. Farm implements, and the principles of their construction and use; an elementary and familiar treatise on mechanics, and on natural philosophy generally, as applied to the ordinary practices of agriculture ... 160 MECHANICS. Washing-machine (Fig. 140), which is worked bythe alternating motion of the handle, A, pressing aswinging-hoard, perforated with holes, with great force Fig. Lever Washing-machine. against the clothes next to one side of the water-box. Like the printing-press, this machine exerts thegreatest power just as the motion of the lever iscompleted, and at the time it is m
. Farm implements, and the principles of their construction and use; an elementary and familiar treatise on mechanics, and on natural philosophy generally, as applied to the ordinary practices of agriculture ... 160 MECHANICS. Washing-machine (Fig. 140), which is worked bythe alternating motion of the handle, A, pressing aswinging-hoard, perforated with holes, with great force Fig. Lever Washing-machine. against the clothes next to one side of the water-box. Like the printing-press, this machine exerts thegreatest power just as the motion of the lever iscompleted, and at the time it is most needed. Thesame principle is exhibited in Kendalls Cheese-press(Fig. 141), where the lever and the wheel-and-axleare combined with the two knee-joints, one on eachside of the press, drawing down a cross-beam upon thecheese with a greatly multiplied power. EmerysHay-press, for compressing hay into bales for distantconveyance, is another example (Fig. 142). The hayis thrown into a space in a strong box by opening thetop doors, and when trodden down, the doors are closedand secured by buttoning down the cross-bars. Horse- THE KNEE-JOINT 141. 161
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Keywords: ., bookcentury1800, bookdecade1850, bookpublishernewyo, bookyear1854
