one in a gang of annular cutters having spiral flanges with th open spaces between them for the free discharge of the cuttings substantially as set forth. Fourth The arrangement of the supports for the open spiral stock substantially as and for the purpose set forth. I claim the combination of ferrule A fork F case P bolt 0 Ou and clasps 12 3 4 the whole constructed arranged and operated substantially in the manner and for the purpose set forth., scientific american, 1865-12-11
one in a gang of annular cutters having spiral flanges with th open spaces between them for the free discharge of the cuttings substantially as set forth. Fourth The arrangement of the supports for the open spiral stock substantially as and for the purpose set forth. I claim the combination of ferrule A fork F case P bolt 0 Ou and clasps 12 3 4 the whole constructed arranged and operated substantially in the manner and for the purpose set forth., scientific american, 1865-12-11
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