Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 836
impulse is communicated at each vibration. In all the improvedescapements, the balance is so detached from the train of wheels, that it only receives a momentaryimpulse from the moving power; and in the intervals, the whole train of wheels is cliecked. In generalthis impulse is communicated only at… … One of the contrivances by which these objects are fulfilled, is that known as the duplex escape-nent, so named from the escapement-wheel having two sets of teeth on its rim; the action of whichwill be easily comprehended by reference to Figs. 3755 and 3756. A A represents the scape-wheel,which is…
Mechanical engineering · Mechanics · Engineering
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