The steam engine and turbine; a text-book for engineering colleges (1911)
Heck, Robert Culbertson Hays, 1870- · New York, D. Van Nostrand company · leaf 404
Fig. 249. — Outline of Walschaert Gear. sufficient illustration. Motion taken from the crosshead at J is re-duced and reversed by the lever KHL, taking H as the fulcrum: thisgives the effect of a short arm opposite to the crank, like OEo in Fig.248. The pin E, carried on a return crank from the… … Fig. 250. — The Joy Valve Gear, as for a locomotive; at A, enlarged section of curved guide 5. and having OE as its radius arm, drives the oscillating link 3: theresulting movement, communicated through block 4 and rod 5 to thepin H, is made variable by shifting the block in and out from the fixed…
Steam-engines · Steam-turbines
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