American Library of Useful Knowledge, Volume 1Stimpson and Clapp, 1831 - Science |
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Page 9
... produce a rotatory motion , opened the most extensive use of it for mechanical purposes . It was in reference to the astonishing impulse thus given to mechanical pursuits , that Dr. Darwin , more than forty years ago , broke out in ...
... produce a rotatory motion , opened the most extensive use of it for mechanical purposes . It was in reference to the astonishing impulse thus given to mechanical pursuits , that Dr. Darwin , more than forty years ago , broke out in ...
Page 28
... produce of their soil ! which but for him would have had no existence . What wonders were accomplished by the self- taught architect , Brindley , himself a humble mill - wright ; and yet of such vast compass of thought , that 28 STORY'S ...
... produce of their soil ! which but for him would have had no existence . What wonders were accomplished by the self- taught architect , Brindley , himself a humble mill - wright ; and yet of such vast compass of thought , that 28 STORY'S ...
Page 29
... producing by one only of his numerous inventions , the art of softening steel , so as to admit of engraving , and then hardening it again , so as to retain the fine point and polish of copper - plate , without the constant wear of the ...
... producing by one only of his numerous inventions , the art of softening steel , so as to admit of engraving , and then hardening it again , so as to retain the fine point and polish of copper - plate , without the constant wear of the ...
Page 39
... produce it in new forms , to direct it to new purposes , to multiply its uses , -by means of it to do better , that which human strength could do without its aid , -and to perform that , also , which such strength , unassisted by art ...
... produce it in new forms , to direct it to new purposes , to multiply its uses , -by means of it to do better , that which human strength could do without its aid , -and to perform that , also , which such strength , unassisted by art ...
Page 45
... produce a greater effect than the arm itself ; this is a species of mechanical power . The effect results from a combination of the moving force with the gravity of a heavy body . The limb of a tree is a rude , but powerful instrument ...
... produce a greater effect than the arm itself ; this is a species of mechanical power . The effect results from a combination of the moving force with the gravity of a heavy body . The limb of a tree is a rude , but powerful instrument ...
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