 | William Newton - 1822 - 380 páginas
...Chremnitz, (each stroke occupying about three minutes,} .......... 9 = 3 " But the water-mill, which is the usual machine employed, even in its most improved...decided superiority over every species of animal labour. its effective force when employed ifl the Working of pumps. It has been already stated, that the machine... | |
 | 1822 - 386 páginas
...machinery in the beginning of the sixth century. The use of this species of mechanic force is, howeverj principally limited to the grinding of corn, the pressing...possesses over mere pneumatic or hydraulic machinery, we-will now examine 3 r i 264 Review of New Publications. its effective force when employed in the... | |
 | Charles Frederick Partington - 1822 - 474 páginas
...thirty-four men ; twenty-five square feet of canvas performing the average work of a day labourer. A mill of this magnitude seldom requires the attention...labour. To shew, however, the great advantage the Steam Engine, even in its rudest state, possesses over mere pneumatic or hydraulic machinery, we will... | |
 | Charles Frederick Partington - 1826 - 356 páginas
...of thirty-four men ; twentyfive square feet of canvas performing the average work of a day labourer. A mill of this magnitude seldom requires the attention...animal labour. To shew, however, the great advantage which the Steam Engine, even in its rudest state, possesses over mere pneumatic or hydraulic machinery,... | |
 | Thomas Curtis - 1829 - 842 páginas
...thirty -four men ; twenty-five square feet of canvas performing the average work of a day laborer. A mill of this magnitude seldom requires the attention...a decided superiority over every species of animal labor. 11. To show, however, the great advantage which the steam engine, even in its rudest state,... | |
 | Zachariah Allen - 1833 - 440 páginas
...the work of 34 men, twenty-five square (eet of canvass performing the average work of a day laborer. A mill of this magnitude seldom requires the attention...of more than two men, and it will thus be seen that after making allowance for irregularity, wind possesses a decided superiority over every species of... | |
 | 1834 - 436 páginas
...performing the average work of a day labore.-. A mill of this magnitude seldom requires the attention ol more than two men ; and it will thus be seen that,...a decided superiority over every species of animal labor. The following very important errors have frequently been made by mathematicians and practical... | |
 | Charles Frederick Partington - 1836 - 390 páginas
...of thirty-four men, twentyfive square feet of canvass performing the average work of a day labourer. A mill of this magnitude seldom requires the attention...animal labour. To shew, however, the great advantage which the steam engine, even in its rudest state, possesses over mere pneumatic or hydraulic machinery,... | |
 | 1837 - 486 páginas
...hours per day. This is equivalent to the work of thirty-four men, twenty-five square feet of canvass performing the average work of a day-labourer. A mill...decided superiority over every species of animal labour. The following very important errours have frequently been made by mathematicians and practical mechanicks,... | |
 | 1837 - 488 páginas
...hours per day. This is equivalent to the work of thirty-four men, twenty-five square feet of canvass performing the average work of a day-labourer. A mill...possesses a decided superiority over every species of anunal labour. The following very important errours have frequently been made by mathematicians and... | |
| |
... pounds, two hundred and thirty-two feet, in a minute ; and of working, on an average, eight hours per day. This is equivalent to the work of thirty-four men; twenty-five square feet of canvas performing the average work of a day-labourer. 
