 | Thomas Dick - 1838 - 690 sider
...bars of thin iron ?" And when we consider that all the mechanical powers may be reduced t'i the /ever, the wheel and axle, the pulley, the inclined plane, the wedge and the «crew, how astonishing are the forces exer'ed, and the effects produce J, by their various combinations... | |
 | Leonard Dunnell Gale - 1838 - 280 sider
...of. 36 length of. 37 expansion of. 37 gridiron............... 37 MECHANICAL POWERS. Mechanical Powers The Lever The Wheel and Axle The Pulley The Inclined Plane The Wedge ..... 38 38 43 45 47 60 The Screw .......................... 60 GENERAL REMARKS. Friction. HYDROSTATICS.... | |
 | Society for the diffusion of useful knowledge - 1839 - 380 sider
...manner at another point, is a machine. The simple machines or mechanical powers are six in number — the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. These are the elements of all machines, however complicated. See Mcch., Treat. II., Arts. 1—6. In... | |
 | James Ferguson - 1839 - 556 sider
...made. 1 he me' The simple machines, usually called mechanical powers, powers, are six in number, viz. the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screws.0 — They are called mechanical powers, because they help us mechanically to raise weights,... | |
 | George Leonard (Jr.) - 1839 - 362 sider
...SOMETIMES CALLED MECHANICAL POWERS. LESSON 185. There are usually reckoned six simple machines — the lever, the wheel and axle, the pulley, the inclined plane, the screw, and the wedge. The force that raises a weight, or overcomes a resistance, is called the power.... | |
 | Benjamin Greenleaf - 1839 - 356 sider
...The body 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... | |
 | Thomas Dick - 1840 - 370 sider
...machines, the principles on which their energy depends ; the properties of the mechanical powers — the lever, the wheel, and axle, the pulley, the inclined plane, the wedge and the screw — and the effects resulting from their various combinations. From the investigations of philosophers... | |
 | Frederick Augustus Griffiths - 1840 - 436 sider
...be effected by the natural strength without them. They are usually accounted Six in number ; viz. : The Lever ; the Wheel, and Axle ; the Pulley ; the Inclined Plane ; the Wedge ; and the Screw. Weight, and Power when opposed to each other, signify the body to be moved, and the body that moves... | |
 | Frederick Emerson - 1840 - 302 sider
...effected by the direct application of natural strength. They are usually accounted six in number; viz. the Lever, the 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 any increase of the quantum... | |
 | 1837 - 800 sider
...the cord, and the inclined plane. They have been, however, differently enumerated by others ; viz., the lever, the wheel and axle, the pulley, the inclined plane, the wedge and the screw, being six in number. The first class in eludes every machine which is composed of a solid body revolving... | |
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These simple machines are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. 
