 | Benjamin Martin - Science - 1747 - 398 pages
...Inftruments which are commonly call'd MECHANICAL POWERS or MACHINES : They are Six in Number, as follow, viz. The Lever, the Pulley, the Wheel and Axle, the Inclined Plane, the Wedge, and the Screw. They are call'd Mechanical Powers, becaufe they increafe our Power of moving or raifing heavy Bodies,... | |
 | George Gregory - 1798 - 630 pages
...fix fimple machines or powers, of which all the more complex engines are conftrufted ; and thefe are the lever, the pulley , the wheel and axle, the inclined plane, the wedge, and the Jcrew. It has been remarked by fome authors, that thefe fix machines may in fact be refolved into two,... | |
 | James Smith - Industrial arts - 1815 - 684 pages
...must consist, are called, by way of distinction, the Mechanical Powers. They are six in number, viz. the LEVER, the PULLEY, the WHEEL AND AXLE, the INCLINED PLANE, the WEDGE, and the SCREW. Some authors arc of opinion that we ought only to reckon two simple machines, the lerer and the inclined... | |
 | Mrs. Marcet (Jane Haldimand) - Physics - 1821 - 366 pages
...powers ; they are six in number, one or more of which enters into the composition of every machine. The lever, the pulley, the wheel and axle, the inclined plane, the wedge, and the screw. In order to understand the power of a machine, there are four things to be considered. 1st. The power... | |
 | John Griscom - Education - 1823 - 84 pages
...week, during half an hour or an hour, boys may become acquainted with the nature and properties of the lever, the pulley, the wheel and axle, the inclined plane, the wedge and the screw ; and it cannot but surprise and delight them to learn that the multiform operations of machinery,... | |
 | Richard Carlile - Free thought - 1823 - 816 pages
...to point out the way to future improvement. He did not discover or explain the mechanical powers of the lever, the pulley, the wheel and axle, the inclined plane, the screw, the wedge, and the funicular machine. He did not discover the printing prcfs, tiiai best of... | |
 | John Farrar - Dynamics - 1825 - 476 pages
...compound machines. There are now usually reckoned seven simple machines, namely, the rope machine, the lever, the pulley, the wheel and axle, the inclined plane, the screw, and the wedge. These machines, being considered simply with respect to a state of equilibrium,... | |
 | Mrs. Marcet (Jane Haldimand), Thomas P. Jones - Physics - 1826 - 286 pages
...THE WEIGHT. MRS. B. WE may now proceed to examine the mechanical powers ; they are six in number : The lever, the pulley, the wheel and axle, the inclined plane, the wedge and the serez«;\one or more of which enters into the composition of every machine. A mechanical power is an... | |
 | Levi Washburn Leonard - New Hampshire - 1827 - 398 pages
...overcome such resistances as his natural strength could never effect without them. They are six in number, the lever, the pulley, the wheel and axle, the inclined plane, the wedge, and the screw, one or more of which enters into the composition of every machine. In order to understand the power... | |
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The lever, the pulley, the wheel, and axle, the inclined plane, the wedge, and the screw. 
