Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 907
- or steam-power may be used for thepurpose. The change from one to the othermay be made instantaneously, by means of thehand-lever shown at the right of the main column of the machine in Fig. 4125. This lever operatesthrough a set of friction-cams, and causes the screw to run upward or downward at… … TESTING MACHINES. 873 registers up to 1,000 lbs., and the upper from 1,000 to 10,000. A suspender-rod at the left carriesthe weights, which are of 10,000 lbs. each. The coincidence of the line of strain with the centralline of the specimen is accomplished by making the weighing head, which…
Mechanical engineering -- Dictionaries
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