, recess and collet, the recess being theportion of the escape wheel sunk, to enable us to get wide teethactions on the impulse pallet. The collet is a brass bush on whichthe wheel is set to afford better support to the escape wheel thancould be obtained by the thinned wheel if driven directly on… … 136 Watch and Clock Escapements. one-half that of the escape wheel. This impulse roller is stakeddirectly on the balance staff, and its perfection of position assuredby resting against the foot of the shoulder to which the balance issecured. This will be understood by inspecting Fig. 137, which isa…
Clocks and watches
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