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used to print from directly in ordinary ink. See Heliotype. Car′bon tool-point. An application of the diamond to mechanical purposes. These points are used to point, edge, or face tools for drilling, reaming, sawing, planing, turning, shaping, carving, engraving, and dressing flint, grindstones, whet-stones, emery, corundum, tanite, or tripoli wheels, iridium, nickel, enamel, crystals, glass, porcelain, china, steel, hardened or otherwise, chilled iron, copper, or other metals. Dickinson's carbon tool-points. 1 is a triangular prism-like cutter for turning or working stone, etc. 2 is a flat drill-point for drilling stone, glass, or metal. 3 is a burin for cutting or turning metal. 4 is a quadrangular prism for working stone, etc. 5 is a hexahedron to be inserted in the edge or face of a circular saw for cutting stone. 6 is a double-sided trapezoid, used in various positions for marking or turning stone, steel, or other substances. 7 is a chisel point
pr. 21, 1874. 152,662ManningJune 30, 1874. 154,173DavisAug. 18, 1874. 156,154GullmannOct. 20, 1874. 156,892Rickart et al.Nov. 17, 1874. 3. Corders. 12,858DickinsonMay 15, 1855. 25,255GolayAug. 30, 1859. 3. Corders (continued). No.Name.Date. 26,561BradyDec. 27, 1859. 28,776Rank inJune 19, 1860. 31,494TaylorFeb. 19, 870. 110,335BennorDec. 20, 1870. 113,741ChestermanApr. 18, 1871. 116,809CochranJuly 11, 1871. 118,655WagnerAug. 29, 1871. 119,962BreedOct. 17, 1871. 121,998DickinsonDec. 19, 1871. 122,872WagnerJan. 6, 1872. 1. Tables. (continued). No.Name.Date. 123,813FrenchFeb. 20, 1872. 127, 604HoytJune 4, 1872. 132,027SargentOct. 8 Branch's, March 3, 1874. o, Emerson's, May 26, 1874. p, Husbands's, June 2, 1874. q, Emerson's. r, Husbands's, June 23, 1874. s, Emerson's. t, Dickinson's, August 11, 1874. It will be perceived that some of these imbed the diamond in the saw by sockets, rings, or solder; others grasp it by fingers which are cl
To veneer marble on zinc: take a plate of zinc about 1/10 inch in thickness; make a frame of such a shape as will compose one of the parts of the clock case or other object; over this glue sand-paper rough side out. On the sand-paper place hot tar mastic and apply the veneer of marble previously heated. Veneer-cutting machine. 2. (Paper-making.) The process of covering a sheet of one quality or color of paper by a second sheet of differing quality or texture. It was invented by Dickinson, England, and as applied by him, the sheets of imperfectly compacted paper were laid together and united by pressure. 3. (Pottery.) A process termed veneering has been adopted with some kinds of pottery where a strong but coarse and unsightly ware is dipped, while in the biscuit condition, into a paste of superior color and quality, so as to cover the biscuit with a desirable coating, whose colors are intensified by a glaze. The inside and outside may be of different colors. Ve-ne