 | Charles Tomlinson - 1849 - 188 pages
...resistance. In the composition of machines it is usual to speak of six mechanical porcers ;* namely, the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw; although in reality these contrivances are but applications of the principle... | |
 | John Craig (F.G.S.) - 1849 - 1148 pages
...mechanics in philosophy ; acting by physical power. Mechanical powers, or elementary machines, are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw: to which some writers have added the rope-machine and the balance. All these,... | |
 | Daniel Adams - Measurement - 1850 - 144 pages
...simple machines, employed to facilitate the moving of weights or the overcoming of resistance. They are six in number; viz., the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw. In mechanical powers and in machinery, the thing to be moved, or the resistance... | |
 | John Weale - Architecture - 1850 - 600 pages
...of parts which are supposed to - be perfectly rigid. The mechanical powers, sometimes described as six in number, viz. the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw, are reducible to two only, viz. the lever and the inclined plane, in each of... | |
 | John Weale - 1850 - 590 pages
...elasticity of parts which are supposed to be perfectly rigid. The mechanical powers, sometimes described as six in number, viz. the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw, are reducible to two only, viz. the lever and the inclined plane, in each of... | |
 | Benjamin Greenleaf - Arithmetic - 1850 - 368 pages
...power. The body which receives motion from another is called the weight. The mechanical powers are six, the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Screw, and the Wedge. THE LEVER. about a fixed point, called its I /\ The lever is a bar, movable fulcrum... | |
 | 1850 - 766 pages
...and La Grange. The mechanical powers may be reduced to three, but they are usually expressed as six, the lever, the wheel and axle, the pulley, the inclined plane, the screw, and the wedge. In a single moveable pulley the power gained is doubled. In a continued combination... | |
 | Thomas Dick - Cosmology - 1850 - 684 pages
...of a few bars of thin iron ?" And when we consider that all the mechanical powers may be reduced to the lever, the wheel and axle, the pulley, the inclined plane, the wedge and the screw, how astonishing are the forces exerted, and the effects produced, by their various... | |
 | 1850 - 772 pages
...and La Grange. The mechanical powers may be reduced to three, but they are usually expressed as six, the lever, the wheel and axle, the pulley, the inclined plane, the screw, ana the wedge. In a single moveable pulley the power gained is doubled. In a continued combination... | |
 | Frederick Emerson - Arithmetic - 1851 - 294 pages
...wale. What tonnage must be paid for ? 35. What is the government tonnage of a double-decked vjssel, 110.5 feet keel, and 30.6 feet breadth at the beam...Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw. The advantage gained by the use of the mechanical powers, does not consist in... | |
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The MECHANICAL POWERS are certain simple instruments employed in raising greater weights, or overcoming greater resistance than could be effected by the direct application of natural strength. They are usually accounted six in number; viz. the Lever,... 
