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Irving Henry Cowdrey with Emery Testing Machine

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Description

Irving Henry Cowdrey (on left) operates the controls for a large machine that takes up most of the frame. An embossed label on the machine reads, "William Sellers & Co. Incp. 300000 lb. Testing Machine. Emery Patents [three numbers, illegible] Philadelphia No. 4." Original caption: "Emery Testing Machine, Professor Cowdrey at controls". Used in: Technology Review. Original credit line: George H. Davis, Jr.