Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 532
which are shown in their true relative positions. The crank is upon the centre, and the piston,consequently, at the end of the bottom stroke; the eccentric and valve being put in advance of thepiston by the lap, have shut off the steam before the end of the stroke, and have also opened the… … In Fig. 1454 we have a different kind of valve geering, there being levers, which reverse the directionof the motion; that is, while the eccentric-rod and lever are moving in one direction, the valve-rod andlever, being on the opposite side of the weigh-bar shaft, are moving in the opposite…
Mechanical engineering
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