 | Olinthus Gregory - 1826 - 604 σελίδες
...are estimated they must be divided in the investigation ; these are in number six, viz. the lever, the wheel and axle, the pulley, the inclined plane, the screw, and the wedge. These are most commonly known by the name of the mechanical powers. In all these the mechanical advantage... | |
 | Luke Herbert - 1829 - 394 σελίδες
...elements of machinery are, by writers on mechanics, generally itivided into six kinds ; viz. the lever, the wheel and axle, the pulley, the inclined plane, the screw, and the wedge. There seems, however, to be one or two other ways of generating mechanical efficacy, but they are very... | |
 | Sir Richard Phillips - 1832 - 450 σελίδες
...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 movable pulley the power gained is doubled. In a continned combination the power is twine... | |
 | Benjamin Greenleaf - 1839 - 356 σελίδες
...which receives motion from another, is called the weight. The mechanical powers are five, the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Screw and the Wedge. LEVER. The lever is a bar, movable about a fixed point, called its fulcrum or prop. It is in theory... | |
 | Benjamin Greenleaf - 1841 - 334 σελίδες
...which receives motion from another, is called the weight. The mechanical powers are five, the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Screw and the Wedge. LEVER. The lever is a bar, movable about a fixed point, called its fulcrum or prop. It is in theory... | |
 | Denison Olmsted - 1846 - 454 σελίδες
...women, was prevalent at Rome until the time of Agustus, when we find the first mention of water mills. Distinguish between tools, machines, and engines....aided by the steam engine with the Egyptians. The elements of machinery are found in what aie called the Meclumical Powers. They are six in number, viz.... | |
 | James Bates Thomson - 1847 - 432 σελίδες
...ft., and the depth 25 ft. ? MECHANICAL POWERS. 648. The Mecfianical powers are six, viz: the lever, the wheel and axle, the pulley, the inclined plane, the screw, and the wedge. 649. When the pmtxr and weight, act perpendicularly to the arms of a straight, lever, the power is... | |
 | James Bates Thomson - 1848 - 432 σελίδες
...ft., and the depth 25 ft. 1 MECHANICAL POWERS. G48. The Mechanical powers are six, viz: the lever, the wheel and axle, the pulley, the inclined plane, the screw, and the wedge. 649. When the pi.wer and weight act perpendicularly to the arms of a straight lexer, the power is to... | |
 | 1850 - 766 σελίδες
...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 the power is twice... | |
 | Daniel Leach - 1851 - 280 σελίδες
...the beam ? MECHANICAL POWERS. SECTION XLVI. 394. THERE are six mechanical powers, viz., the lever, the wheel and axle, the pulley, the inclined plane, the screw, and the wedge. 395. The lever is a bar, supposed to be inflexible, movable upon a fulcrum. 396. To find what weight... | |
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Mechanical powers are six, viz : the lever, the wheel and axle, the pulley, the inclined plane, the screw, and the wedge. 
