The American watchmaker and jeweler; an encyclopedia for the horologist, jeweler, gold and silversmith .. . Fig. U2*. 97 Clocks. longest day, as well as the longest night, has sixteen hours. It is sup-posed that the nails were used by the watchman in determining the hourwithout the use of a light, and that he first sought the nail with the point,then felt downwards, counting the others, until he arived at the nailabove which the hand rested. When the day was divided into twicetwelve hours, about 1560-1580, the old hour wheel was removed and /~\.. Fig. by a new one, and the dial was
The American watchmaker and jeweler; an encyclopedia for the horologist, jeweler, gold and silversmith .. . Fig. U2*. 97 Clocks. longest day, as well as the longest night, has sixteen hours. It is sup-posed that the nails were used by the watchman in determining the hourwithout the use of a light, and that he first sought the nail with the point,then felt downwards, counting the others, until he arived at the nailabove which the hand rested. When the day was divided into twicetwelve hours, about 1560-1580, the old hour wheel was removed and /~\.. Fig. by a new one, and the dial was repainted to correspond. Theclock has no striking work proper, but as shown in Fig. 93, is providedwith a kind of alarm, which after each hour, rattles the hammer to andfro on a bell, to call the attention of the watchman. The motion workconsists of a barrel wheel with ninety-six teeth; a vertical wheel withthirty-five teeth, and a five-leaf pinion. The barrel wheel has a four-leaf pinion, seizing into forty-eight teeth of the hour wheel. In theformer division of sixteen hours the hour wheel had sixtv-four teeth. Clocks. 98 The verge is suspended by a cord, and in lieu of a balance, is providedwith a horizental toothed bar, on the ends of which hang two smallweights, for regulating purposes. The winding part is peculiar, because,while the cord with the heavy weight descends, another cord with asmall weight winds up in an opposite direction, and it is only necessaryto draw down the small weight in order to wind up the heavier. A pin a is
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Keywords: ., bookcentury1800, bookdecade1890, bookidamericanwatc, bookyear1892
