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Scientific American, Vol. 46, No. 12 (March 1882) (1882)

leaf 7

An illustration from Scientific American, Vol. 46, No. 12 (March 1882), 1882, leaf 7
adle. hard substance by the human hand. The hammer was used by Michael Collins, of this city, tions : ■*'«>♦■ . in welding the ends of iron tubes in steam radiators. The The first thing to be done is to make a facsimile of the Work Yielded by Various Substances. painting that is to be copied, in… … —— •* i » > »■ ■—■ By turning the slotted cam in one direction, the bolt is A CURIOUSLY WORN HAMMER HANDLE. NEW SHOW-BOX COVER. thrown outward against the frame with sufficient pressure It is said that "goods neatly kept are half sold," and to hold the sash in any desired position. By turning it in…

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