A Treatise of Mechanics, Theoretical, Practical, and Descriptive, Band 2F.C. and J. Rivington, 1815 - 58 Seiten |
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Seite x
... proper just to observe , that the greater part of the con- trivances there described are such as are highly useful in various arts and manufactures , and the most important purposes of human life : among them will be found descriptions ...
... proper just to observe , that the greater part of the con- trivances there described are such as are highly useful in various arts and manufactures , and the most important purposes of human life : among them will be found descriptions ...
Seite 4
... proper for the purpose proposed : and the same will be the case with regard to more complex machines . In some instances a simple lever , or a simple unbent cord , will answer better than any combination : in others it may be highly ...
... proper for the purpose proposed : and the same will be the case with regard to more complex machines . In some instances a simple lever , or a simple unbent cord , will answer better than any combination : in others it may be highly ...
Seite 12
... proper to fashion both sides of the teeth with the same care . It will frequently conduce to the good performance of an en- gine , to make the action of the resisting work unequable , accom- modated to the inequalities of the impelling ...
... proper to fashion both sides of the teeth with the same care . It will frequently conduce to the good performance of an en- gine , to make the action of the resisting work unequable , accom- modated to the inequalities of the impelling ...
Seite 23
... proper to confirm it by a set of ex- periments made with different bodies of exactly the same degree of roughness on their two surfaces . Erp . 1. A body was taken whose flat surface was to its edge as 22 : 9 , and with the same moving ...
... proper to confirm it by a set of ex- periments made with different bodies of exactly the same degree of roughness on their two surfaces . Erp . 1. A body was taken whose flat surface was to its edge as 22 : 9 , and with the same moving ...
Seite 29
... proper to lay the axes of cylinders , & c . not in a groove or concave matrix , as is usual , but upon a horizontal bar with two vertical pieces to keep such axes from rolling off , or , between little wheels called friction wheels ...
... proper to lay the axes of cylinders , & c . not in a groove or concave matrix , as is usual , but upon a horizontal bar with two vertical pieces to keep such axes from rolling off , or , between little wheels called friction wheels ...
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Häufige Begriffe und Wortgruppen
acceleration angle axis axle balance balance spring barometer beam body bottom brass capstan centre centrifugal force circular circular saw circumference cistern clock cock column common construction contrivance cord Coulomb crane crank cylinder descend diameter distance effect elasticity employed engine equal experiments extremity fastened feet fixed fluid frame friction groove gudgeons hole horizontal horizontal plane horse hygrometer inches ingenious invented iron length lever load lower machine machinery manner means mercury mill motion moving force nearly observed passes pendulum piece pinion pipe piston pivots placed planchets plane plate pressure produce proportion pulley pump quantity quicksilver radius raised ratio resistance roller rope round sails screw shaft shew side slide specific gravity spirit of wine steam stroke surface teeth thermometer tion tube turn upper valve vapour velocity vertical vessel vibration water-wheel weight wheel whole
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Seite 45 - ... (7) The load, at a maximum, that sails of a similar figure and position will overcome, at a given distance from the centre of motion, will be as the cube of the radius.
Seite i - 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...
Seite 530 - I have seen the water run like a constant fountain stream forty feet high. One vessel of water rarefied by fire driveth up forty of cold water ; and a man that tends the work is but to turn two cocks, that, one vessel of water being consumed, another begins to force and refill with cold water, and so successively, the fire being tended and kept constant, which the self same person may likewise abundantly perform in the interim, between the necessity of turning the said cocks.
Seite 525 - A way how to make a boat work itself against wind and tide, yea both without the help of man or beast ; yet so that the wind or tide, though directly opposite, shall force the ship or boat against itself; and in no point of the compass...
Seite 534 - ... to keep them sweet, running through several streets, and so performing the work of scavengers, as well as furnishing the inhabitants with sufficient water for their private occasions...
Seite 434 - ... means afforded, ex re nata, and no need of provision beforehand, though much better if foreseen, and means prepared for it, and a premeditated course taken by mutual consent of parties.
Seite 45 - If sails are of a similar figure and position, the number of turns in a given time will be reciprocally as the radius or length of the sail.
Seite vii - Another idea we have of body, is the power of communication of motion by impulse ; and of our souls, the power of exciting motion by thought. These ideas, the one of body, the other of our minds, every day's experience clearly furnishes us with : but if here again we inquire how this is done, we are equally in the dark. For in the communication of motion by impulse, wherein as much motion is lost to one body as is got to the other, which is the...
Seite 527 - A way in one night's time, to raise a bulwark twenty or thirty foot high, cannon-proof, and cannon mounted upon it, with men to overlook, command, and batter a town ; for, though it contain but four pieces, they shall be able to discharge two hundred bullets each hour. 31.
Seite 45 - The effects of the same sails, at a maximum, are nearly, but somewhat less than, as the cubes of the velocity of the wind.