Experimental engineering and manual for testing. For engineers and for students in engineering laboratories (1906)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & Sons; [etc., etc.] · leaf 120
-lever machine in which the lever is of the secondorder is shown in Fig. 34. The specimen is placed betweenthe fulcrum and the weigh-ing mechanism. The latterconsists of a hydraulic cy-linder with diaphragm andattached gauge, and is in-teresting as being the proto-type of the Emery testing-machine.… … Fig. 35.—Riehle:. distances from the fulcrum. A machine of this form wasmanufactured at one time by Riehle Brothers.* Third, compound-lever machines. These have been muchused in America for the last twenty years, and are manufacturedby Riehle Brothers, Olsen, and Fairbanks. In these machinespower…
Building materials · Machinery
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