The Principles of Science Applied to the Domestic and Mechanic Arts: And to Manufactures and Agriculture: with Reflections on the Progress of the Arts, and Their Influence on National WelfareMarsh, Capen, Lyon, and Webb, 1841 - 432 páginas |
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Página 28
... cylinder , several feet high , and the question then arises , how to subdivide this into hor- izontal pieces , so as to make as many millstones . For this purpose , horizontal indentations , or grooves , are chiselled out , quite round ...
... cylinder , several feet high , and the question then arises , how to subdivide this into hor- izontal pieces , so as to make as many millstones . For this purpose , horizontal indentations , or grooves , are chiselled out , quite round ...
Página 64
... cylinder C , being made air - tight by the packing at B. When water is driven by the forcing pump G , through the small tube F E , into the cylinder , the piston is rais- ed , slowly , but with great power . pressure below , they will ...
... cylinder C , being made air - tight by the packing at B. When water is driven by the forcing pump G , through the small tube F E , into the cylinder , the piston is rais- ed , slowly , but with great power . pressure below , they will ...
Página 68
... cylinder , and there is no resistance below it , it will be forced down , by a me- chanical pressure of fifteen times as many pounds as there are square inches in its end ; and in this way a mechanical agent , of power limited only by ...
... cylinder , and there is no resistance below it , it will be forced down , by a me- chanical pressure of fifteen times as many pounds as there are square inches in its end ; and in this way a mechanical agent , of power limited only by ...
Página 69
... cylinder , just above the surface of the water in the well , and D another box , or piston , attached to the rod c d , and moved by a power applied at a . Both B and D C b Fig . 14 . C L B D B are so formed , as to prevent the passing ...
... cylinder , just above the surface of the water in the well , and D another box , or piston , attached to the rod c d , and moved by a power applied at a . Both B and D C b Fig . 14 . C L B D B are so formed , as to prevent the passing ...
Página 80
... cylinder , is the movable body to which we have referred . The vapor of water is introduced upon one side of that piston , at the moment that a similar vapor is converted into water on the other side , and the piston moves by the ...
... cylinder , is the movable body to which we have referred . The vapor of water is introduced upon one side of that piston , at the moment that a similar vapor is converted into water on the other side , and the piston moves by the ...
Otras ediciones - Ver todas
The Principles of Science Applied to the Domestic and Mechanic Arts, and to ... Alonzo Potter Sin vista previa disponible - 2019 |
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acid affinity agents agriculture alkali animal applied arts bleaching body called carbonic acid chemical chlorine clay cloth Colchester color combined compound copies copper cotton crops cultivation cylinder earth Eddystone lighthouse effect elective affinity employed enable engine England English engraved equal exert farmer fibres fluid force glass gravity greater hand heat Hence human humic acid hundred husbandry important improvement inclined plane increased industry invention iron Julius Cæsar knowledge labor land laws less lime liquid machine machinery manufacture manure materials means mechanical mechanical philosophy ment metal millions motion mould moving Nature object operation oxygen philosophy piston plants plate pounds present pressure principles printing produce proportion quantity raised rendered rollers salt Scotland side soil solid specific gravity spinning steam stone substances sulphuric acid surface thousand thread tion ture turnips vegetable velocity vessel weaving weft weight wheel wire
Pasajes populares
Página 275 - Americans will pay, which the exhausted state of the continent renders very unlikely ; and because it was well worth while to incur a loss upon the first exportation, in order, by the glut, to stifle in the cradle those rising manufactures in the United States, which the war had forced into existence contrary to the natural course of things.
Página 394 - It has lengthened life; it has mitigated pain; it has extinguished diseases; it has increased the fertility of the soil; it has given new securities to the mariner; it has furnished new arms to the warrior; it has spanned great rivers and estuaries with bridges of form unknown to our fathers; it has guided the thunderbolt innocuously from heaven to earth; it has lighted up the night with the splendor of the day; it has extended the range of the K/man vision; it has multiplied the power of the human...
Página 346 - ... as well lodged as the lord of the town : so well were they contented. Pillows, they said, were thought meet only for women in childbed : as for servants, if they had any sheet above them, it was well : for seldom had they any under their bodies, to keep them from the pricking straws, that ran oft through the canvass, and rased their hardened hides.
Página 350 - C two hundred thousand people begging from door to door^ These are not only no way advantageous, but a very grievous burden to so poor a country. And though the number of them be perhaps double to what it was formerly, by reason of...
Página 394 - The business of a philosopher was to declaim in praise of poverty, with two millions sterling out at usury, to meditate epigrammatic conceits about the evils of luxury, in gardens which moved the envy of sovereigns, to rant about liberty, while fawning on the insolent and pampered...
Página 393 - Two words form the key of the Baconian doctrine, Utility and Progress. The ancient philosophy disdained to be useful, and was content to be stationary. It dealt largely in theories of moral perfection, which were so sublime that they never could be more than theories ; in attempts to solve insoluble enigmas j in exhortations to the attainment of unattainable frames of mind.
Página 362 - ... and thereto a sack of chaff to rest his head upon, he thought himself to be as well lodged as the lord of the lown, so well were they contented. Pillows, said they, were thought meet only for women in child-bed.
Página 27 - In 1826, a steam-loom weaver, about 15 years of age, attending to two looms, could weave twelve similar pieces in a week; some could weave fifteen pieces. In 1833, a steam-loom weaver, from...