The American watchmaker and jeweler; an encyclopedia for the horologist, jeweler, gold and silversmith .. . 21. Suppose thehands show 9:45 or 2:45, bring both hands to 12 or 6 and they willimmediately assume the correct position. Take off the minute handand lay it on the bench for five or six minutes; put it on again, give ita twirl, and it will stop at the correct time. Various other tricks willsuggest themselves for the astonishment and mystification of the jew-elers patrons, and considerable benefit can be derived from the curiosityof an excited town. GRAVITY ESCAPEMENT. An escapement in wh
The American watchmaker and jeweler; an encyclopedia for the horologist, jeweler, gold and silversmith .. . 21. Suppose thehands show 9:45 or 2:45, bring both hands to 12 or 6 and they willimmediately assume the correct position. Take off the minute handand lay it on the bench for five or six minutes; put it on again, give ita twirl, and it will stop at the correct time. Various other tricks willsuggest themselves for the astonishment and mystification of the jew-elers patrons, and considerable benefit can be derived from the curiosityof an excited town. GRAVITY ESCAPEMENT. An escapement in which the trainraises a lever a constant distance, and the weight of the lever whenreturning to position gives impulse to the pendulum. The double three-legged variety was invented by E. B. Denison in 1854. Gravity escape-ments are particularly applicable to turret clocks. GREAT WHEEL. The wheel on the fusee arbor which drives thecenter pinion. The largest wheel in a watch or clock. GRIGNION, THOMAS. A well-known watch and clockmaker, ofLondon, who died in 17S4. His son Thomas, also a clockmaker, claimed. 185 Guard Pin. for him the honor of bringing to perfection the horizontal principle inwatches and the dead beat in clocks. GROSSMANN, MORITZ. A celebrated horologist, author andlinguist. Though born and raised in Saxony, he was very conversantwith the French, Italian and English languages, and contributed tomany technical journals throughout the world. He was a member of theBiitish Horological Institute, the Galileo Galilei,Milan, Italy, and the Polytechnic Society of was while in the hall of the latter society, and justafter delivering a lecture on horology, that he wasstricken with apoplexy, which resulted in his deathJan. 23, 1885. He received his training as a watch-maker under the best masters of Saxony, Switzerland,France and England. He located in Glashutte,^ Saxony, in 1854, and began the manufacture of Moriiz Grossman, fi^e watches, tools and metric gauges, a
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