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Scientific American, Vol. 93, No. 22 (November 1905) (1905)

leaf 11

An illustration from Scientific American, Vol. 93, No. 22 (November 1905), 1905, leaf 11
nical cap piece, which is cemented TOOL FOR BORING RECTANGULAR HOLES. to the neck of the bottle, and further held by bending A decidedly novel tool has just been invented, by it over a shoulder formed on the bottle neck. It which a hole may be bored having square or rectangu- will be noted that the… … spindle of the terials, such as concrete blocks, bricks, ornaments, and of the heel the screws are driven into holes in the tool. The head TOOL FOB BORING RECTANGULAR the like. The construction of the machine is very under surface of the heel so. that not only do the screws of the tool is HOLES.…

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