Mechanical laboratory methods; a testing of instruments and machines in the mechanical engineering laboratory and in practice (1918)
Smallwood, Julian Chase · New York, D. Van Nostrand company · leaf 85
nt of the spring? Arts., 0.5 and 2.0 lbs. per in. 12. The Testing of Link Type Reducing Motions Principles. The pantagraph in various forms has been muchused to reduce engine cross-head motion for the purpose of drivingindicators. Fig. 41 shows a number of them, diagrammatically.In these and in the… … Fig. 41.—Pantagraph Reducing Motions. There are two conditions necessary to the proportionaUty ofmotion of the points R and C. First, they must lie on a straightline passing through F, and second, the links that are parallelin one position must remain so in all positions. Fig. 41 A and B are…
Mechanical engineering laboratories
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