Schott, Gaspar
,
Mechanica hydraulico-pneumatica. Pars I. Mechanicae Hydraulico-pnevmaticae Theoriam continet.
,
1657
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ubi V, quantum nimirum eſt perpendiculum tubl OP, per
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quem aqua cadit. </
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>Poſtquam verò aqua deſcenderit hinc uſque
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ad P, inde uſque ad V, hærebit utrimque velut in æquilibrio
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immobilis, propter perpendiculorum æqualitatem. </
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<
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>Tum verò
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aperiatur epiſtomium V, & aqua vaſis A deſcendet intra vas
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D, indeque expellet aërem per tubum IK intra vas B; qui aër
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premet aquam, atque propellet ſurſum per tubum LM verſus
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M, ſicque elevabitur aqua ultra punctum V, effluetque aqua
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ex tubo OP, penituſque aſcendet aqua vaſis B, per tubum LM,
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intra vas E; nec ceſſabit fluxus, donec tria vaſa A, B, C, ſimul
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fuerint evacuata, totaque aqua B aſcenderitin E. </
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>Sijam aqua
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vaſorum D & E per ſua epiſtomia depromatur, & vaſa A, B, C,
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denuò repleantur; inſtitui poterit eadem circulatio, idque to
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ties, quoties libuerit. </
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>Hæc eſt praxis Portæ; ingenioſus atque
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induſtrius artifex addere, demere, mutare poterit, quæ libuerit,
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ornatûs aut commoditatis gratia, modò non alteretur rel ſub
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ſtantia, quam nos præcisè hîc dedimus. </
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>Nota hîc, ut aperto epiſtomio T deſcendat aqua vaſis C
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verſus P, laxandum ſimul eſſe epiſtomium V vaſis A; alio
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quin nunquam deſcendet aqua vaſis C, nè detur vacuum, ut
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conſideranti patebit. </
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>Nota præterea, quod diximus de aqua aſcendente ad alti
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tudinem 50. pedum, tantùm gratia exempli fuiſſe dictum: nam
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aqua non poteſt per attractionem|elevari ad tantam
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ut alibi fuſiùs dicemus. </
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§. VII.
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Salomon Caus meritò ſugillat Heronem.
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>HEro cap. 55. Spiritalium ait,
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quædam vaſa à principio humore
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injecto fluunt, intermiſſione verò facta non ampliùs fluunt injecto
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humore, quouſ〈qué〉 ad dimidium repleta fuerint; tunc enim incipiunt flue
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re: At intermiſſione facta, non ampliùs fluunt, quouſ〈que〉 impleantur.
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<
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>Hujus rei probandæ gratia proponit hujuſmodi machinam.</
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