Mechanics' Magazine and Journal of Enigneering, Agricultural Machinery, Manufacturing, and Shipbuilding, 2권Knight and Lacey, 1824 |
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2 페이지
... inches ( which space might , perhaps , be re- duced with advantage to three inches , FP © O 2 . O O S or even [ ...
... inches ( which space might , perhaps , be re- duced with advantage to three inches , FP © O 2 . O O S or even [ ...
3 페이지
... good plates , half an inch thick , and bolted in the manner described , so as to allow each bolt ( of of an inch round iron ) to secure 36 square inches , top and bottom , would re- quire a pressure of steam of more than 1,000 lb. B2 ...
... good plates , half an inch thick , and bolted in the manner described , so as to allow each bolt ( of of an inch round iron ) to secure 36 square inches , top and bottom , would re- quire a pressure of steam of more than 1,000 lb. B2 ...
20 페이지
... inch of the mercury in the tube is probably the prognostic of as great a change in the atmosphere as the fall of as many inches in some other parts of the world ; and as the observa- tion is as readily made in one case as the other , it ...
... inch of the mercury in the tube is probably the prognostic of as great a change in the atmosphere as the fall of as many inches in some other parts of the world ; and as the observa- tion is as readily made in one case as the other , it ...
21 페이지
... inches ; the highest range 30-1 nearly , and the lowest about 20-7 , making the -greatest range somewhat near half an inch ; and this observation may be considered as applying to baro- meters on board the ships in the roads and off the ...
... inches ; the highest range 30-1 nearly , and the lowest about 20-7 , making the -greatest range somewhat near half an inch ; and this observation may be considered as applying to baro- meters on board the ships in the roads and off the ...
22 페이지
... inches nearly ; but the average height may be considered , as above stated , 30 inches in general . NO PERPETUAL MOTION . Portsmouth , Web . 28 , 1824 . GENTLEMEN - Having on a former occasion given you some ideas on the subject of ...
... inches nearly ; but the average height may be considered , as above stated , 30 inches in general . NO PERPETUAL MOTION . Portsmouth , Web . 28 , 1824 . GENTLEMEN - Having on a former occasion given you some ideas on the subject of ...
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117 페이지 - Studies serve for delight, for ornament, and for ability. Their chief use for delight, is in privateness and retiring; for ornament, is in discourse; and for ability, is in the judgment and disposition of business...
362 페이지 - Observations on a general iron railway, or land steam conveyance, to supersede the necessity of horses in all public vehicles ; showing its vast superiority in every respect over all the present pitiful methods of conveyance by turnpike roads, canals, and coasting traders ; containing every species of information relative to railroads and locomotive engines.
14 페이지 - In human works, though labour'd on with pain, A thousand movements scarce one purpose gain; In God's, one single can its end produce; Yet serves to second too, some other use.
206 페이지 - ... increasing the quantity of steam. The substance employed is known by the name of comings, being the radicles of barley, produced in the process of malting, which are separated before the malt is sent to market. About a bushel of these is thrown into the boiler, and when the steam is again raised, an immediate effect is visible; for there is not only a plentiful supply of steam to produce the full working speed of the engine, but an excess of it going waste at the safety valve: this singular effect...
123 페이지 - Now the distance of the centre of oscillation from the point of suspension...
113 페이지 - It is a pleasure to stand upon the shore and to see ships tossed upon the sea; a pleasure to stand in the window of a castle and to see a battle and the adventures thereof below; but no pleasure is comparable to the standing upon the vantage ground of truth (a hill not to be commanded, and where the air is always clear and serene), and to see the errors and wanderings and mists and tempests in the vale below; so always that this prospect be with pity, and not with swelling or pride.
176 페이지 - The hive is generally made out of a log of wood from two to three feet long, and eight or ten inches in diameter, hollowed out, and closed at the ends by circular doors, cemented closely to the wood, but capable of being removed at pleasure.
176 페이지 - ... the economy of the interior to more advantage. The honey is not contained in the elegant hexagonal cells of our hives, but in wax bags, not quite so large as an egg.
103 페이지 - ... 6 to 5. The following Table exhibits the relative adhesion of nails of various kinds, when forced into dry Christiana Deal, at right angles to the grain of the wood...
354 페이지 - Indeed, there is no machine or mechanism in which the little that theorists have done is more useless. The honour of bringing it to its present state of perfection, therefore, belongs to a different and more useful class. It arose, was improved and perfected by working mechanics — and by them only...