C, Fig. 85, is the theoret-ically correct position for the pallet center for a tangential locking. We will now take up the consideration of a club-tooth leverescapement with circular pallets and tangential lockings ; but pre-vious to making the drawings we must decide several points, amongwhich are… … Fig. 87 faces of the teeth. We will, for the present, accept the thicknessof the arms as being equivalent to five degrees of angular extent ofthe pitch circle of the escape wheel. In making our drawings we commence, as on former occasions,by establishing the center of our escape wheel at A, Fig.…
Clocks and watches
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