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 840
iking-train is prevented from acting. The amount of motion given to the rack is determined bythe place of the snail. In the position represented in the figure, the pin h would be stopped by thesecond step; and thus the rack would only be permitted to move to the amount of two of its teeth.If the… … 834 WATCHMAKIXG. the left to the amount of twelve teeth. This preparatory action is usually made to take place about 3or 5 minutes before the expiration of the hour, and it is called giving warning. The machinery remains in tliis position until the minute-hand points to XII., at -which time the…
Mechanical engineering · Mechanics · Engineering
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