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Horse power   Listen
noun
Horse power  n.  
1.
The power which a horse exerts.
2.
(Mach.) A unit of power, used in stating the power required to drive machinery, and in estimating the capabilities of animals or steam engines and other prime movers for doing work. It is the power required for the performance of work at the rate of 33,000 English units of work per minute; hence, it is the power that must be exerted in lifting 33,000 pounds at the rate of one foot per minute, or 550 pounds at the rate of one foot per second, or 55 pounds at the rate of ten feet per second, etc. Note: The power of a draught horse, of average strength, working eight hours per day, is about four fifths of a standard horse power.
Brake horse power, the net effective power of a prime mover, as a steam engine, water wheel, etc., in horse powers, as shown by a friction brake. See Friction brake, under Friction.
Indicated horse power, the power exerted in the cylinder of an engine, stated in horse powers, estimated from the diameter and speed of the piston, and the mean effective pressure upon it as shown by an indicator. See Indicator.
Nominal horse power (Steam Engine), a term still sometimes used in England to express certain proportions of cylinder, but having no value as a standard of measurement.
3.
A machine worked by a horse, for driving other machinery; a horse motor.






Collaborative International Dictionary of English 0.48








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"Horse power" Quotes from Famous Books



... added another iron foundry to his smaller shops; he obtained many good engineering tools, and in course of time he began to make steam-engines for agricultural purposes. These were used in lieu of horse power for thrashing corn, and performing several operations that used to be done by hand labour in the farmyards. Orders came in rapidly, and before long the chimneys of Douglass's steam-engines were as familiar in the country round Edinburgh as corn stacks. All the large farms, especially in Midlothian ...
— James Nasmyth's Autobiography • James Nasmyth

... stone chipped roughly into shape, and the age of stone even-edged and smoothly polished. There was really no gap worth speaking of. The Paleolithic age changed as suddenly into the Neolithic as the age of horse power changed into that of steam and electricity, allowance being always made for the slower transmission of a new intelligence in the days when men lived alone and when a hundred years in the diffusion of knowledge ...
— The Story of Ab - A Tale of the Time of the Cave Man • Stanley Waterloo

... indicative of progress in locomotion. To complete the series, and for the purpose of historical record, subjoined is a picture of the first Motor vehicle used (1904-1905) in Bristol for the rapid transport of His Majesty's Mails by road. No doubt, in process of time, this handy little 5-horse power car, built to a Bristol Post Office design, to carry loads of 3-1/2 cwt., and constructed by the Avon Motor Company, Keynsham, near Bristol, will have numerous fellow cars darting about in the roads and crowded thoroughfares of Bristol for the collection of letters and ...
— The King's Post • R. C. Tombs

... England set invention working on a definite, continuous {8} object. As the shafts were sunk to lower and lower levels, it became impossible to pump the water out of the mines by horse power, and the aid of steam was sought. Just at the close of the seventeenth century Savery devised the first commercial steam-engine, or rather steam fountain, which applied cold water to the outside of the cylinder to condense the steam ...
— The Railway Builders - A Chronicle of Overland Highways • Oscar D. Skelton

... an eternity, they were ready to start once more. Peggy lost no time in taking to the air. With her every cylinder developing its full horse power, the aeroplane sky-rocketed upward at a rate that made Wandering William ...
— The Girl Aviators on Golden Wings • Margaret Burnham

... The latter vessel was entirely iron-built, with the exception of her decks; her bottom was 1/4 of an inch in thickness, her sides from 3/18 to 1/8 of an inch. She was seventy feet in length, 13 in beam, 6-1/2 in depth, and had an engine of 16-horse power. The great inconvenience apprehended from the vessel was, that from her construction, the crew would suffer much from heat; but so far from this having been the case, the iron, being an universal conductor, kept her constantly ...
— Life and Travels of Mungo Park in Central Africa • Mungo Park

... soon learn to accommodate himself to his narrow quarters, and will work easily in a ditch 2-1/2 feet deep, having a width of less than afoot at the bottom; of course there must be a way provided for him to come out at each end. Deeper than this there is no economy in using horse power, and even for this depth it will be necessary to use a plow having only ...
— Draining for Profit, and Draining for Health • George E. Waring

... taken to make the circumstances, under which the trials took place, exactly alike for both the rubber and the iron tires. The experiments were performed with an Aveling and Porter six-horse power road engine, built in the Royal Engineers' establishment. The weight of the engine, without rubber tires, was 11,225 pounds; with rubber tires, it weighed 12,025 pounds. Without rubber tires it drew 2.813 times its ...
— Scientific American, Volume XXIV., No. 12, March 18, 1871 • Various

... of Mr. William Jones, who first worked the Raneegunj coal-field, suggested the remedy in the employment of a steam-engine. One of twelve-horse power was ordered from Messrs. Thwaites and Rothwell of Bolton. This was the first ever erected in India, and it was a purely missionary locomotive. The "machine of fire," as they called it, brought crowds of natives to the mission, whose ...
— The Life of William Carey • George Smith

... industries of our people. The first built in Ohio ran from Lake Erie or the Ohio River, north or south into the center of the state. Among them was the Sandusky & Mansfield road, originally a short line from Sandusky to Monroeville, intended to be run by horse power. It was soon changed to a steam road, the power being furnished by a feeble, wheezing engine, not to be compared with the locomotive of to-day. It was then extended to Mansfield, and subsequently to Newark, but was not completed ...
— Recollections of Forty Years in the House, Senate and Cabinet - An Autobiography. • John Sherman

... of three small steamers, thirty horse power, and a dredging boat. Two of the steamers are kept for the traffic between Fuma-Cina and the custom-house at Rome. The other is employed on the upper part of the river, starting from the Ripetta in Rome for the ...
— Pilgrimage from the Alps to the Tiber - Or The Influence of Romanism on Trade, Justice, and Knowledge • James Aitken Wylie

... travelling through that state, a few years since, on my way from Providence to New London, at a time when a new road had just been opened. It was on a Sunday, and the stage—a four-horse power, you must know—had never yet run through on the Lord's-day. Well, we might be, as it were, off here at right angles to our course, and there was a short turn in the road, as one would say, out yonder. As we hove in sight of the turn, I saw a chap at the mast-head ...
— Homeward Bound - or, The Chase • James Fenimore Cooper

... which we can excel our American cousins), and lying near the great centres of population too. Let me give you three examples. Within easy reach of Vancouver on the west coast there is at least 350,000 horse power, of which 75,000 is now in use. Winnipeg, the metropolitan centre of Canada, where more than in any place else can be heard the heart beat of the Dominion, has 400,000 horse power available, of which she now uses 50,000. Toronto lies within reach ...
— The Major • Ralph Connor

... in it of more value than the year's subscription. In No. 9, present volume, you illustrated a plan for setting steam boilers. I was much pleased with it and showed it to a friend of mine who was about re-setting a 60-horse power boiler in his machine shop. He adopted the plan. Four week's use of the improved furnace proves all you claimed for it. My friend will be one of your new subscribers. I shall, in a few days, re-set my 15-horse power boiler according to the plan. Every live mechanic ...
— Scientific American, Vol. 17, No. 26 December 28, 1867 • Various

... iv quite an' iligant luxury. Wud ye like a line on me daily routine? Well, in th' mornin' a little spin in me fifty-horse power 'Suffer-little-childher,' in th' afthernoon a whirl over th' green wathers iv th' bay in me goold-an'-ivory yacht, in th' avenin' dinner with a monkey or something akelly as good, at night a few leads out iv th' wrong hand, some hasty wurruds an' so to bed. Such is th' spoortin' ...
— Observations by Mr. Dooley • Finley Peter Dunne

... consumption of sugar and bade fair to meet the whole demand ere long.[43] The reduction of protective tariff rates, coming simultaneously with a rise of cotton prices, then checked the spread of the sugar industry, and the substitution of steam engines for horse power in grinding the cane caused some consolidation of estates. In 1842 accordingly, when the slaves numbered 50,740 and the sugar crop filled 140,000 hogsheads, the plantations were but 668.[44] The raising of the tariff anew in that year increased the plantations to 762 ...
— American Negro Slavery - A Survey of the Supply, Employment and Control of Negro Labor as Determined by the Plantation Regime • Ulrich Bonnell Phillips

... threshing was done in the fields with a traction engine. My uncle David came no more to help us harvest. He had almost passed out of our life, and I have no recollection of him till several years later. Much of the charm, the poetry of the old-time threshing vanished with the passing of horse power and the coming of the nomadic hired hand. There was less and less of the "changing works" which used to bring the young men of the farms together. The grain was no longer stacked round the stable. Most ...
— A Son of the Middle Border • Hamlin Garland

... ligneous portions of the plants and setting the latter free for other uses. The power thus silently exerted is enormous; for every ton of carbon separated in twelve hours necessitates an expenditure of energy represented by at least 1,058 horse power, but the action is spread over an enormous area of leaf surface, rendered necessary by the small proportion of carbonic acid contained in the air, by measure only 1/2000 part, and hence the action is silent and imperceptible. ...
— Scientific American Supplement, No. 441, June 14, 1884. • Various

... Scotchmen, who claimed to understand Arkwright's mechanism, were employed to make spinning machines, and about the same time another attempt was made at Beverly. In both instances the experiments were encouraged by the State and assisted with grants of money. The machines, operated by horse power, were crude, and the product was irregular and unsatisfactory. Then three men at Providence, Rhode Island, using drawings of the Beverly machinery, made machines having thirty-two spindles which worked indifferently. The attempt to run them by water power failed, and they were ...
— The Age of Invention - A Chronicle of Mechanical Conquest, Book, 37 in The - Chronicles of America Series • Holland Thompson

... that M. Gaston Tissandier constructed a dirigible in any way worthy of the name. It was operated by a motor driven by a bichromate of soda battery. The motor weighed 121 lbs. The cells held liquid enough to work for 2-1/2 hours, generating 1-1/3 horse power. The screw had two arms and was over nine feet in circumference. Tissandier ...
— Marvels of Modern Science • Paul Severing

... water-power, supplied by damming the Hockanum River. Here, beside grinding grain and plaster, was set up the first wool-carding machine in the state, and, it is believed, in the country."[6] Samual Mayall in Boston, about 1788 or 1789, set up a carding machine operated by horse power. In 1791 he moved to Gray, Maine, where he operated a shop for wool carding and cloth dressing.[7] Of the machines used at the Hartford Woolen Manufactory, organized in 1788, a viewer reported he saw "two carding-engines, working by water, of a very inferior ...
— The Scholfield Wool-Carding Machines • Grace L. Rogers

... illustrated is of 6 horse power. The motive cylinder, CC', is bolted to the extremity of the frame, A. Upon this latter is fixed a column, B, which carries a working beam, E. This latter transmits the motion of the piston, P, to the shaft, D. A pump, G, placed within the frame, forces a certain ...
— Scientific American Supplement, No. 623, December 10, 1887 • Various

... was to mix quicklime with the gum. In order to work the compound thoroughly, he used to carry the vessel containing it, on his shoulder, to a place three miles distant from his laboratory, where he had the use of horse power. The lime, however, utterly destroyed the gum, and nothing came ...
— Great Fortunes, and How They Were Made • James D. McCabe, Jr.

... age of concentration or specialization of energy. The problem of the day is to get ten-horse power out of an engine that shall occupy the space of a one-horse power engine, and no more. Just so society demands a ten-man power out of one individual. It crowns the man who knows one thing supremely, and can do it better than ...
— The True Citizen, How To Become One • W. F. Markwick, D. D. and W. A. Smith, A. B.

... words enlightened him unpleasantly. With some severity—"Kakunai, does this horse talk?" Thunderstruck Kakunai did not know what answer to make. Kage could bite. His master could do worse, if enough angered. He hesitated—"Hai!" Quoth Shu[u]zen—"'Hai' is no answer. Has the horse power of human speech?" Kakunai put his hand to his head, then turned to Kage, who was obstinately silent. He gave him as hard a blow on the neck as he dared, without result. "The Tono Sama has heard the tale; as has this Kakunai. His head in a whirl, Kakunai knows not whether it ...
— Bakemono Yashiki (The Haunted House) - Tales of the Tokugawa, Volume 2 (of 2) • James S. De Benneville

... guns, and a section plan showing arrangement of armour, of one of the big new ships which has been completed for the Grand Fleet. Below we have the number and calibre of the guns, the thickness and extent of the armour, the length, breadth, and depth of the vessel, her tonnage, her horse power, and her estimated speed. Everything is correct except the speed, which I happen to know is considerably greater than the ...
— The Lost Naval Papers • Bennet Copplestone

... adopted provides for a single row of large engines and electric generators, contained within an operating room placed beside a boiler house, with a capacity of producing, approximately, not less than 100,000 horse power when the machinery is being operated at ...
— The New York Subway - Its Construction and Equipment • Anonymous

... By horse power.—It does not fall within the scope of this book to describe water-wheels worked by cattle, or elaborate mechanism of any kind; I therefore only mention under this head, that the Tartars sometimes draw water from their wells, of ...
— The Art of Travel - Shifts and Contrivances Available in Wild Countries • Francis Galton

... he shook his head. "Come, come, Captain!" he protested, "be reasonable. To get ten or twelve knots out of this schooner you would require a steam engine of some eighty to a hundred horse power." ...
— Turned Adrift • Harry Collingwood

... also put in a cracking plant and buy the nuts by the ton or carload, if necessary, directly from the growers on the Pacific Coast or through their organization, the Northwest Nut Growers. I located a satisfactory machine for the purpose, which required about 7 horse power to run. Since this was during the war and no motors of the right speed and power were available at the time, I set up my own generating plant, using a 25 kilowatt generator driven by a Diesel engine which generated direct current so that I could use direct current motors which I already had among ...
— Northern Nut Growers Association Report of the Proceedings at the 41st Annual Meeting • Various

... me! you are never satisfied! If I write too lightly, you say it looks as if a spider had scampered over the paper with inky legs; if I bear on harder, you ask me how much horse power I have put on to make such heavy strokes. I don't know what to do! I ...
— The Big Nightcap Letters - Being the Fifth Book of the Series • Frances Elizabeth Barrow

... in this respect the metropolis failed to hold its own. For, while the substitution of electricity for horse power has gone rapidly forward in the small cities of the West and South, New York has suffered an extension of its slow, filthy, and pest-breeding horse-car transportation. There can be little doubt that the unspeakable state of the streets contributed largely to the deadliness of ...
— The Arena - Volume 4, No. 21, August, 1891 • Various

... and five and one-third feet deep to the structural deck. The strength and safety of the hull are increased by five water-tight compartments. Propulsion is effected by a pair of modern stern paddle-wheel engines capable of being worked up to over two hundred and fifty horse power, giving her a speed of ten miles an hour. She has stateroom accommodation for twenty-two passengers, draws three and a half feet of water aft, and eats up half a cord of wood an hour. She will carry to the northern posts their trading-goods ...
— The New North • Agnes Deans Cameron

... Kentucky flanked at the base by the railway terrace. Numerous ferries connect the Kentucky railway stations with the eastern bank; one, which we saw just above New Richmond, O. (446 miles), was run by horse power, a weary nag in a tread-mill above each side-paddle. Although Kentucky has the railway, there is just here apparent a greater degree of thrift in Ohio—the towns more numerous, fields and truck-gardens more ample, ...
— Afloat on the Ohio - An Historical Pilgrimage of a Thousand Miles in a Skiff, from Redstone to Cairo • Reuben Gold Thwaites

... in this age of the world that fairies got an idea riveted into their heads which nothing, not even hammers, chisels or crowbars can pry up. Neither horse power, nor hydraulic force nor sixteen-inch bombs, nor cannon balls, nor ...
— Welsh Fairy Tales • William Elliot Griffis

... farm from the produce of the home orchards has within the last few years been to a large extent given up, and, as in Germany and many parts of France, farmers now sell their fruit to owners of factories where the making of cider and perry is carried on as a business of itself. In these hand or horse power is superseded by steam and sometimes by electricity, as in the factory of E. Seigel in Gruenberg, and the old-fashioned appliances of the farm by modern mills and presses capable of turning out large quantities of liquor. The clearing of the juice, too, which used ...
— Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 - "Chitral" to "Cincinnati" • Various

... looked at the coat, and then the coat seemed to look at me. Then I lifted it up and put it down again, and sent out for three-ha'porth of gin. Then I tackled the blooming thing again. One arm went in with a ten-horse power shove. Next I tried the other. After no end of fumbling I found the sleeve. "In you go!" I said to my arm, and in he went, only it happened to be the breast-pocket. I jammed, the pocket creaked, but I jammed hardest, and in went my fist, ...
— Punch, or the London Charivari, Vol. 99, October 4, 1890 • Various

... might fill my letters to you with accounts received from others, but as I am aware of the risk which I run in so doing, I shall furnish you with no details but those which come under my own immediate observation. To return to the rice mill: it is worked by a steam-engine of thirty horse power, and besides threshing great part of our own rice, is kept constantly employed by the neighbouring planters, who send their grain to it in preference to the more distant mill at Savannah, paying, of course, the same percentage, which makes it a very profitable addition to the estate. Immediately ...
— Journal of a Residence on a Georgian Plantation - 1838-1839 • Frances Anne Kemble

... morning of the 15th of April I left Prague, and rode for fourteen miles in the mail-carriage, as far as Obristwy on the Elbe, at which place I embarked for Dresden, on board the steamer Bohemia, of fifty-horse power, a miserable old craft, apparently a stranger to beauty and comfort from her youth up. The price charged for this short passage of eight or nine hours is enormously dear. The travellers will, however, soon have their revenge on the extortionate proprietors; a railroad ...
— Visit to Iceland - and the Scandinavian North • Ida Pfeiffer

... opened with a real locomotive while the Lexington and Ohio road first used horse power. But it must also be remembered that the locomotive of the Pontchartrain Railroad was built in Stourbridge, England, while the first locomotive for the Lexington and Ohio road was invented and built in Lexington by two Lexington men, Thomas Barlow and Joseph Bruen; ...
— A Pioneer Railway of the West • Maude Ward Lafferty

... steam-engine, who has not viewed the machinery of some of our mining districts, where it is employed on a scale of magnitude and power unequalled elsewhere. In Cornwall,[5] especially, steam-engines may be seen working with a thousand horse power, and capable (according to a usual mode of estimating their perfection as machinery) of raising nearly 50,000,000 pounds of water through the space of a foot, by the combustion of a single bushel of coals. No Englishman, especially if destined to public life, can fitly ...
— The Mirror of Literature, Amusement, and Instruction, No. 333 - Vol. 12, Issue 333, September 27, 1828 • Various

... wood, is to be seen in the doors. This Galerie is named after its proprietor, M. Vero Dodat, an opulent charcutier, (a pork-butcher) in the neighbouring street; but we are unable to inform the reader by how many horse power his sausage-chopping machine ...
— The Mirror of Literature, Amusement, and Instruction - Vol. XIX. No. 541, Saturday, April 7, 1832 • Various

... his horses along to use on the portages, and there'll be more than one of them. It would take a lot of men to track one of these boats up the bank and along a mile or so of dry ground. They tell me that he uses rollers and pulls the boats by horse power. So, as that is one more example of the way the brigade gets its goods north, we'll use that, if only for the sake of ...
— Young Alaskans in the Far North • Emerson Hough

... they never deeply interest us, unless they lift a corner of the curtain, or betray never so slightly their penetration of what is behind it. 'Tis the charm of practical men, that outside of their practicality are a certain poetry and play, as if they led the good horse Power by the bridle, and preferred to walk, though they can ride so fiercely. Bonaparte is intellectual, as well as Csar; and the best soldiers, sea-captains, and railway men have a gentleness, when off duty; a good-natured ...
— The Atlantic Monthly, Vol. I, No. 1, Nov. 1857 • Various

... followed me down stairs. He got in and waved his hand. With a spring the car leaped from the kerb—no other word will describe the starting of that car. I suppose it must have been at least a hundred horse power. In a flash it was round the corner and gone. I climbed into my cab and made my humble way to Liverpool Street, eventually reaching Wigborough, and taking up the daily ...
— Aliens • William McFee

... considered insufficient, however, for supplying two furnaces on the blast principle, each of which was 45 feet high, 8 feet diameter at the top, 14 feet diameter at the boshes, and 4 feet 6 inches diameter at the hearth; hence another steam-engine of 80 horse power was erected in 1849, but in consequence of a depression in the iron trade, and other causes, the two furnaces were not then worked together. A few years after the decease of Mr. Montague, in 1847, Mr. James purchased all his interest in the works, ...
— The Forest of Dean - An Historical and Descriptive Account • H. G. Nicholls

... time there were no mills to grind the corn, and it was pounded into meal for bread with a heavy wooden pestle in a mortar made by hollowing out some tough-grained log. The first mills were horse power; then small water-power mills were put up on the streams, and in the larger rivers boats were anchored, with mill wheels which the rapid current turned. But the stills were plentier than the mills, and as much corn ...
— Stories Of Ohio - 1897 • William Dean Howells

... Spray, North Carolina, was experimenting in an attempt to prepare metallic calcium, for which purpose he employed an electric furnace operating on a mixture of lime and coal tar with about ninety-five horse power. The result was a molten mass which became hard and brittle when cool. This apparently useless product was discarded and thrown in a nearby stream, when, to the astonishment of onlookers, a large volume of gas was immediately liberated, ...
— Oxy-Acetylene Welding and Cutting • Harold P. Manly

... either trained in the colleges or received from them the working principles which were essential to their success. These human inventions are of priceless value to the people. The steam engine has contributed greatly to human welfare. It represents, in the United States alone, 20,000,000 horse power in the form of locomotives, or the steam power of 300 horses for each thousand inhabitants. Besides all this, 6,000,000 horse power in stationary steam engines manufacture goods for us. They give the vast force which ...
— Colleges in America • John Marshall Barker

... leaves us about seven hundred thousand to take care of. There should be no difficulty in getting that out of the sale of lands we will develop. However," he added evenly, "we needn't worry about it just now. And, by the way, I had an inquiry yesterday for forty thousand horse power. Of course we haven't got it to spare, at least not at the moment. Now will you excuse ...
— The Rapids • Alan Sullivan

... doing great things. By-and-by, when his creditors grew pressing and it was necessary for him to earn money in some way, he found that it was no trouble to him to write; so he wrote with a spasmodic kind of industry, but a forty-horse power when he chose to exercise it. For a long time he had no thought of winning name or fame in literature. It was only of late it had dawned upon him that he had wasted labour and talent, out of which a wiser man would have created for himself a reputation; and that reputation is worth something, ...
— Fenton's Quest • M. E. Braddon

... Reuben, behold a son Reynard, firm judge Reynold, judging power Richard, stern king Robert, bright in fame Roderick, famous king Rodolph, wolf of fame Rodolphus, famous wolf Roger, spear of fame Roland, fame of the land Rollo, wolf of fame Rolph, wolf of fame Ronan, seal Ronald, judge power Roswald, horse power Rowland, fame of the land Roy, red Rufus, red-haired Rupert, bright fame Sampson, splendid sun Samuel, asked of God Saul, longed for Saunders, helper of men Sayer, conquering army Seabert, bright victory Seaforth, peace victory ...
— Cole's Funny Picture Book No. 1 • Edward William Cole

... by dead walls emblazoned with the finest examples of the lithographer's art, and by half-page advertisements in the Daily Evening News. On the contrary, it was a shabby little wagon show, which, coming overland on short notice, rolled into town under horse power, and set up its ragged and dusty canvases on the vacant lot across from ...
— From Place to Place • Irvin S. Cobb

... crime—almost all have homes—the amount of agricultural labor does not fluctuate—the farms are not cultivated by the spade and hoe, but are large enough to justify a system of enlarged agricultural operations by the aid of horse power. The result is that more is saved, and the proceeds more equally distributed between capital and labor, or ...
— Cotton is King and The Pro-Slavery Arguments • Various



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