Kirkman, Marshall M. (Marshall Monroe), 1842-1921 · New York and Chicago, The World railway publishing company · leaf 138
o its seats on the shell by grinding them together, butgrind each part separately, as above stated. Other types of Crosby plain and muffled pop safetyvalves are shown in the four next succeeding engrav-ings. Figs. 9 and 11, both sectional views, also showthe lever with which these valves are…
Locomotives
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