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ILLUSTRATED WITH HALF-TONES AND
DRAWINGS BY THE AUTHOR.
CHICAGO:
GEO. K. HAZLITT & CO.
1896.
Copyrighted 1896, by W. T. Lewis.
Copyrighted 1896, by Geo. K. Hazlitt & Co.
Page.
Introduction, 7
CHAPTER I.
Lubricants in Horology—their Source and Methods of Refinement, 9
CHAPTER II.
Elementary Physics Relating to Friction and Lubrication, 21
CHAPTER III.
Friction—its Nature and Theory, 29
CHAPTER IV.
Application of the Laws of Friction and Lubrication in
Horology, 43
CHAPTER V.
The Properties and Relative Values of Lubricants in Horology, 61
Many books have been written on the various escapements, describingtheir action, construction and proportion, and the laws governing thesame; learned writers have contributed much valuable information onadjusting; excellent attachments for the various lathes have beeninvented; and factories have expended fortunes to produce machinery ofwonderful construction to finish all the parts of a watch in the mostapproved manner; but all this scientific research, all this painstakingeffort, all this care and labor, are rendered abortive by the maker orrepairer of a time piece if he does not thoroughly understand and applythe physical laws which govern the science of lubrication.
Many a watch, or chronometer, most excellent in all other respects, hascome to an untimely end by an almost criminal neglect on the part of itsmaker to provide against wear in its various parts by such constructionas would retain the oil at the places needed.
How often the repairer—clean he his work as well as he may—replace hethe broken or worn part to put the time piece in as good condition asnew—finds that its rate changes, that is loses time before long, and,at the end of one year[Pg 8] is badly out of repair, solely the result oflack of knowledge, or negligenc