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Scientific American, Vol. 50, No. 9 (March 1884) (1884)

leaf 4

An illustration from Scientific American, Vol. 50, No. 9 (March 1884), 1884, leaf 4
e forward and backward with relation to the anvil, tained from Mr. Frederick Broughton, member of a commis- that their lower sides are flush with the lower sides of the by placing the pivot of the handle in slots; a thumb screw sion for inquiring into claims arising out of the building of bars, so… … pose, made by boiling 1 part of caustic soda, 3 steel tool cut like a file on the angular surface, IMPROVED SAFETY SWITCH GUARD. parts of colophonium (resin) in 5 parts of water, or with fine teeth, after the manner of a rose bit; and kneading into it half the quantity of plaster great care being…

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