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="23" file="0033" n="33" rhead="DE MACHINA MARLYENSI."/>
            qui eſt ſur la tour de pierre. </s>
            <s xml:id="echoid-s504" xml:space="preserve">les corps des pompes ont 4 pouces
              <lb/>
            de diametre, et quelques uns 6, et les piſtons par leur jeu de
              <lb/>
            4 pieds, apres avoir puiſ’e l’ eau, la refoulent, et la forcent à
              <lb/>
            monter dans les reſervoirs ſuperieurs. </s>
            <s xml:id="echoid-s505" xml:space="preserve">Tous ces mouvemens
              <lb/>
            ſe font par le moyen de cent balanciers vertic alement poſ’es, qui
              <lb/>
            ſont joints l’un à l’autre par les tirants, ausquels d’ autres
              <lb/>
            eſpeces de balanciers ſervent de ſupport, ainſi quand la partie
              <lb/>
            ſuperieure deſcend, les balanciers ſ’ epanchent vers lariviere,
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            et leurs parties inferieures remontant vers le haut de la colline,
              <lb/>
            tirent les piſtons, et puiſent l’ eau dans les corps des pompes,
              <lb/>
            d’ou ils larefoulent, lorsque la partie ſuperieure des balanciers
              <lb/>
            vient à remonter verticalement, et qu’elle ſ’incline vers le
              <lb/>
            baut de la colline. </s>
            <s xml:id="echoid-s506" xml:space="preserve">Le premier mobile de cette machine, eſt un
              <lb/>
            bras de lariviere de ſeine, qu’on a barré par une digue. </s>
            <s xml:id="echoid-s507" xml:space="preserve">Cette
              <lb/>
            digue eſt ouverte par deux endroits, par lesquels l’eau etant
              <lb/>
            retenuë, et plus elevée, et coulant avec rapidité, fait tourner
              <lb/>
            dans chaque pertuis, une rouë de 36 pieds de diametre, et
              <lb/>
            de 5 a 6 pieds de longueur d’ aisles. </s>
            <s xml:id="echoid-s508" xml:space="preserve">Les extremités des axes de
              <lb/>
            chaque rouë ſortent hors de leurs appuis, et ſont tournées en
              <lb/>
            manivelles. </s>
            <s xml:id="echoid-s509" xml:space="preserve">La manivelle qui eſt du coté de la montagne puiſe
              <lb/>
            et refoule l’eau dans les premiers corps de pompes, et l’autre
              <lb/>
            manivelle ſert à faire mouvoir les balanciers. </s>
            <s xml:id="echoid-s510" xml:space="preserve">Il y a 14 rouës,
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            neuf desquelles agiſſent ordinairement, et ſouvent les 14 toutes
              <lb/>
            enſembles, et fourniſſent 200 pouces d’ eau a Verſailles, en fai-
              <lb/>
            ſant mouvoir 2500 pieces de bois vertic alement, dont il n’y en a
              <lb/>
            que mille qui ſoient veritablement balanciers, les autres pieces
              <lb/>
            ne ſervent que de ſupport a leurs tirants, et toutes ces pieces
              <lb/>
            ne ſervent, qu’a faire mouvoir les mille balanciers, ou leviers,
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            lequels à chaque tour de rouë ſ’ inclinent d’ un coté et d’ autre,
              <lb/>
            et apres avoir retiré les piſtons des corps des pompes, qui re-
              <lb/>
            coivent une colonne d’ eau de 4 pieds de bauteur, et de 4 pou-
              <lb/>
            ces de diametre, la refoulent auſſitot. </s>
            <s xml:id="echoid-s511" xml:space="preserve">Treize de ces balanciers
              <lb/>
            ſont de front, et par lemoien de 62 autres, qui ſont le long </s>
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