Engin. IV.

By whoſe means 4 mighty weight ꝛ8 continually raiſed,although tbe Power le not continually applied, butnom and then à little impulſe preſſes it on by it its onendea vour.

Fg. 94. a pply an Iron , or Stonc Globe(or Ball) of a greatmagnitude and weight, to a ſpear of Iron , orWood CD, and let the Globe be vibrated together with theSpear about che Poles A and B; moreover let there be ſome prettylittle arm EF L, fixt ſomewhere about the middle of the lit-tle Axis, or Pin K, but movable without any reſiſtar ce; join tothis in F a crook F G turning caſily in P, let the end E, of theHittle Arm, be made like the point of a Sword, Or Kyife,(orlittle tongue) Which ma; touch the Spear , being perpendicu-lar; then that part of che Spear which touches the little tongue,muſt be made ſharp in the dame forin, and extended ſo, thatche little tongues reſpect and touch each other.hen the Globe being chruſt with force, or being elevated,and falling again by its weight, mightily effects the Vibrationsby going and coming back, and each part of the Spear madeſnarp in E, hitting againſt ihre little tongue of the arm, forcesthe pin FG towards G, which by that means, Cet and anon.lays hold on ne Teeth of the Wheel H, and turns round theWheel , which cannot be turn'd pack again, being hindred by.the pin P, endcavouring the contrar y. Another little Wheelbeing annext ro the Axis of the Wheel. H, turfs the. Wheel I.about whoſe xis the Rope of che pulleys IL. M being turn'd,takes up the weight N, being faſtned to the loweſt Pulley;Wherefore, if after the derpendicular ſtands ſtill, and moves nolonger, it be again rai ed from the centre and let dow, itsvibrations will effect in che ſame manner as before for ſometime, raiſing the weight in the mean while, although no power be applied, ſo that che weight ſeems 10 aſcend of it felf.ö Note7