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Scientific American, Vol. 61, No. 20 (1889) (1889)
leaf 4
auses an increased friction be- are arranged one or more sliding flat shelves, whose side when the bow is turned it is so secured that it cannot tween the wheels and the rails, which is claimed to be edges are adapted to run in grooves, friction rollers be- |far superior to that obtained by sanding… … until within a short time of his death. formly coloring the mass, © 1889 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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