+ 0+ -e wooden box supported by a curved arm inserted in the tool MISCELLANEOUS INVENTIONS, manipulative skill, but when compared with a fine job of filing, fitting, oreven turning, it is easy, and there isa charm Animprovement in casting chilled mould boards, patented about making a nicely… … as ascraper for giving the final shape to the concave grind- between the armature and the poles of the magnet, andthus Fig. 10.—LENS GRINDING ATTACHMENT FOR FOOT augment the power of the electro-magnet and increase the ing tools. LATHES, length of the swing of the armature. For grinding convex…
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