hem and inorder to do this the banking pins, M, M^, for the pallet armsto rest on, should hold them just clear of the lifting pinsor leaves of the escape wheel. The escape wheel should beas light as possible, for every blow heard in the machinemeans a loss of power and wear of parts. Of course, in… … O Fig. 51. l62 THE MODERN CLOCK. this fan and if the stop of the escape wheel seems too ab-rupt, the fan should be lengthened. Figs. 50 and 51 show the same escapement with a four-legged wheel instead of the double three-legged. In thiscase, where there is but one wheel, the pallets must of…
Clocks and watches
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