. Canadian forest industries 1880-1881. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. 16 THE CANADA LUMBERMAN. EMERY WHEELS FOR SAW GUMMING!. Solid Emery Wheels are now almost in universal use for the purpose of gnUetting and gumming saws. Statistics show from 2-'3,(X)0 to 30,000 saw-mills in the United States. Many of these run only a tingle saw each. A one-saw mill would nxe one or two wheels a year, costing *3 to $1 each, and when such small mills order single Emery Wheels from the factory, the exprexp charges often equal the cost of the wheel.
. Canadian forest industries 1880-1881. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. 16 THE CANADA LUMBERMAN. EMERY WHEELS FOR SAW GUMMING!. Solid Emery Wheels are now almost in universal use for the purpose of gnUetting and gumming saws. Statistics show from 2-'3,(X)0 to 30,000 saw-mills in the United States. Many of these run only a tingle saw each. A one-saw mill would nxe one or two wheels a year, costing *3 to $1 each, and when such small mills order single Emery Wheels from the factory, the exprexp charges often equal the cost of the wheel. There was a lime when the quality of Emery Wheels was bo uncertain, and the demand so fickle, that storekeepers could no'afford to carry them in stock. Now, however, Haw Gumming Wheels have become as staple an article as Flies, and every dealer in saws, Hardware and Mill Supplies can afford to carry a few dozen standard sizes in stock. Large dealers order stocks of $500 to $750 worth at a time. Haw Gumming Wheels are used with the edge (or face) square, round or beveled. Probably seven-eigt lis of all in use are beveled. Tne principal sizes are: 8xi 8x1 8x4 J Ox J ) 10x1 I lOxj i 10xg ) "i in. hole. 1&| 1 12xa l&j ! Holes, 12xg f i, l and 1 inch. 12x* i 12xg J Probably more wheels 12x2, 12xj and 12x3 are "Sfid than all the olher sizes together. Haw Gumming Wheels are used, however, of all sizes up to 21x1]. The most frequent complaint is that Emery Wheels harder, the saw so that a file won't touch it. The answer is that you don't want a file to touch it. An expert workman will shape and sharpen the teeth with an Emery Wheel, leaving the teeth case hardened, in which condition the saw will cut about .33) per cent, more lumber than a soft saw will. Tb"se who want to use the file, however, have only to touch the saw lirjhlty a second time (after going all over It once), and this second touch will cut through the case-hardened scale. .A_ QUE STIO UST OF QUAL
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectforestsandforestry
