Biancani, Giuseppe
,
Aristotelis loca mathematica
,
1615
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igitur ſcytalæ ab ipſo onere non ita premuntur quin moueri melius poſſint
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quàm currus, imò ab ipſo onere iam commoto, ipſæ quoque incitentur, &
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præterea à potentia per planum infernè, benè ſubſtratum, & complanatum
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trahantur, fit, vt quaſi in duobus locis ipſarum rotæ impellantur ab onere
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ſupra, & à potentia infra; ſicque facilius quam currus ingentia præſertim
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onera vehunt.</
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De Funda.
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QVÆSTIO DVODECIMA.
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QVÆSTIO DECIMATERTIA
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De Iugo, & Succula.
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253</
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">Declarandum prius quid ſit hoc loco iugum: eſt igitur iugum li
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gnum illud cylindricum, quod vulgò dicitur Subbio. </
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na ponuntur in ea machina textoria, quam vulgò dicunt Telaio,
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quaſi telarium, eo quod in ipſa telæ texantur. </
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conuoluitur ſtamen: alteri verò contexta iam tela ſubinde cum opus eſt cir
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cumponitur: quæ duo textores faciunt ipſa iuga conuertendo. </
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<
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lius conuertant, iugis vtrinque inſerunt per bina foramina binos collopes.
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tudinem; quibus
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,
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; iugum facilè verſatur. </
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<
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collopes ſunt longiores, facilius iugum circumagitur. </
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<
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collops ad vectem reducitur, cuius fultura eſt circa medium iugi, pondus
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verò eſt extima iugi ſuperficies è qua telæ, aut ſtaminis pondus pendet: in
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altera verò extremitate collopis, quæ extra iugum multum prominet, eſt
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potentia: ibi enim textoris manus premit, vel trahit. </
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eſt collops, ea pars, quæ eſt inter fulturam, & vim, augetur; altera non mu
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tata; quia ſemper inter fulturam, ſeu centrum iugi, & vltimam iugi ſuper
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ficiem continetur; quanto autem illa hanc ſuperat, tantum virium po
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tentiæ addi.</
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<
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lor à verbo græco
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oriunda, quod ſurſum extrahere ſignificat. </
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<
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quo, & voce, & ſignificatione conuenit; eſt enim inſtrumentum, quo ſæpius
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architectores in extrahendis ſurſum ruderibus effoſſis vtuntur. </
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compago quædam cylindrica non admodum longa, cui ex vna parte potiſ
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ſimum prominent plures collopes non mobiles, vt in iugo, verum ſtabiles,
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ac cum ipſa ſuccula compacti, quibus manu appræhenſis ſuccula ſupra bi
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nos polos verſatur,
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; interim ductarius funis circumuoluitur, ſecumque
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ſurſum pondus educit. </
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<
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inſpice. </
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cur quanto gracilius fuerit corpus ſucculæ A B, tanto facilius vertitur.
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<
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