Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 834
WATCHMAKING. 823 … piece will gain when the Bpring is shortened, and will 1 >-•■ when its length is increased. It is byslightl; all » the length of this spring that a til letted, so as to ■. than bi The contrivance by which the pendulum or the balance U con;! 3~4J. with the moving power, is termed the escapement.…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
