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... FOR WATCHES. SPECIFICATION forming part of Letters Patent No. 227,726, dated May 18, 1880. Application filed... for The collet will be connected by inserting its Watches, of which the followingisaspecifica- shouldered portion...- Heretofore balance-staffs for watches have sunk end, so that the collet will be rigidly been made inl..., in enlarged size. Patent- Fig. 2 is a cross-section of the wheel with the 1. A balance-staff for watches... letters of reference indicate corre- 2. A balance-wheel for watches having the 80 spending parts