 ... way of employing the strength of horses. Robertson Buchanan states, that the mechanical effects of men in working a pump, in turning a winch, in ringing a bell, and rowing a boat, are as the numbers 100, 167, 227, and 248. According to Hatchette,...  The Mechanic's Calculator: Comprehending Principles, Rules, and Tables in ... - Page 275by William Grier - 1842 - 308 pagesFull view - About this book
 | William Grier - Mechanical engineering - 1832 - 366 pages
...that a man will produce the greatest mechanical effect in drawing, when the weight was :il/, Ibs., with a velocity of 2 feet per second. But this is...working a pump, in turning a winch, in ringing a bell, am! rowing a boat, are as the numbers 100, 167, 227, and .-18. According to Hatchette, of a man working... | |
 | John Timbs - 1832 - 362 pages
...R. Buchanan, that the same quantities of human labour employed in working a pump, turning a wheel, ringing a bell, and rowing a boat, are as the numbers 100, 167, 227, and 248. The most advantageous manner of applying human strength is in the art of rowing. — The strength of... | |
 | John Timbs - Home economics - 1832 - 332 pages
...R. Buchanan, that the same quantities of human labour employed in working a pump, turning a wheel, ringing a bell, and rowing a boat, are as the numbers 100, 167, 227, and 248. The most advantageous manner of applying human strength is in the art of rowing. — The strength of... | |
 | Francis Lieber, Edward Wigglesworth - Encyclopedias and dictionaries - 1835 - 630 pages
...goods are sus|>ended. According to some experiments of the late Mr. Buchanan, the exertions of a man in working a pump, in turning a winch, in ringing a bell, and in rowing a 'boat, are as the numbers 100, 167, 227, and 248. But those efforts appear to have been... | |
 | William Grier - Mechanical engineering - 1836 - 380 pages
...and that a man will produce the greatest mechanical effect in drawing, when the weight was 31^ Ibs., with a velocity of 2 feet per second. But this is...rowing a boat, are as the numbers 100, 167, 227, and 24A According to Hatchette, of a man working at the cord of a pully to raise the ram of a pile engine... | |
 | Olinthus Gilbert Gregory - 1848 - 572 pages
...comparative efforts of man in different employments, the late Mr. Robertson Buchanan ascertained, that in working a pump, in turning a winch, in ringing a bell, mid rowing a boat, the dynamic results are as the numbers 100, 1G7, 227, and 248. According to the... | |
 | G.P. Putnam & Co - 1852 - 728 pages
...augmented in a higher ratio. According to some experiments of the late Mr. Buchanan, the exertions of a man in working a pump, in turning a winch, in ringing a bell, and in rowing a boat, are as the numbers 100, 167, 227, and 248. A man's force, in fact, is such, that... | |
 | William Grier - Mechanical engineering - 1861 - 316 pages
...that a man will produce the ereatest mechanical effect in drawing, when the weight was 31-g- Ins., with a velocity of 2 feet per second. But this is...strength of men, although it has been found to be the bes1. way of employing the strength of horses. Robertson Buchanan states, that the mechanical effects... | |
 | Ireland commissioners of nat. educ - 1861 - 310 pages
...the kind of work. According to Buchanan, the exertions of a man in working a pump, turning a winch, ringing a bell, and rowing a boat, are as the numbers 100, 167, 227, and 248. CHAPTER H. The Mechanical Powers, 152 The Lever, 156 Application of the Lever to the Measurement of... | |
 | Olinthus Gregory - 1863 - 482 pages
...comparative efforts of man in different employments, the late Mr. Robertson Buchanan ascertained, that in working a pump, in turning a winch, in ringing a bell, and rowing a boat, the dynamic results are as the numbers 100, 167, 227, and 248. According to the interesting experiments... | |
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