Adcock's Syllabus of a Course of Eight Lectures on Mechanical Philosophy, etcBaines & Newsome, 1832 - 88 Seiten |
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Adcock's Syllabus of a Course of Eight Lectures on Mechanical Philosophy Henry Adcock Keine Leseprobe verfügbar - 2016 |
Häufige Begriffe und Wortgruppen
11 gallons 12 horses 12 tons 20 horses 24 miles Adcock amount angles animal applied average beam boiler boiling point canal carriage circle circular segments circumference coach cold water condense the steam cord cost crank cubic foot cylinder diameter difference diminution distance ditto divide the product draught effective pressure employed evaporated EXAMPLE exert feet per minute friction Hence HENRY MAUDSLAY high pressure horse power inclined plane investigations Latent heat length Lever lifting Liverpool loss manufacturing maximum MECHANICAL PHILOSOPHY mechanical power miles per day miles per hour move Multiply nett opposing forces paddle wheel passengers passes patentee periphery pipes piston Pocket Book pounds power to fulcrum practical produced proprietors pulley pump quantity of water railway RULE Samson engine screw Smeaton square inch stage-coach statement steam power steam-engine strength strength of materials surface tables temperature turnpike-road vapour velocity vessel Watt wedge weight raised weight to fulcrum winch
Beliebte Passagen
Seite 85 - That as they admit of greater breadth of tire than other carriages, and as the roads are not acted on so injuriously as by the feet of horses in common draught, such carriages will cause less wear of roads than coaches drawn by horses. 9. That rates of toll have been imposed on steam carriages, which would prohibit their being used on several lines of road, were such charges permitted to remain unaltered.
Seite 48 - ... descends, so that, when the stroke is completed, it will occupy the entire capacity. The pressure of the steam will then be half of its former amount, or five pounds upon the inch. During the descent of the piston, the pressure of the steam does not suddenly decrease from ten pounds to five ; but it gradually declines, through the successive intervals, until at the final point it yields that force. It is by this gradual expansion and diminution of pressure, that the superior action is produced.
Seite 85 - Committee, — 1. That Carriages can be propelled by steam on common roads at an average rate of ten miles per hour. 2. That at this rate they have conveyed upwards of fourteen passengers. 3. That their weight, including engine, fuel, water and attendants, may be under three tons. 4. That they can ascend and descend hills of considerable inclination with facility and safety. 5. That they are perfectly safe for passengers. 6. That they are not (or need not...
Seite 67 - From which it appears, that only 6 Ibs, of coke per cubic foot of water per hour was consumed, and the evaporation of a cubic foot of water per hour being generally considered the measure of a horse power, the conclusion is, that the boiler is a forty horse boiler, and that the quantity of fuel requisite to work it is 2| cwt.
Seite 48 - ... it expands by degrees until the termination of the stroke, and then exerts half its original . force ; hence an accumulation of effect in proportion to the quantity of steam. Rule. — Divide the length of the stroke by the distance or space into which the dense steam is admitted, and find the hyperbolic logarithm of the quotient, to which add 1, and the sum is the ratio of the gain.
Seite 17 - Divide the weight to be raised by the number of cords leading to, from, or attached to the lower block ; and the quotient is the power required to produce an equilibrium, provided friction did not exist.
Seite 23 - In the first case, the animal exerts not only its muscular force or strength, but, at the same time, a very considerable portion of its weight, or gravity. The power, therefore, from these causes, must be the greatest possible. In the second case, some portion of the power of the animal is withdrawn, to maintain its own progressive motion : consequently, the amount of useful labour varies with the variations of speed. In the third case, the power of the animal is wholly expended in maintaining its...
Seite 17 - ... that distance. From the pressure on the valve in Ibs. subtract the weight of the valve in Ibs. and the effective weight of the lever, multiply the remainder by the distance between the fulcrum and the valve, and divide the product by the distance between the fulcrum and the •weight, and the quotient is the weight in Ibs.
Seite 70 - ... still have a pressure equal to that of the atmosphere, provided that the cylinder in which the expansion takes place have the same temperature as the steam possessed before it began to increase. The most economical mode of employing this principle consists in the application...
Seite 85 - ... 3. That their weight, including engine, fuel, water and attendants, may be under three tons. 4. That they can ascend and descend hills of considerable inclination with facility and safety. 5. That they are perfectly safe for passengers. 6. That they are not (or need not be, if properly constructed) nuisances to the Public. 7. That they will become a speedier and cheaper mode of conveyance than Carriages drawn by horses.