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Scientific American, Vol. 62, No. 16 (April 1890) (1890)
leaf 3
spacing may be exert a tension at both ends. When the frame, G, ro- up, the levers, I, being down, the drawer may be closed effected without using the hands therefor, is shown in tates, motion is imparted to the several devices in the in the ordinary way, but when strongly pushed home the… … of order. LAWRENCE'S LOCK, DURBIN & SHELDON'S TYPE-WRITER ATTACHMENT. © 1890 SCIENTIFIC AMERICAN, INC.Arc · Apparatus · Gas · Munn · Scientific American · Patents · Gravity cells · Express money · Horse power · American supplement · Sugar maple · Sewing machine · Electric light · Phonograph cylinder · Small pulley
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