Show THIS EXPLAINS HORSEPOWER HORS Unit of Measure Was In- In Invented Invented In Invented vented in 1765 by James Watt To get a clear Idea ot of the term ml hOI sepo l ef as It applies to 1 power po producing mechanisms we wc must t KO go back to the year 1765 ihen when hen James Walt alt p perfected 1 his hla steam engine to a degree that made It Il practical decla declares res I E I E J A ADe De De dera chief engineer r tor the B ick Motor t r rI company Lik Like all I continues att found a a greet great deal of o opposition to his hia efforts and In order to stimulate sales salea he that list t found und It necessary to edu- edu educate educate edu educate cate th the people to the th value ot of otI ohis I hIs Invention Intention Watt knew that he h would 1 have to find some aoma way nay ay ot of o accurately the power cr of hi his steam engine against the power of oC horses because the mine min owners store aero not familiar with th any other form torm of ot po power poster er Ilia Ills first task taik therefore was to find out Just lust how much power the It average o work worle horse hore hors l lor or In other words worde jut just how how much stork ork a horse torso could do In ill a 8 a certain length of or time II U UIT s IT OF OP 5 SURE 11 att att conducted a long lone series erles ot of tests and na as a 3 result he ho I ascer-I ascer ascertained lamed that tho the si erac work worle workhorse workhorse I horse could lift a w of pounds t two 0 and a a half halt miles hour for ten horns a a day da To et ec ex express press Iress this In other terms ho he found that the tha It horse horae could do work equivalent to lifting pounds one ono foot Coot In one minute 3 POU DS POU ns The The term horsepower there there- therefore therefore fore tore means mean the amount of po ei I required ed io to lift pounds one foot In one on minute It haa has exact exact- exactly ly Iy the same samo meaning whether ap applied A ap- ap applied plied to a team steam engine a a gas caa en- en engIne engine eln cn-eln gIne or an electric motor Tho The deIce de Ice most mot commonly used In determining actual horse horse- horsepower horsepower power po of a 0 motor Is la called the tho dynamometer This word Is a combInation of ot the th two tao 0 words word a dy dy namo and meter It means as ts as Its name namo nam Indicates a a measuring d namo In In testing an automobile for tor actual horsepower the th gasoline motor and the electric dynamo are together The Th gasoline mot motor or li is I th then n started taTted and Its Ita ca- ca ca capacity 11 for or work Is la determined by suitable resistance and measuring instruments Instrument I 1 Ii i fURE ol horsepower r Is mea mea- measured measured In Malts natta one mechanical being equal to watts atts of ot electric current In other ord 7 watts walla Is equal to foot pounds per minute In the dynamometer il tl test all consideration factors ar ate taken token Into tion Tho The motor Is I put on a stand and connected up just lust as lIa It Is when In the car |