By Henry G. Abbott
Back in all its unique status Abbott's American Watchmaker and Jeweler is still the final word source for watchmaking and jewellery craftsmanship. No element of the alternate is going exposed during this noticeably American method of those old procedures, geared up to be the precise advent to studying the instruments, elements, and their makes use of, passed down for plenty of generations.Here you can find hundreds and hundreds of drawings, descriptions, and diagrams of many different types of escapements, entire instructions for making staffs, suggestions for detoxing, pickling, and sharpening every kind of metals, a whole checklist of worthwhile phrases, and lots more and plenty more.For years Abbott revised this unrivaled paintings, consulting the easiest professionals to supply the main exact and finished textual content. here's the ultimate reference, instantly from an period of dignified execs and severe craftsmen.
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Additional resources for Abbott's American Watchmaker. An Encyclopedia for the Horologist, Jeweler, Gold and Silversmith
9. Fig. 10. Fig. 11. Fig. 12. Sizes and Weights of Balances. The size and weight of the balance are two very important elements in the timing of a watch and especially in adjusting to positions. The rules governing the sizes and weights of balances, says Mr. Chas. Reiss, are of a complex nature, and though positive, are difficult of application on account of the impracticability of determining the value of the elements on which we have to base our calculations. These elements are the main-spring or motive power, the hairspring representing the force of gravity on the pendulum, momentum and friction.
This salt is soluble in tepid water. Potassium Bitartrate, or tartar, is a salt produced from the crystals found on the sides of wine casks. When purified it is known as cream of tartar. It is acid, and is slightly soluble in water. Potassium Hydroxide, or caustic potash of commerce, is sold in the form of small sticks, which must be kept in air-tight bottles. Potassium Nitrate, or saltpetre, is used as a flux, and as it readily yields a portion of its oxygen to other bodies, it is used extensively for oxydizing metals.
ANODE. The positive pole of an electric current, that pole at which the current enters; opposed to cathode, the point at which it departs. ARBOR. An axle or spindle on which a wheel turns. ARC. Any given part of the circumference of a circle, or other curve ARCOGRAPH. An instrument sometimes used by watchmakers for drawing a circular arc without the use of a central point. ARNOLD, JOHN. Born in Cornwall, England, in 1744, and died at Eltham, England, in 1799. He was the inventor of the helical form of balance spring and a chronometer escapement.