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Is a feaion of a machine for ralfing water a few feet high by the power of the wind for 

 ihe purpofe of draining nioraffes, or of watering lands on a higlier level. 



It confifts of a windmill fail placed horizontally like that of a fmoak-jack, furrounded 

 by an oftagon tower; the diverging rays of this tower, a b, a b, may confift of two-i'nch- 

 deals only, if on a fmall fcale, or of brick-work if on a larger one. Thefe upright pil- 

 lars are conneded together by oblique horizontal boards as fliewn at A B, by which boards 

 placed horizontally from pillar to pillar, in refpe^ to their length, but at an angle o£ 

 about 45 degrees In refped to their breadtli, fo as to form a complete odagon Including 

 the horizontal windmill fail near the top of it ; the wind as It ftrlkes agalnft any of them^^ 

 from whatever quarter It comes, is bent upwards and then ftrikes agalnfl the horizontal 

 wind-fail, Thefe horizontal boards, which form the fides of the odagon, may either be 

 fixed in their fituatlons, or be made to turn upon an axis' a little below their centres of- 



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gravity, fo as to clofe themfelves on that fide of the odagon tower mod diftant from the 

 wind. 



It may be fuppofed that the wind thus refleaed would lofe confiderably of Its power be- 

 fore it fi:rlkes on the wind-fail, but on fixing a model of fuch a machine on the arm of a 

 long whirling lever, with proper machinery to count the revolution of the wind fail, when 

 thus Included In a tower and moving horizontally; and then when moved vertically as It 

 was whirled on the arm of the lever with the fame velocity, it was found on many trials 

 by Mr. Edgeworth of Edgeworth Town In Ireland, and by myfelf, that the wind by being 

 thus reverted upwards by a fixed planed board did not feem to lofe any of its power. And 

 as the height of the tower may be made twice as great as the diameter of the fail, there is 

 reafon to conclude that the power of this horizontal wind-fail may be confiderably greater, 

 than If the fame fail was placed nearly vertically oppofed to the wind in the ufual man- 



ner. 



fhaft 



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bored trunk, or cylinder of lead, with two oppofite arms with an adapted valve at the bot- 

 tom to prevent the return of the water, and a valve at the extremity of each arm to pre- 



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vent any ingrefs of air above the current of the water as It flows out- 



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them where required. 



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