Workshop Appliances Including Descriptions of the Gauging and Measuring Instruments, the Hand Cutting-tools, Lathes, Drilling, Planing, and Other Machine-tools Used by Engineers

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Longmans, Green, and Company, 1873 - Machine-tools - 312 pages
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Page 2 - The second is of those who labour to extend the power of their country and its dominion among men. This certainly has more dignity, though not less covetousness. But if a man endeavour to establish and extend the power and dominion of the human race itself over the universe...
Page 1 - ... quellers of tyrannies, and the like) they decreed no higher honours than heroic. And certainly if a man rightly compare the two, he will find that this judgment of antiquity was just. For the benefits of discoveries may extend to the whole race of man, civil benefits only to particular pla ces ; the latter last not beyond a few ages, the former through all time.
Page 1 - In the first place then, the introduction of famous discoveries appears to hold by far the first place among human actions ; and this was the judgment of the former ages. For to the authors of inventions they awarded divine...
Page 273 - ... same moment. It may be observed that there are several points of difference between the cam and lever of the single-ended machine and those of the combined machine which we are now discussing. In the present instance the cams. do not act upon the extremities of the longer arms of the levers.—which they could not do without considerable addition to the total length of the machine. Consequently the power obtained is proportionately reduced, although in many cases the much greater economy of space...

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