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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 313

An illustration from Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts, 1880, leaf 313 — 2S31. … shown in the cut, there is a cam by means of which the bolt of the lock is moved. The unlockingof the cylinder is performed by simply thrusting the key into it, and of the bolt by turning the cylin-der with the key. Flat keys are now largely used in standard door-locks. An example of a lock of this…

Mechanical engineering -- Dictionaries

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