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The principles of mechanics : explaining and demonstrating the general laws of motion, the laws of gravity, motion of descending bodies, projectiles, mechanic powers, pendulums, centers of gravity, &cstrength and stress of timber, hydrostatics, and construction of machines : a work very necessary to be known, by all gentlemen, and others, that desire to have an insight into the works of nature and art : and extremely useful to all sorts of artificers, particularly to architects, engineers, shipwrights, millwrights, watchmakers, &cor any that work in a mechanical way : illustrated with forty-th

The principles of mechanics : explaining and demonstrating the general laws of motion, the laws of gravity, motion of descending bodies, projectiles, mechanic powers, pendulums, centers of gravity, &cstrength and stress of timber, hydrostatics, and construction of machines : a work very necessary to be known, by all gentlemen, and others, that desire to have an insight into the works of nature and art : and extremely useful to all sorts of artificers, particularly to architects, engineers, shipwrights, millwrights, watchmakers, &cor any that work in a mechanical way : illustrated with forty-th Stock Photo
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Contributor:

The Reading Room / Alamy Stock Photo

Image ID:

2AXFWA3

File size:

7.2 MB (0.3 MB Compressed download)

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Dimensions:

1570 x 1592 px | 26.6 x 27 cm | 10.5 x 10.6 inches | 150dpi

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The principles of mechanics : explaining and demonstrating the general laws of motion, the laws of gravity, motion of descending bodies, projectiles, mechanic powers, pendulums, centers of gravity, &cstrength and stress of timber, hydrostatics, and construction of machines : a work very necessary to be known, by all gentlemen, and others, that desire to have an insight into the works of nature and art : and extremely useful to all sorts of artificers, particularly to architects, engineers, shipwrights, millwrights, watchmakers, &cor any that work in a mechanical way : illustrated with forty-three copper-plates . TlNE.^a-.jff3. ^ i3-2Qe jjm. Tvm^,z.iea. d SedV. Xr. PRODUCING MOTION. 163 4. The leaver AB, may alfo be moved thus, by help of a f i c.machine GFZ>, moving uniformly along GZ). Make ///, IF icg.right lines; and make as many fuch teeth as you will; and thefe will give a uniform motion to the leaver. Make the curves EFE all parabolas, equal and equidiftant;whofe vertices are at F; and their bafcs meet at E, and thefewill make the leaver rife and fall with an accelerated motion.Such parabolic teeth as thefe may be placed on a wheel, whofeaxis is perpendicular to the horizon. 5. One wheel may move another with an accelerative motion j ^^g.thus. On the circle or wheel £F, tzkt Ea, ab, be, i^c. equal to each other. And on the edge of the wheel BD take 5i, avery fmall part; and 13, 35, 57, iSc. 3, 5, 7, l£c. times 5i,fuppofe the plane of the wheel EF to be extended as far as themarks i, 3, 5, 7, &c. then turn the wheel EF, till E fall ona ; then mark the point i on the plane of the whctl EF. Thenturn EFtill E

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