h e having thus accomplished its mission, will now slip by andthe tooth c will come in lock with the pallet P and, after the mannerjust described for e, continue the escapement. Usually these escapewheels are provided with teeth to the number of n, 13 or 15, andalways uneven. A great advantage… … Fig. 148 E~ZSJ OLDEST ARRANGEMENT OF A CROWN-WHEEL ESCAPEMENT.Plate 147 shows us the oldest known arrangement of a crown-wheel escapement in a clock. R is the crown wheel or balancewheel acting upon the pallets P and P, which form part of theverge V. This verge is suspen-ded as lightly as possible…
Clocks and watches
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