By Henry G. Abbott
Back in all its unique status Abbott's American Watchmaker and Jeweler continues to be the final word source for watchmaking and jewellery craftsmanship. No point of the exchange is going exposed during this rather American method of those old methods, prepared to be the ideal advent to studying the instruments, components, and their makes use of, passed down for lots of generations.Here you can find 1000s of drawings, descriptions, and diagrams of many different types of escapements, whole instructions for making staffs, recommendations for detoxification, pickling, and sprucing every kind of metals, an entire checklist of worthwhile phrases, and masses more.For years Abbott revised this unrivaled paintings, consulting the simplest specialists to supply the main actual and entire textual content. here's the ultimate reference, immediately from an period of dignified execs and critical craftsmen.
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Extra info for Abbott's American Watchmaker. An Encyclopedia for the Horologist, Jeweler, Gold and Silversmith
Brittania. 78 of copper and 2,91 of zinc. Chrysorine. This alloy is sometimes used for watch cases and parts of the movement. In color it closely resembles 18 to 20 carat gold. It does not tarnish when exposed to the air and has a beautiful luster. It consists of 100 parts of copper and 50 of zinc. Fictitious Silver. No. ; copper, 2 oz. ; No. ; nickel, 1 oz. ; spelter 10 dwts. Malleable Brass. A malleable brass is obtained by alloying 33 parts of copper and 25 parts zinc; the copper is first thrown into the pot, which is covered slightly and fused.
Alloys Resembling Silver. The following alloys have a close resemblance to silver: Minargent is composed of 100 parts copper; 70 nickel; 1 aluminium and 5 of tungstate of iron. 5, antimony 5 and bismuth 2. Warne metal is composed of tin 10, bismuth 7, nickel 7 and cobalt 3. Aluminium Zinc. Alloys of aluminium and zinc are very hard and take a beautiful polish. An alloy of 97 parts of aluminium and 3 of zinc gives a result that is as white as the pure metal, harder than aluminium and very ductile.
6. Setting out the Escapement. Draw a circle representing the escape wheel, which we assume to have thirty teeth, of which the anchor embraces eight. Mark off the position of four teeth on each side of the center one, and draw radial lines which will represent the backs of the teeth. Space between one tooth and the next ==12° and 8 spaces=96°. Then = equal 48° to be set off on each side of the center. 4. From the pallet staff center describe a circle whose radius = seven-tenths of the radius of escape wheel, that is, one-half the distance between the escape wheel and pallet staff centers.
Abbott's American Watchmaker. An Encyclopedia for the Horologist, Jeweler, Gold and Silversmith by Henry G. Abbott