Playtner, H. R. [from old catalog] · Chicago, Hazlitt & Walker · leaf 16
15 teeth di-vide evenly into 3600 leaving an interval of 240 from toothto tooth, which is also the angle at which the locking facesof the teeth are inclined from the center, which fact willbe found convenient when we come to cut our wheel. THE LEVER ESCAPEMENT. From locking to locking on the pallet… … Fig. 1. case of a 16 tooth wheel scaping over three teeth, the anglewould be «fj« =56/4°. Pallets may be divided into two kinds, namely: equidistantand circular. ^.The equidistant pallet is so-called because thelockings are an equal distafice from the center; sometimesit is also called the…
Clocks and watches
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