Brake horse power
Horse power Horse" pow`er 1. The power which a horse exerts. [1913 Webster]

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. [1913 Webster]

Note: The power of a draught horse, of average strength, working eight hours per day, is about four fifths of a standard horse power. [1913 Webster]

{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. [1913 Webster]

3. A machine worked by a horse, for driving other machinery; a horse motor. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Horse power — Horse pow er 1. The power which a horse exerts. [1913 Webster] 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 …   The Collaborative International Dictionary of English

  • Indicated horse power — Horse power Horse pow er 1. The power which a horse exerts. [1913 Webster] 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… …   The Collaborative International Dictionary of English

  • Nominal horse power — Horse power Horse pow er 1. The power which a horse exerts. [1913 Webster] 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… …   The Collaborative International Dictionary of English

  • Nominal Horse Power — (deutsch: nominale Pferdestärke) abgekürzt nhp, manchmal auch NHP oder deutsch PSnom, ist eine ehemalige Einheit zur Leistungsbenennung von Dampfmaschinen, später auch von anderen Kraftmaschinen. Inhaltsverzeichnis 1 Einzelheiten 2 Umrechnungen 3 …   Deutsch Wikipedia

  • Shaft Horse Power — Einheit Norm Alte Maße und Gewichte Einheitenname Pferdestärke Einheitenzeichen PS Beschriebene Größe(n) Leistung Größensymbol(e) …   Deutsch Wikipedia

  • brake horsepower — The power delivered to the propeller shaft (main drive or main output) of an aircraft engine. It is the difference between the horsepower delivered by the engine and that consumed by friction. The actual horsepower received by the propeller of an …   Aviation dictionary

  • Brake — (br[=a]k), n. [OE. brake; cf. LG. brake an instrument for breaking flax, G. breche, fr. the root of E. break. See Break, v. t., and cf. {Breach}.] 1. An instrument or machine to break or bruise the woody part of flax or hemp so that it may be… …   The Collaborative International Dictionary of English

  • Brake bar — Brake Brake (br[=a]k), n. [OE. brake; cf. LG. brake an instrument for breaking flax, G. breche, fr. the root of E. break. See Break, v. t., and cf. {Breach}.] 1. An instrument or machine to break or bruise the woody part of flax or hemp so that… …   The Collaborative International Dictionary of English

  • Brake beam — Brake Brake (br[=a]k), n. [OE. brake; cf. LG. brake an instrument for breaking flax, G. breche, fr. the root of E. break. See Break, v. t., and cf. {Breach}.] 1. An instrument or machine to break or bruise the woody part of flax or hemp so that… …   The Collaborative International Dictionary of English

  • Brake block — Brake Brake (br[=a]k), n. [OE. brake; cf. LG. brake an instrument for breaking flax, G. breche, fr. the root of E. break. See Break, v. t., and cf. {Breach}.] 1. An instrument or machine to break or bruise the woody part of flax or hemp so that… …   The Collaborative International Dictionary of English

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