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 835
y afliect its regularity. In order to effect this, ViUious kinds of escape-ments have been devised. The vertical escapement is the oldest escapement of all, which, after having first been adopted icjocks, was applied in the construction of watches. Its nature is explained by l^ig. 3754, (a… … WATCHMAKING. 82J evidently from its resemblance to a crown: this same wheel, when employed in the watch, (supposingthe latter to be placed on its face or back,) obviously revolves vertically to the ])iane of tiie horizon \hence, watches made witli this escapement are termed vertical Watclies are…
Mechanical engineering · Mechanics · Engineering
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