A manual of home-making

When rej^ulatin^ a pendulum clock by the key device, the key should be turned overhand toward the letter **S" or **F," according as one wishes to make the clock run more slowly or faster. If there are no indicating letters (*'F'* and **S*') pro- vided, the usual rule is to turn the key in the direction the hands move to make it go faster or counterclockwise to make it run more tilo^vly. The amount of movement required to correct the rate must generally be found by trial Thus, if the clock gains five min- utes a day, and one turns the key of the regulator two revolu- tions toward ''8/' or moves the lever of an alarm clock two divisions toward '*S/' and the clock then lostvs three minutes a day, one can obtain nearly zero rate by turning the key three-fiiiarl.ers of a revolution back toward *'F'' or by mov* ing the lever three-C|uarters of a division back toward **F-** In some pendulum clocks there may l»e some motion lost in reversing the regulation, and this should l>e taken into account in estimating the amount to move the regulator. To correct the strikiiig of a dock. While some clocks of a more recent type have the hour and minute pinions and the striking mechanism so geared together that it is almost impossible for the clock to strike wrongly, this frequently happens with other types of clocks. This difficulty can be remedied easily in the latt^T case by several methods. One method, which can be used in case the hour hand is held in position on its shaft by friction only, is to move the hour hand backward or forward an hour or more vus may be neces- sarj^ to make the hour indicated by the clock-face agree with the striking mechanism, pressing the hour hand tight on its shaft aft^erwards, as described above* Then the clock should be set to correct time by moving the minute hand around the dial the necessary number of times^ allowing the clock to strike ;be| I HOUSEHOLD MEASUREMENTS AND THEIR USE 141 the full amount each time the hiiiMl passes the XII point before approaching that point again. This method is especially con- venient when the clock strikes one or two strokes less than it should. When it strikes more strokes than it shouldi the same method may be used, or tbi} minute hand may be turned ahead rapidly so that it will again pass through the XII point while the clock is still strildng for the previous hour. By so doing the striking mechanism is not reletise<l to strike the following hour, and thus an hour is gainetl in the face indica- tion of the clock compared with the striking. This may be repeated as many times as the number of strokes by which the striking meclianism was in error. The clock may then be set to correct time in the usual way, allowing it to strike the full amount on each passage of the XII jwint, or the clock may be stopped for as many hours as it is fast, until again it indi- cates the correct hour, wdien it can be started and set correct without the necessity of striking all the ninei ten, or eleven hours that may have intervened*