. Watch and clock escapements; . grees of forkaction, four and a half degrees relate to the impulse face of theteeth, one and a half degrees to lock, and four degrees to thedriving plane of the pallets. In delineating such a club-tooth escapement, we commence, asin former examples, by first assuming the center of the escape wheel The Detached Lever Escapement. 3i at A, and with the dividers set at five inches sweeping the arc a A we draw the vertical line A B. On the arc a a, andeach side of its intersection with the line A B, we lay off thirtydegrees, as in former drawings, and thro
. Watch and clock escapements; . grees of forkaction, four and a half degrees relate to the impulse face of theteeth, one and a half degrees to lock, and four degrees to thedriving plane of the pallets. In delineating such a club-tooth escapement, we commence, asin former examples, by first assuming the center of the escape wheel The Detached Lever Escapement. 3i at A, and with the dividers set at five inches sweeping the arc a A we draw the vertical line A B. On the arc a a, andeach side of its intersection with the line A B, we lay off thirtydegrees, as in former drawings, and through the points so establishedon the arc a a we draw the radial lines A b and A c. From theintersection of the radial line A b with the arc a we draw the lineh h at right angles to A b. Where the line h intersects the radiallines A B is located the center of the pallet staff, as shown at as we decided to let the pallet utilize five degrees ofescape-wheel action, we take a space of two and a half degrees in •>\. the dividers, and on the arc a a lay off the said two and a halfdegrees to the left of this intersection, and through the point soestablished draw the radial line A g. From 5asa center we sweepthe arc d d so it passes through the point of intersection of the arc awith the line A g. We again lay off two and a half degrees from the intersectionof the line A b with the arc a, but this time to the right of saidintersection, and through the point so established, and from B as acenter, we sweep the arc e. From the intersection of the radialline A g with the arc a we lay off to the left five and a half degreeson said arc, and through the point so established draw the radialline A f. With the dividers set at five inches we sweep the shortarc m from B as a. center. From the intersection of the line h B h 2,2 Watch and Clock Escapements. with the arc m we lay off on said arc and above the line h four anda half degrees, and through the point so established draw t
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Keywords: ., bookcentury1900, bookdecade1900, bookidwatchclockes, bookyear1904
