A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . the works at Manchester the charges now are 180 lbs. to 200 lbs. of Indian-rubber each, andthey produce single blocks 6 feet long, 12 or 13 inches wide, and 7 inches thick, by steam-power. The Mammoth machine of Mr. Chauffee, in the United States, weighs about 30 tons,and appears to have been invented about 1837, and is a valuable machine, differing in con-struction from Hancocks masticators, but answers well in many respects; it may be con-sidered as the founda
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . the works at Manchester the charges now are 180 lbs. to 200 lbs. of Indian-rubber each, andthey produce single blocks 6 feet long, 12 or 13 inches wide, and 7 inches thick, by steam-power. The Mammoth machine of Mr. Chauffee, in the United States, weighs about 30 tons,and appears to have been invented about 1837, and is a valuable machine, differing in con-struction from Hancocks masticators, but answers well in many respects; it may be con-sidered as the foundation of the American trade. In 1820 the blocks were cut into forms of square pieces, sold by the stationers to rubout pencil marks, and then thin sheets for a variety of purposes. A cubical block cut by akeen sharp blade constantly wet, gave a sheet of Indian-rubber, the block raised by screwsand the knife guided, enabled sheets of any thickness to be cut, sometimes so even andthin, as to be semi-transparent; when warm, the sheets could be joined edge to edge, andthus large sheets be produced: from these blocks, rollers of soli
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
