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 point of the exchange is going exposed during this fairly American method of those historic strategies, equipped to be the best 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 varieties of escapements, entire instructions for making staffs, concepts for detoxing, pickling, and sprucing all types of metals, an entire checklist of worthy phrases, and lots more and plenty more.For years Abbott revised this unequalled paintings, consulting the easiest professionals to supply the main exact and entire textual content. this is the ultimate reference, immediately from an period of dignified execs and critical craftsmen.
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Extra resources for Abbott's American Watchmaker. An Encyclopedia for the Horologist, Jeweler, Gold and Silversmith
The standard bronze in use consists of ninety parts of copper to ten of aluminium. It gives sharp castings, is easier to work than steel, can be engraved, rolled into sheets or drawn into wire and when exposed to the air suffers less change than cast iron, steel, silver or brass. It can be soldered only with an aluminium alloy. Aluminium Silver. Aluminium and silver are easily alloyed and these alloys are more easily worked than silver although harder. An alloy of ninety seven parts aluminium and three of silver is not affected by ammonium hydrosulphide and has a beautiful color.
The whole tool should be heavy and low and stand on the bench firmly, and, if a fine one, have two level vials set in its base to level up the parallels with, before using. With a level bench and a tool made so that the feet are parallel to the top edge of the parallels, there will be little trouble in the balance rolling by gravity while poising. There are a great variety of poising tools, and any that have the parallel bars true and straight and parallel to one another, readily adjusted for distance, and have a firm and heavy stand, will be easily and satisfactorily handled.
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. Artificial Gold. A metallic alloy, at present very extensively used in France as a substitute for gold is composed of: Pure copper, 100 parts; zinc, or preferably tin, 17 parts; magnesia, 6 parts; sal-ammoniac, 3 to 6 parts; quicklime, 1/8 part; tartar of commerce, 9 parts, are mixed as follows: The copper is first melted, and the magnesia, sal-ammoniac, lime and tartar are then added separately and by degrees, in the form of powder; the whole is now briskly stirred for about one-half hour, so as to mix thoroughly, and then the zinc is added in small grains by throwing it on the surface and stirring until it is entirely fused; the crucible is then covered and fusion is maintained for about 35 minutes.
Abbott's American Watchmaker. An Encyclopedia for the Horologist, Jeweler, Gold and Silversmith by Henry G. Abbott