STEAM ENGINE • DICCIONARIO INGLES.COM • Definition of Steam engine

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/stim ˈɛndʒən/ Listen

noun

Steam engine n. An engine moved by steam. Note: In its most common forms its essential parts are a piston, a cylinder, and a valve gear. The piston works in the cylinder, to which steam is admitted by the action of the valve gear, and communicates motion to the machinery to be actuated. Steam engines are thus classified: 1. According to the way the steam is used or applied, as condensing, noncondensing, compound, double-acting, single-acting, triple-expansion, etc. 2. According to the motion of the piston, as reciprocating, rotary, etc. 3. According to the motion imparted by the engine, as rotative and nonrotative. 4. According to the arrangement of the engine, as stationary, portable, and semiportable engines, horizontal and vertical engines, beam engine, oscillating engine, direct-acting and back-acting engines, etc. 5. According to their uses, as portable, marine, locomotive, pumping, blowing, winding, and stationary engines, the latter term referring to factory engines, etc., and not technically to pumping or blowing engines. Locomotive and portable engines are usually high-pressure, noncondensing, rotative, and direct-acting. Marine engines are high or low pressure, rotative, and generally condensing, double-acting, and compound. Paddle engines are generally beam, side-lever, oscillating, or direct-acting. Screw engines are generally direct-acting, back-acting, or oscillating. Stationary engines belong to various classes, but are generally rotative. A horizontal or inclined stationary steam engine is called a left-hand or a right-hand engine when the crank shaft and driving pulley are on the left-hand side, or the right-hand side, respectively, of the engine, to a person looking at them from the cylinder, and is said to run forward or backward when the crank traverses the upward half, or lower half, respectively, of its path, while the piston rod makes its stroke outward from the cylinder. A marine engine, or the engine of a locomotive, is said to run forward when its motion is such as would propel the vessel or the locomotive forward. Steam engines are further classified as double-cylinder, disk, semicylinder, trunk engines, etc. Machines, such as cranes, hammers, etc., of which the steam engine forms a part, are called steam cranes, steam hammers, etc.

Back-acting steam engine, or Back-action steam engine, a steam engine in which the motion is transmitted backward from the crosshead to a crank which is between the crosshead and the cylinder, or beyond the cylinder.

Portable steam engine, a steam engine combined with, and attached to, a boiler which is mounted on wheels so as to admit of easy transportation; used for driving machinery in the field, as thrashing machines, draining pumps, etc.

Semiportable steam engine, a steam engine combined with, and attached to, a steam boiler, but not mounted on wheels.

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Etymology of 'Steam engine'

Collaborative International Dictionary of English 0.48

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"Steam engine" Quotes from Famous Books

... I remember somewhat vaguely, that precisely the same idea might be applied to a carriage or a wagon on the road. A horseless carriage was a common idea. People had been talking about carriages without horses for many years back—in fact, ever since the steam engine was invented—but the idea of the carriage at first did not seem so practical to me as the idea of an engine to do the harder farm work, and of all the work on the farm ploughing was the hardest. Our roads were poor and we had not the habit of getting around. One of the most remarkable ...

— My Life and Work • Henry Ford

... Fire Brigade for hire or purchase, and in the following year (1860) the Fire Brigade took one on hire for one year. This experiment proved so successful, that in 1861 the committee purchased, from Shand and Mason, the fourth steam engine of their construction. This, with one of the two made in 1859, were the only land steam engines that were at work at the Great Tooley Street ...

— Fire Prevention and Fire Extinction • James Braidwood

... thousand pounds to any one who could guess what it was; and though Bendigo Jones's pocket was helped considerably by his percentage of the gate money, his pride suffered considerably when the answers were made public. They ranged from, "Model of the first steam engine when out of control," to "An explosion of a ship at sea," both of which happy efforts gained a bag of nuts. The answer adjudged most nearly correct was sent in by a Fulham butcher, who banked on "Angry gentleman quarrelling with his landlord on quarter-day": which at ...

— No Man's Land • H. C. McNeile

... The cactuses gathered from us whatever tribute they could, and the Babu's disheveled hair swarmed with a whole colony of grasshoppers and fireflies, which, probably, were attracted thither by the smell of cocoa-nut oil. The stout Sham Rao panted like a steam engine. Narayan alone was like his usual self; that is to say, like a bronze Hercules, armed with a club. At the last abrupt turn of the path, after having surmounted the difficulty of climbing over huge, scattered stones, ...

— From the Caves and Jungles of Hindostan • Helena Pretrovna Blavatsky

... overcrowded population of Europe, cramped by man, and priest-ridden, have been brought across the ocean into republican America. They have been placed in this seemingly unpropitious Salt Lake country. There they have founded a city; they have erected factories and mills. The steam engine, the plow, and the sewing machine have aided them; and now, in place of a company of barbarous peasants, ignorant and benighted, and steeped in poverty, you find them transformed into energetic, intelligent citizens, surrounded ...

— Strange Visitors • Henry J. Horn

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