The book Illustrated Catalogue No 3 was written by author Philadelphia Riehl Bros Testing Machine Co Here you can read free online of Illustrated Catalogue No 3 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Illustrated Catalogue No 3 a good or bad book?
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TITUS, Providence, R. I. , HAGEN & DALY, Long Island City, COPLAY CEMENT Co. , Coplay, Pa. , C. F. McMuRRAY, Troy, N. Y. , i 10 i 20 i 10 i 10 i 20 i 10 i 10 I 10 'I 10 I 10 I 10 I 10 I 10 PLEASE SEE WHAT THOSE WHO ARE USING THE ROBIE PATENT SCREW JACKS SAY ABOUT THEM. EXTRACTS FROM LETTERS AZD REPORTS. New York Navy Yard, December 29, 1886. In obedience to the order of Commander H. B. Robeson, U. S. N. , we have carefully tested the Patent Screw Jack of Henry W. Robie, and respectfully report ...: The advantages of this jack over the ordinary screw jack are : First. In overcoming the sliding friction of the screw underneath the cap by means of the baHs, thereby adding greatly to the power. This friction amounts to 33 per cent, of the power exerted. Second. The movement of the screw is vertical, as in a hydraulic jack, and not revolving. Third. The distance from the base to power exerted remains the same at all times, requiring less space for operating. Fourth. The power, when exerted on the nut by means of the ratchet, can be used to the greatest advantage in confined spaces, and in positions where an ordinary screw jack could not be used.
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