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Watch and clock escapements; (1904)

Philadelphia, The Keystone · leaf 170

An illustration from Watch and clock escapements;, 1904, leaf 170
Fig. 168 Fig. 169 after this manner leads to the conclusion that with these long leversof the anchor the friction will be considerably increased and therecoil faces will, as a consequence, be quickly worn away. Withoutdoubt, this was invented to permit of opening and closing the con-tact points of…

Clocks and watches

Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.

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