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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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by the Diameter of its Axis in the Pevets,and then (if but one Friction Wheel is con-cerned, the Quotient will be the Denominatorof a Fraction) multiply the said Quotients oneinto another, and the last product will be theDenominator of a Fraction, whose Numera-tor must be the great Wheel’s Friction, sup-posing its Pevets to turn on dead Surface ;that is, here in this example the Friction ofthe great Wheel by the first Chapter is twohundred pound, and the Quotient of eachPevet Wheel, divided by the Diameter oftheir Axis, is twenty, which multiply’d oneinto the other, produces eight thousand forthe Denominator; whose Numerator is twohundred, which Fraction is which redu-ced to its lowest Denomination is ~ or — of

80 40

one pound.

Reflection.

By this method of reducing the Frictionby means of several little Pevet Wheels, weavoid the charges of* two very large Wheels.As for instance; suppose the aforenamed Fric-tion Wheels were each of them twenty inches2 Diameter,

 
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