. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Fig. 10.—Regulator. WATCHES AND CLOCKS. 889. Waterbury short wind watch. the independent bridge, the tempered hairspring, back ratchet, etc., as well as the windingparts. The wind is simple, being composed of only five pieces. Both the pillar and topplates are made double, which arrangement holds the winding work and jewels in position,and takes the place of the ordinarybridges, screws, etc. Kecext Improvements in W
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Fig. 10.—Regulator. WATCHES AND CLOCKS. 889. Waterbury short wind watch. the independent bridge, the tempered hairspring, back ratchet, etc., as well as the windingparts. The wind is simple, being composed of only five pieces. Both the pillar and topplates are made double, which arrangement holds the winding work and jewels in position,and takes the place of the ordinarybridges, screws, etc. Kecext Improvements in Watch-MAKiXG.—The Waltham Watch Co. in-troduced a novel improvement in themovements of their make a few years ago,which has helped to offset any damagedone to the train following the Vireakingof the mainspring. The center pinion isremovably fixed to the center stafE ; thepinion has its axial hole screw-threadedto correspond with a similar thread uponthe staff, the direction of thi-ead beingsuch that the strahi of the mainspring,acting through the teeth of the barrelupon the pinion, will force it against ashoulder formed for the purpose on thestaff, making it practically a single piece ;but should the mainspring break
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
