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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, the...
A Course of Mathematics in Two Volumes for the Use of Academies as Well as ... - Page 145
by Charles Hutton - 1807

## The Elements of Mechanics: Comprehending Statics and Dynamics. With a ...

John Radford Young - Electronic book - 1834 - 302 pages
...parts of all machinery are called the mechanical powers. These are six in number, and are as follow : the Lever, the Wheel and axle, the Pulley, the Inclined Plane, the Screw, and the Wedge. The Lever (75.) A lever is a rigid bar or rod, moveable about a fixed point or...

## An Introduction to Mensuration and Practical Geometry

John Bonnycastle - Measurement - 1835 - 288 pages
...simple of mechanical applications to increase force and overcome resistance. They are usually accounted six in number, viz. The Lever —The Wheel and Axle—...The Inclined Plane — The Wedge — and the Screw. LEVER. To make the principle easily understood, we must suppose the lever an inflexible rod without...

## The Engineer's and Mechanic's Encyclopædia: Comprehending ..., Volume 2

Luke Hebert - Industrial arts - 1835 - 938 pages
...that enter into the construction of the various parts of machinery : they are usually considered to be six in number ; viz. the lever, the wheel and axle,...pulley, the inclined plane, the wedge, and the screw. It may be easily shewn, however, that these are capable of being reduced to greater simplicity. Thus...

## The North American Arithmetic: Part Third, for Advanced Scholars

Frederick Emerson - Arithmetic - 1835 - 288 pages
...resistance than could be 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 JVedge, and the Screw. The advantage gained by the use of the mechanical powers, does not consist in...

## The Engineer's and Mechanic's Encyclopædia: Comprehending ..., Volume 2

Luke Hebert - Industrial arts - 1836 - 942 pages
...that enter into the construction of the various parts of machinery : they are usually considered to be six in number ; viz. the lever, the wheel and axle,...pulley, the inclined plane, the wedge, and the screw. It may be easily shewn, however, that these are capable of being reduced to greater simplicity. Thus...

## The Mechanic's Calculator: Comprehending Principles, Rules, and Tables in ...

William Grier - Mechanical engineering - 1836 - 380 pages
...other. 2. The simple machines, or those of which all others are constructed, are usually reckoned six : the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. To these the funicular machine is sometimes added. 3. The weight signifies the body to be moved, or...

## The Mechanic's Calculator: Comprehending Principles, Rules, and Tables in ...

William Grier - Mechanical engineering - 1836 - 344 pages
...machines, or those of which all others are constructed, are usually reckoned six : the lever, the wiieei and axle, the pulley, the inclined plane, the wedge, and the screw. To these \hefunicular machine is sometimes added. 3. The weight signifies the body to be moved, or...

## The scientific reader and practical elocutionist

R T. Linnington - 1837 - 274 pages
...simple, and is also that on which all the other mechanical powers depend. The Mechanical Powers are six in number; viz., the Lever, the Wheel and Axle,...Pulley, the Inclined Plane, the Wedge, and the Screw: in the various combinations of these all machines exist. The Lever is chiefly used to raise heavy weights...