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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            <s xml:id="echoid-s1518" xml:space="preserve">
              <pb o="67" file="0077" n="77" rhead="DE MACHINA HYDRAVL. LONDINENSI."/>
            aperiebat uel occludebat. </s>
            <s xml:id="echoid-s1519" xml:space="preserve">Sed quia motu tigni penſilis
              <lb/>
            etiam regitur uectis O. </s>
            <s xml:id="echoid-s1520" xml:space="preserve">O, ut hic facilius officium ſuum
              <lb/>
            faciat, loco quadrantis, quem ante data deſcriptio re-
              <lb/>
            quirit, ferrum bifurcum circa clauum uerſatile aſſumi-
              <lb/>
            tur, quod prorſum retrorſumque mouetur, et epiſto-
              <lb/>
            mium N ferro tranſuerſo praeditum per uices aperit
              <lb/>
            et claudit. </s>
            <s xml:id="echoid-s1521" xml:space="preserve">Niſi fallor memoria, eadem emendatio
              <lb/>
            iamiam ann. </s>
            <s xml:id="echoid-s1522" xml:space="preserve">1726. </s>
            <s xml:id="echoid-s1523" xml:space="preserve">adhibita ſpectabatur machinae ma-
              <lb/>
            iori, quae Londini ad ripam Thameſis proſperrimo
              <lb/>
            ſucceſſu incredibilem aquarum uim in motum ciet. </s>
            <s xml:id="echoid-s1524" xml:space="preserve">In
              <lb/>
            Paſſiacenſi machina idem artificium obuium habui,
              <lb/>
            cuius adhuc in ſcriniis meis aſſeruo accuratam perſpi-
              <lb/>
            cuamque delineationem Pariſiis mecum communica-
              <lb/>
            tam. </s>
            <s xml:id="echoid-s1525" xml:space="preserve">Praeterea in exemplo illo machinae minori ant-
              <lb/>
            liam aliter deprehendi conformatam. </s>
            <s xml:id="echoid-s1526" xml:space="preserve">Erat illa ſecun-
              <lb/>
            di generis aſpirans et premens, de qua dixi Cap. </s>
            <s xml:id="echoid-s1527" xml:space="preserve">I. </s>
            <s xml:id="echoid-s1528" xml:space="preserve">§.
              <lb/>
            </s>
            <s xml:id="echoid-s1529" xml:space="preserve">VIII. </s>
            <s xml:id="echoid-s1530" xml:space="preserve">nempe adducto intra cylindrum embolo, aquae
              <lb/>
            ex puteo ſupra ualuulam aſſurgebant, deinde embolo
              <lb/>
            retruſo, in aliam fiſtulam ualuula itidem praeditam pro-
              <lb/>
            pellebantur, et ad inſignem altitudinem eleuabantur. </s>
            <s xml:id="echoid-s1531" xml:space="preserve">
              <lb/>
            Verum ut aquarum expulſio in altum fiat, requiritur
              <lb/>
            ſtabile ferrum loco catenae, quo, dum a uapore eleua-
              <lb/>
            tur embolus L, alter i ex librante tigno h 2 ſuſpenſus
              <lb/>
            deorſum ualide protrudatur, ut ſuperando aqueae co-
              <lb/>
            lumnae altioris oneri parem uirtutem conſequeretur. </s>
            <s xml:id="echoid-s1532" xml:space="preserve">
              <lb/>
            Quantum autem robur @uaporis expanſione proficiſci
              <lb/>
            queat, utique experientiae duntaxat documento com-
              <lb/>
            probandum eſt.</s>
            <s xml:id="echoid-s1533" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1534" xml:space="preserve">4. </s>
            <s xml:id="echoid-s1535" xml:space="preserve">Menſuras operis ex ſcala addita petere licet. </s>
            <s xml:id="echoid-s1536" xml:space="preserve">An-
              <lb/>
            glicae deſcriptionis auctor eam omiſit, quare eam ſup-
              <lb/>
            pleui, machinarum, quae Londini et in uilla Paſſy ere-
              <lb/>
            ctae ſunt, attentiore contemplatione. </s>
            <s xml:id="echoid-s1537" xml:space="preserve">Diameter cy-
              <lb/>
            lindri maioris eſt 2 {1/2} p. </s>
            <s xml:id="echoid-s1538" xml:space="preserve">altitudo 9 p. </s>
            <s xml:id="echoid-s1539" xml:space="preserve">ahenum latum </s>
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