The American watchmaker and jeweler; an encyclopedia for the horologist, jeweler, gold and silversmith .. . Fig. 215. Fig. 216. MOVEMENT REST. A wooden, bone or rubber shell, Fig. 216,similar to eye-glass frames, for holding movements while undergoingrepairs, oiling, etc. MUDGE THOMAS. The inventor of the lever escapement and amaker of marine chronometers. He was born at Exeter, England, in1715. He was apprenticed to the celebrated George Graham in 1750 to 1771 he was engaged in business in Fleetstreet, London. In 1765 he invented the lever escape-ment. In 1771 he removed to Plymouth
The American watchmaker and jeweler; an encyclopedia for the horologist, jeweler, gold and silversmith .. . Fig. 215. Fig. 216. MOVEMENT REST. A wooden, bone or rubber shell, Fig. 216,similar to eye-glass frames, for holding movements while undergoingrepairs, oiling, etc. MUDGE THOMAS. The inventor of the lever escapement and amaker of marine chronometers. He was born at Exeter, England, in1715. He was apprenticed to the celebrated George Graham in 1750 to 1771 he was engaged in business in Fleetstreet, London. In 1765 he invented the lever escape-ment. In 1771 he removed to Plymouth. In 1777 hewas made clockmaker to the king. In 1793 Parliamentvoted him the sum of £2,500, he having previouslyreceived £500, as a reward for his marine time devoted the greater part of his life to the improve-Thomas Mudge. ^^^^ ^^ the marine chronometer, and his work in thisline was celebrated for finish and correct proportion of details. Hedied Nov. 24, NON-MAGNETIC WATCH. A watch whose parts cannot bepolarized in a magnetic field; a watch whose quick moving parts aremade of some other metal than steel or iron. Paillard, who has studiedtion-magnetic metals with great care, makes his balance springs of pal-ladium, and his balances of palladium alloyed with copper, silver and•other metals. In some instances he appears to have used a palladium Oil. 248 alloj for the inner part, and brass for the outer part of the rim, and inothers to have formed both laminae of different alloys of bronze, which combines strength with lightness, is particu*larlj suited for the lever and pallets. The American Waltham WatchCompany have obtained remarkable results in non-magnetic watches^with an alloy of platinum. Steel in its hardened and tempered form,has long been used for the balance springs of watches, but from the factthat it owed its elasticity to the process of fire hardening_ it has alwaysbeen uncertain in its action, and ofte
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