automatic Air Compressor, 1917, Ritter Dental Mfg. Co.,Inc
Pat Nov. 7, 1916, Mar.27, 1917
British Pat 16180 of 1914

36" high, 14 inch diameter, 8" pulley,
it is very quiet and looks nice. I use it drive small steam engines at indoor parties and such.