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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

## Lee's Home and Business Instructor

Business etiquette - 1897 - 392 pages
...of transferring forces from their natural point of action, to another point of application. They are the "lever." the wheel and axle, the pulley, the "inclined plane," the wedge, and the screw. In reality there are only two mechanical powers, for the pulley and wheel are only assemblages of levers,...

## Teacher's Manual, Pt. 1-6, for The Prang Elementary Course in Art ..., Part 6

John Spencer Clark, Mary Dana Hicks, Walter Scott Perry - Art - 1900 - 350 pages
...beautiful for its own sake.'' — SIR WVKE BAYLISS. Simple Machines. — There are six simple machines — the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw — which enter largely into all machinery. Familiar examples of the lever are found in the seesaw,...

## The Mechanical Triumphs of the Ancient Egyptians

Francis Morgan Barber - Engineering - 1900 - 176 pages
...always in use. These methods consisted in various applications of the simple mechanical powers, ie, the lever, the wheel and axle, the pulley, the inclined plane, the wedge and the screw. Besides these the Romans knew of the power of torsion, or twisted rope, of shrinkage from wetting and...

## Coal and Metal Miners' Pocketbook of Principles, Rules, Formulas, and Tables ...

International Correspondence Schools - Mining engineering - 1900 - 730 pages
...treated, as all machinery, however complicated, is merely a combination of the six elementary forms, viz.: the lever, the wheel and axle, the pulley, the inclined plane, the wcdtjc, and the screw; and these six can be still further reduced to the lever and the inclined plane....

## XX Century Cyclopaedia and Atlas: Biography, History, Art, Science ..., Volume 5

Ainsworth Rand Spofford, Charles Annandale - Encyclopedias and dictionaries - 1901 - 530 pages
...instruments or elements of which every machine, however complicated, must be constructed; they are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. See those terms. Mechanics, the term originally used to denote the general principles involved in the...

## A New Primary Dictionary of the English Language ...

Joseph Emerson Worcester - English language - 1902 - 346 pages
...artificer. He-£han'jc, \ a. Relating to mechanism Me-ihan'i-cal, / or mechanics. — Mechanical power», the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw, by means of which force is converted into motion or viceversa. Me-ehän'i-cal-lx, ad. By mechan ical...

## Elements of Physics

Ernest John Andrews, Howard Newell Howland - Physics - 1903 - 464 pages
...than our own strength, as the wind, water power, steam power, etc. There are six simple machines : the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. Sometimes the wheel and axle is considered as a modified form of the lever, and the wedge and screw...

## The Coal and Metal Miners' Pocketbook of Principles, Rules, Formulas, and Tables

Thomas J. Foster - Coal mines and mining - 1905 - 710 pages
...treated, as all machinery, however complicated, is merely a combination of the six elementary forms, viz.: the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw; and these six can be still further reduced to the lever and the inclined plane. They are termed mechanical...