 Buchanan that the same quantity of human labour employed in working a pump, turning a winch, 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 act of rowing.  Mechanics, hydrostatics, pneumatics, optics - Page 54by Ireland commissioners of nat. educ - 1861Full view - About this book
 | 1850 - 414 pages
...some experiments made by Mr. Robertson Buchanan, it was ascertained that the labour of a man employed in working a pump, turning a winch, ringing a bell, and rowing a boat, might be represented respectively by the numbers 100, 167, 227, and 248. Hence, it appears that the... | |
 | Thomas Ewbank - 1851 - 646 pages
...ii, liv. 4. From some ex periments made by Mr. Robertson Buchanan, it was ascertained that the labor of a man in working a pump, turning a winch, ringing a bell, and rowing a boat, might be represented respectively by the numbers, 100, 167, 227, and 248 ; hence it appears that the... | |
 | G.P. Putnam & Co - 1852 - 728 pages
...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 he can raise 10 Ibs. 10 ft. in a second, for -10 hours in a day,... | |
 | Dionysius Lardner - 1858 - 438 pages
...which a man can walk without a load, for any continuance. The average powers exerted by a man employed in working a pump, turning a winch, ringing a bell, and rowing a boat are, according to Mr. Buchanan, in the proportion of the numbers I 00, 167, 227, and 248. It follows from... | |
 | William Grier - 1861 - 316 pages
...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, of a man working at the cord of a pulley to raise the ram of a pile engine... | |
 | Dionysius Lardner - 1866 - 428 pages
...which a man can walk without a load, for any continuance. The average powers exerted by a man employed in working a pump, turning a winch, ringing a bell, and rowing a boat are, according to Mr. Buchanan, in the proportion of the numbers l00, 167, 227, and 248. It follows from... | |
 | Thomas Ewbank - 1876 - 1228 pages
...ii. liv. 4. From some experiments made by Mr. Robertson Buchanan, it was ascertained that the labor of a man in working a pump, turning a winch, ringing a bell, and rowing a boat, might be represented respectively by the numbers, 100, 167, 227, and 248; hence it appears that the... | |
 | Dionysius Lardner - 1877 - 580 pages
...ifrom 6^56 to 9-84 3-66 Guenyveau 4'47 from 4-47 to 670 The average powers exerted by a man employed in working a pump, turning a winch, ringing a bell, and rowing a boat are. according to Mr. Buchanan, in the proportion of the numbers 100, 167, 227, and 248. It follows from... | |
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