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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: For the Use of Academies, as Well as Private Tuition - Page 154
by Charles Hutton - 1831

## An Introduction to Mensuration and Practical Geometry

John Bonnycastle - Measurement - 1835 - 288 pages
...Powers are the most simple of mechanical applications to increase force and overcome resistance. They are usually accounted six in number, viz. The Lever...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
...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: for advanced scholars. Part third

Frederick Emerson - Arithmetic - 1835 - 288 pages
...overcoming greater resistance than could be effected by the direct application of natural strength. They are usually accounted six in number; viz. the Lever,...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, Volume 2

Luke Hebert - Industrial arts - 1836
...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 - 344 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
...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...

## Elements of Natural Philosophy: Embracing the General Principles of ...

Leonard Dunnell Gale - Physics - 1838 - 276 pages
...as long to lift it through the same H»ce. LXXII. There are usually reckoned six mechanical powers : the lever ; the wheel and axle ; the pulley ; the inclined plane ; the wedge ; and the screw. THE LEVER. LXXIII. THE LEVER is a bar of iron or wood, supported by and moveable on a round centre...