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All sorts of wheel-carriage, improved : wherein it is plainly made appear, that a much less than the usual Draught of Horses, &c. will be requir'd, in Waggons, Carts, Coaches, and all other Wheel Vehicles, as likewise all Water-Mills, Wind-Mills and Horse-Mills. This Method being found good in Practice, by the trial of a Coach and Cart already made, shews of what great Advantage it may be to all Farmers, Carriers, Masons, Miners, &c. and to the Publick in general, by saving them one half of the Expences they are now at in the Draught of these Vehicles, according to the common Method. The whole illustrated with Copper Plates. And an Explanation of the Structure of a Coach and Cart, according to this Method / by Jacob Rowe, Esq
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will be performed at c and by turning theAxis of the upper Friction Wheel, whichforce will be generated in the Axis by a Pow-er of ~ of a pound, acted any where in theCircumference, which force will be generatedat a, by turning the great Wheel’s Axis by aforce of but ~ of one pound acted on thehandle at z, so that by this means of threeFriction Wheels turning under the Pevets ofthe great Wheel, the force of two hundredpound that was required to turn the saidWheel resting on dead Pevets, can now beperformed by the force of but ^ part of onepound, which is but the ~ of 200; and conse-quently if the Wheel instead of two thousandpound had weighed eighty thousand or fortytuns, according to this reduction of the Fric-tion, the said Wheel would be turned by aforce (acted on the handle) of but one pound;so that whatever number of Pevet Wheels areproposed in order to reduce the Friction, itwill be very easy to determine how far thesaid Friction is reduced thereby by the fol-lowing rule.

Viz. First find the Ratio or Quotients ofthe Diameter of each Friction Wheel divided

by

 
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