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 312
single pin called a stump in the bolt, which passes into slots in the tumblers, and these have tobe raised to various heights in order to receive it. Chubbs lock has this form, as in Fig. 2821, whereb is the bolt, t the tumblers (six in this cut), turning on the common pin a, d six springs to…
Mechanical engineering -- Dictionaries
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