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Scientific American, Vol. 36, No. 7 (1877) (1877)

leaf 6

An illustration from Scientific American, Vol. 36, No. 7 (1877), 1877, leaf 6
e made in one piece. plain part of the screw. Ifit is larger, the head of the screw of the required core. The grain of the wood may run in the It will be observed that this staving up a bend is both will sink deeper; while, if it is smaller, a thread will be cut in direction of the arrow. It is… … inches diameter inside, with 1 inch thickness of metal. We heat from the steam pipe. The disks upon which the bend drawn to its place. The glue should be applied, and the proceed by taking a clean board and drawing on it the line, is built, and of which there should be at least three, are screw…

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