Weidler, Johann Friedrich, Jo. Friderici Weidleri Tractatus de machinis hydraulicis toto terrarum orbe maximis Marlyensi et Londinensi et aliis rarioribus similibus in quo mensurae prope ipsas machinas notatae describuntur, et de viribus earum luculenter disseritur

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          <pb o="61" file="0071" n="71" rhead="DE MACHINA HYDRAVL. LONDINENSI."/>
          <p>
            <s xml:id="echoid-s1364" xml:space="preserve">G. </s>
            <s xml:id="echoid-s1365" xml:space="preserve">Duo epiſtomia exploratoria, cum fiſtulis annexis,
              <lb/>
            quarum altera in ahenum porrigitur 2 uel 3 digitis, al-
              <lb/>
            tera in aquam ipſam tantundem penetrat, cum ea ha-
              <lb/>
            bet debitam in lebete profunditatem. </s>
            <s xml:id="echoid-s1366" xml:space="preserve">Itaque haec epi-
              <lb/>
            ſtomia ſeruiunt ad explorandum defectum et exces-
              <lb/>
            ſum aquarum in uaporario. </s>
            <s xml:id="echoid-s1367" xml:space="preserve">Nimirum aquae copia
              <lb/>
            ſufficiens ineſt, cum aperto epiftomio per breuiorem
              <lb/>
            fiſtulam uapor, et per longiorem aqua prorumpit.</s>
            <s xml:id="echoid-s1368" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1369" xml:space="preserve">H. </s>
            <s xml:id="echoid-s1370" xml:space="preserve">Fiſtula in ſummo aheni collocata, dicitur fulci-
              <lb/>
            ens, cuius patet os externum et internum. </s>
            <s xml:id="echoid-s1371" xml:space="preserve">Hoc intra
              <lb/>
            aquas longitudine pedis unius et amplius merſum eſt.
              <lb/>
            </s>
            <s xml:id="echoid-s1372" xml:space="preserve">Intra fiſtulam autem natat ſuper aquis lignum teres
              <lb/>
            trunco copulatum; </s>
            <s xml:id="echoid-s1373" xml:space="preserve">et cum uapor in aheno uiolentior
              <lb/>
            redditur, aqua aſſurgit in laudata fiſtula, lignum inna-
              <lb/>
            tans una aſcendit, et truncus eius 12 eodem tempore
              <lb/>
            tollit regulam R (Anglus nominat libramentum, Bal-
              <lb/>
            lance, quia ſurſum deorſumque libratur) et regulam ſiue
              <lb/>
            columellam perpendicularem 7 quae inceptor uocatur; </s>
            <s xml:id="echoid-s1374" xml:space="preserve">
              <lb/>
            tum recedit inciſura 2, ab extremo 3, parui uectis oo,
              <lb/>
            cuius pondus 13, ſubito deorſum ruit, et quia idem ue-
              <lb/>
            ctis affixus eſt epiſtomio iniectionis N, efficit, ut hoc
              <lb/>
            uertatur, et per foramen ſic patens aqua frigida, ex re-
              <lb/>
            ceptaculog per tubum M delapla, ſeſe inſinuet, quae,
              <lb/>
            quia per perpendiculum 12. </s>
            <s xml:id="echoid-s1375" xml:space="preserve">pedum deſcendit, in cylin-
              <lb/>
            dro C in altum proſilit, et fonticulum producit. </s>
            <s xml:id="echoid-s1376" xml:space="preserve">Hinc,
              <lb/>
            condenſatione uaporun facta, uacuum oritur, et pres-
              <lb/>
            ſus atmoſphaerae embolo incumbentis deprimit extre-
              <lb/>
            mum tigni librantis interius b; </s>
            <s xml:id="echoid-s1377" xml:space="preserve">ſimul deſcendit etiam
              <lb/>
            tignum perpendiculare Q (quod in medio cauum, et
              <lb/>
            utrimque aliqua foramina, quibus tres claui teretes
              <lb/>
            ferrei inſeruntur, habet) et unus ex clauis quos ge-
              <lb/>
            rit, apprehendit extremum uectis parui oo, (quod an-
              <lb/>
            tea deſcenſu ponderis 13 ſurſum ultra axem ſuum </s>
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