114 Mechanick Powers. Book VI.

perceive a ready way of making Engins for any occaſion, andaccommodate them to their uſe. N

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Mechanic, Pomers.

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BOOK. VII.

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Engin. I.

An Engin, wherely 4 Vagoner may raiſe his Nagon,or Cart, although loaded; alſo by it, the Roof FanHouſe, ea the whole Caſe Hebe Houſe, may be

rat ſed.

Eg. 91. F Iron, or other ſolid matter, make 3 wheels,

the 2 leſſer A and. C, and the other greater

B; the little wheel A hath five teeth, ardtne little wheel C the ſame; but the wheel B hath 20 teeth,and ſo is fourfold greater, and hath one common axis with theWheel C , alſo make of the ſame matter a firm Priſme D Ewith teeth, defend on every ſide all the caſe of wood withIron , in which the teeth are included, the upper part beingopen, ſo that the teeth of the wheel A, lay hold of the teethof the wheel B, and the teeth of the wheel C, lay hold ofthe teeth of the Priſme D E: But the axis of the wheel Aſtands out without the ſide of the cafe, and is turn'd by thehandle GH, and with the handle the little wheel A is turn'd,which turns the wheel Band C, and the teeth of the wheelU, running into the teeth of the Priſme D E, they move it up-Ward, until the laſt tooth near E, be in the region of theWheel .