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Knight's Mechanical Encyclopedia (ed. Knight), G. (search)
for the purpose. Bavaria is well represented by the Messrs. Faber, whose pencils of all qualities are so well known. But recently the fine graphite found at Ticonderoga, in the State of New York, has been utilized for this purpose by the Dixon Crucible Company of Jersey City, and a fine quality of pencils produced, —the companythe scales; but while this process, with care in the manipulation, produces the purest graphite for use in the arts, it has not so far been successful except at Ticonderoga, by the American Graphite Company. A large deposit of the granulated graphite was supposed to have been found in California, and a favorable report was made ups and Canada it occurs in irregular veins and in nests, patches, and pockets, the only reliable veins known being those of the American Graphite Company at Ticonderoga, New York. Graphite is the purest carbon next to the diamond, but requiring a higher heat to burn it, and leaving a reddish ash if the specimen contains a trace o
Knight's Mechanical Encyclopedia (ed. Knight), P. (search)
he rate of 72 per minute, or over 43,000 per day. The varnishing and coloring of the surface is done by a machine at the rate of 120 per minute, or 72,000 per day, and they are polished by a machine at the rate of 106 per minute, or over 63,000 per day. All of these machines are attended by girls about twelve years of age, one to each, no skilled labor being required. The granular formation of graphite is more easily prepared than the foliated. The Dixon Company has extensive mines at Ticonderoga and a large mill at the outlet of Lake George into Lake Champlain, where the pure foliated graphite is manipulated very cheaply. Colored pencils are made in the same way as black, except that the little bars cannot be baked like the black leads. Heating destroys the color. In making them, coloring-matter of the kind desired is used with the clay, instead of graphite, and they are boiled in wax before being placed in the wood. The Florida cedar is used by all of the principal penc