Compressed air . 7=^ 321,917. PNEUMATIC ACTION FOR PIANOS. Alfred .\xderson, Chicago, 111. Filed Aug. 24, 1904. Serial No. 221,,926. .MR-COMPRESSOR. Harry B. Cornish, Minneapolis, Minn., assignor of two-thirds to P. Peterson, Glenwood, Minn. Filed Feb. 2, 1905. Serial No. 243, Claim.—The combination, with a casing having in-take and exhaust ports arranged one above anotherand intake and exhaust valves, said intake-valve beingnormally open and said exhaust-valve closed, and saidvalves having a rod or stem, of a diaphragm withinsaid casing above said valves and having an openingto re
Compressed air . 7=^ 321,917. PNEUMATIC ACTION FOR PIANOS. Alfred .\xderson, Chicago, 111. Filed Aug. 24, 1904. Serial No. 221,,926. .MR-COMPRESSOR. Harry B. Cornish, Minneapolis, Minn., assignor of two-thirds to P. Peterson, Glenwood, Minn. Filed Feb. 2, 1905. Serial No. 243, Claim.—The combination, with a casing having in-take and exhaust ports arranged one above anotherand intake and exhaust valves, said intake-valve beingnormally open and said exhaust-valve closed, and saidvalves having a rod or stem, of a diaphragm withinsaid casing above said valves and having an openingto receive said rod, means interposed between saiddiaphragm and the upper free end of said rod forraising said rod to close said intake-valve and openthe exhaust, and a spring put under tension by theinitial movement of said diaphragm to aid in seatingsaid intake-valve, substantially as ,960. PNEUMATIC-MOTOR W. Parsons, Tarrytown, N. Y, FiledJan. 7, 1905. Serial No. 240,013.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectcompres, bookyear1896
