The American watchmaker and jeweler; an encyclopedia for the horologist, jeweler, gold and silversmith .. . t consisted of an oblong frame of wood, A B C D,to the upper part of which two cords A a, /> b, are fixed at their superiorextremities and at their inferior are wound around the axis of the drumE. This drum was divided into several water-tight compartments, as 93 Clerkenwell. sho^Yn in Fig. 89. The cord was wound around the axis until the drum?was elevated to the top of the frame and it was then left to obey the forceof gravity. A hole was pierced near the bottom of each compart-ment,
The American watchmaker and jeweler; an encyclopedia for the horologist, jeweler, gold and silversmith .. . t consisted of an oblong frame of wood, A B C D,to the upper part of which two cords A a, /> b, are fixed at their superiorextremities and at their inferior are wound around the axis of the drumE. This drum was divided into several water-tight compartments, as 93 Clerkenwell. sho^Yn in Fig. 89. The cord was wound around the axis until the drum?was elevated to the top of the frame and it was then left to obey the forceof gravity. A hole was pierced near the bottom of each compart-ment, allowing the water to slowly ooze fromone compartment to the other, thus causingthe drum to revolve with a certain degree ofaccuracy. The rate of motion was regulatedby altering the size of the apertures. Thehours were indicated in two ways; one by theaxis pointing out the hours on the side of theframe as it revolved, and another by passinga cord, c r/, over a pulley attached to an arbor,having an index or hand to point out thehours on a dial, a weight, F. being fastened tothe other end of the CLERKENWELL. One of the great watch and clock centers ofEngland. It is one of the parishes of London, and within its limitsevery branch of the watch trade is carried on. CLICHE. The forming of metal objects by means of forcing a dieinto heated metal. CLICK. A pawl or dog which falls into a ratchet wheel and pre-vents it from turning backward, and is usually held in position by meansof a spring, known as the click spring. A ratchet wheel with click isfixed to the barrel arbor of watches and clocks to maintain the main-spring after being wound. Click Spring. The spring which holds the click in position on aratchet wheels tooth. To Mount a Click Spring. When the old click spring has beentaken down from the bridge, find a new one, which, in length from clickto foot, into which the holes are drilled for fastening, is suited to theshape and length of the bridge. With three claws fasten
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Keywords: ., bookcentury1800, bookdecade1890, bookidamericanwatc, bookyear1892
