Biancani, Giuseppe
,
Aristotelis loca mathematica
,
1615
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& commouet. </
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">Vectis vnus eſt A G D, alter B G C, communis fultura eſt G,
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vbi eſt ipſorum decuſſata connexio; dens loco ponderis eſt; vtroque igitur
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C, & D, tanquam manubrijs vectium dentem Medici compræhendentes ip
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ſum facilè commouent: quando autem commotus fuerit, facilius manu,
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quàm inſtrumento extrahitur.</
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QVÆSTIO XXII.
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De Instrumento Nucifrago.
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261</
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">Tempore Ariſt. vt colligitur ex hac quæſtione, ad frangendas nu
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ces peculiare inſtrumentum ligneum adhibeant, quod erat inſtar
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forcipis, ita tamen concinnatum, vt non ad ſcindendum, nec ad
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extrahendum, ſed ad frangendum per
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cõpreſſionem
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eſſet aptum.
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">cuius hanc qualemcumque figuram inſpice. </
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">cuius latus inferius A D, fortè
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alicui fulcimento in plano horizontis, fixum hærebat: alterum verò A C,
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manu tractabatur, vt ſic expeditæ nucium plurima quantitas breui poſſet
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confringi. </
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">Credibile eſt nucifragam hanc ad capita F E, habuiſſe aliquod
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impedimentum, ne omninò conſtringeretur, vt nuces
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frangerẽtur
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quidem,
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non autem comminuerentur. </
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">Cur igitur nuces
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abſq;
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ictu facilè confringun
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tur hiſce inſtrumentis, quæ ad eum fiunt vſum? </
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">contrarium
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accidere
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deberet, vtentes enim prædictis inſtrumentis, omnibus illis viribus deſti
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tuuntur, quas motio, ac violentia percuſſionis afferre ſolent. </
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ligneo vtuntur, ac proinde leui? </
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">non ne aptius eſſet durum,
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pondero
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ſum veluti ferreum?</
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">His reſpondendum eſt, nucifragum iſtud inſtrumentum reduci ad binos
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vectes, quemadmodum etiam dentiforcipem. </
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">nux igitur hoc modo duplici
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vecte comprimitur. </
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<
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">vecte autem facilè onera quælibet
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diuelluntur.
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">qui duo vectes vnicum habent hypomoclion ipſam ſcilicet connexionem
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A. vectes ſunt binæ inſtrumenti haſtæ, F A D,
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E A C.
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dilatãdo
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igitur extrema C D, deducun
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tur etiam alia extrema F, E, & impoſita nuce in
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hiatu K, quæuis potentia conſtringendo C, D,
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conſtringet ſimul F, E,
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ipſamq́
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; nucem confrin
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get. </
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<
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">quod igitur cum percuſſione feciſſet pon
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dus mallei, id valentiori vectium virtute efficiunt F A D, E A C. quanto au
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tem locus nucis K, propinquior fuerit hypomoclio A, tanto celerius
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confringitur, quia partes vectium A C, A D, tunc à centro
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A, productiores fiunt, ideſt multò maiores fiunt,
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quàm ſint diſtantiæ inter nucem, & cen
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trum A, quod maximè poten
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tiam iuuat.</
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