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Scientific American, Vol. 44, No. 15 (April 1881) (1881)
leaf 7
nd can never form less than a right angle with the hand, so to rotate the needle or so arranged that on the up stroke the valve lifts above the and shifts the eggs automatically at regular intervals, is that, if the thermometer continues shown in the annexed engraving. It is provided with a hand,… … lating in the box,and arranged time than other locks in in such a manner as to gradu- LA BARGE'S INCUBATOR. use. ©1881 SCIENTIFIC AMERICAN, INCPatents · Rubber · Gum · Flour · Engine · Patented · Scientific American · Middlings · Highest economy · Grappling tool · Kauri gum · Kansas city · Gutta percha · Horse power · Trade catalogs · Air pump · Electric middlings
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