. Time and its measurement . note that clocks in the earl_\- days weregenerally built in the form of a church 44 TIME AND ITS MEASUREMENT tower with the l)ell under the dome out ir>On, had. this clock had access to some oldchurch clock—a wonderful machine inthose days—and that he la])oriouslycopied it. It strikes the hours, only, bythe old count wheel or lockingplate method. Between this and ourmodern clocks appeared a type show-ing; quarter hours on a small dial underthe hour dial. No doubt this was atthat time a threat advance and lookedlike cutting time up pretty fine. As thehand on the
. Time and its measurement . note that clocks in the earl_\- days weregenerally built in the form of a church 44 TIME AND ITS MEASUREMENT tower with the l)ell under the dome out ir>On, had. this clock had access to some oldchurch clock—a wonderful machine inthose days—and that he la])oriouslycopied it. It strikes the hours, only, bythe old count wheel or lockingplate method. Between this and ourmodern clocks appeared a type show-ing; quarter hours on a small dial underthe hour dial. No doubt this was atthat time a threat advance and lookedlike cutting time up pretty fine. As thehand on the quarter dial made the cir-cuit in an hour the next step was easy,by simply dividing the circle of quar-ters into sixty minutes. The old fel-lows who thought in hours must have the folint and verge escajiement, and insome early attempts to govern thefoliot a hogs bristle was used as aspring. r>3 ]jutting a ring around theends of the foliot and adding the hairspring of Dr. Hooke, about 1640, wehave the verge watches of our grand-fathers. This balance wheel and hairspring stand today, but the lever es-capement has taken the place of theverge. It is a modification of the deadbeat, F
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Keywords: ., boo, bookcentury1900, bookdecade1900, booksubjectclocksandwatches
