Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 298
1175. WATCH REGULATOR.—The outer end of the balance spring is fixed to a stud atR, and the inner end to the balance wheelarbor. The index hand carries two curb pinsat P, between which the spring vibrates, form-ing a neutral point in its length which limitsthe arc of movement of the balance wheel,… … 1176. ANTIQUE WATCH ESCAPE-MENT.—A pinion on the balance-wheel arbormeshes in a crown gear, on the shaft of whicha mutilated screw of large pitch releases theteeth of the escapement and gives an impulseby the incline of the screw. 19 •90 HOROLOGICAL.
Mechanical movements
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