ESSENTIAL PARTS OF THE CYLINDER ESCAPEMENT.
The cylinder escapement is made up of two essential parts, viz.: the
escape wheel and the cylinder. The cylinder escape wheel in all modern
watches has fifteen teeth, although Saunier, in his "Modern Horology,"
delineates a twelve-tooth wheel for apparently no better reason than
because it was more easily drawn. We, in this treatise, will consider
both the theoretical action and the practical construction, but more
particularly the repair of this escapement in a thorough and complete
manner.
At starting out, we will first agree on the names of the several parts
of this escapement, and to aid us in this we will refer to the
accompanying drawings, in which Fig. 122 is a side elevation of a
cylinder complete and ready to have a balance staked on to it. Fig. 123
shows the cylinder removed from the balance collet. Figs. 124 and 125
show the upper and lower plugs removed from the cylinder. Fig. 126 is a
horizontal section of Fig.
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