Scientific American. 146 [SEPTEMBER 3, 1887. t __.\, A CONVENIENT DEVICE IN SHARPENING SAWS. The illustration herewith shows a novel file attach- ment, for which a patent has recently been allowed. Inside the box, In filing saws by hand it is very difficult, even after years of practice, to so hold… … BROUGH’S CENTER BOARD FOR VESSELS. mortars, and the ‘“‘annular frame” is likewise adapted for iron or metallic mortars, as well partially at the rear. When the board is extended, this as for glass, porcelain, or Wedgwood, and vice versa. hultuw bhoato c ; anid w én Closed incases COOK'S SAW FILING…
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