Heron Alexandrinus, Di Herone Alessandrino De gli automati : ouero machine semoventi, libri due, 1589

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            <s xml:id="echoid-s433" xml:space="preserve">
              <pb o="18" file="0039" n="39" rhead="LIBRO PRIMO."/>
            l’aſſeteſo al ſemituono, come dopo ſi farà chiaro: </s>
            <s xml:id="echoid-s434" xml:space="preserve">Tutte
              <lb/>
            queſte Mobili pigliano il principio del moto dal Hy-
              <lb/>
            ſplengio, ò contiapeſo di piombo; </s>
            <s xml:id="echoid-s435" xml:space="preserve">commune al motore,
              <lb/>
            & </s>
            <s xml:id="echoid-s436" xml:space="preserve">al moſſo è la corda, la quale hà vno de’capi legato al
              <lb/>
            motore, el’altro auiluppato al moſſo; </s>
            <s xml:id="echoid-s437" xml:space="preserve">il moſſo è l’aſſe, in-
              <lb/>
            torno alquale s’auiluppa la corda. </s>
            <s xml:id="echoid-s438" xml:space="preserve">All’aſſe, ò fuſo ſono
              <lb/>
            congiunte le ruote, dimaniera che raggirat
              <unsure/>
            o l’aſſe, eſui-
              <lb/>
            luppata la corda, ſi girano inſieme anco le ruote appog-
              <lb/>
            giate ſu’l piano; </s>
            <s xml:id="echoid-s439" xml:space="preserve">& </s>
            <s xml:id="echoid-s440" xml:space="preserve">intorno alle ruote giace il Plint
              <unsure/>
              <note symbol="14" position="left" xlink:label="note-0039-01" xlink:href="note-0039-01a" xml:space="preserve"/>
            ò caſſetta del ſe Mouente mobile; </s>
            <s xml:id="echoid-s441" xml:space="preserve">la te
              <unsure/>
            ſtapoidel Hiſplen-
              <lb/>
            gio, ouero la grauezza del contrapeſo, deuono di ma-
              <lb/>
            niera riſpondere altutto, che non ſia ſuperato dalla caſ-
              <lb/>
            ſetta, nè il contrapeſo, ne lateſa dell’Hiſplengio; </s>
            <s xml:id="echoid-s442" xml:space="preserve">glialtri
              <lb/>
            mouimenti, fuori di quello, che ſi fà da luogo à luogo,
              <lb/>
            naſcono da tutte le corde, che ſono auiluppate à gli ſtru-
              <lb/>
            menti moſsi, e raccomandate al contrapeſo. </s>
            <s xml:id="echoid-s443" xml:space="preserve">Queſto
              <lb/>
            poiè in vna certa canna accõmodata di maniera, che fa-
              <lb/>
            cilmente poſſa diſcendere per eſſa : </s>
            <s xml:id="echoid-s444" xml:space="preserve">Nella canna poi,
              <lb/>
            nelle mobili ſi getta ò miglio, o ſenape, per eſſerel vna,
              <lb/>
            & </s>
            <s xml:id="echoid-s445" xml:space="preserve">l alt
              <unsure/>
            ra di loro lc
              <unsure/>
            ggiera, & </s>
            <s xml:id="echoid-s446" xml:space="preserve">ftuſsibile: </s>
            <s xml:id="echoid-s447" xml:space="preserve">Nele ſtabili ſi getta
              <lb/>
            arena aſciutta lequali coſe ſcorrendo fuoridal fondo del-
              <lb/>
            la canna il contrapeſo, pian piano diſcend@ndo, cagiona
              <lb/>
            il mototirando ciaſcuna delle corde. </s>
            <s xml:id="echoid-s448" xml:space="preserve">Principio del mot
              <unsure/>
            o
              <lb/>
            è il tiramento della corda, e fine, e ſtato del medeſimo è
              <lb/>
            lo ſciogliméto della medeſima cadendo l’vncinetto dalla
              <lb/>
            punta, che è fitta nell’inſtrumento moſſo; </s>
            <s xml:id="echoid-s449" xml:space="preserve">le cordepoi, che
              <lb/>
            dal contrapeſo ſono tirate, tutte con egualtempo ſono ti
              <lb/>
            rate, nondimeno non fanno in egual tempo i motiloro, e
              <lb/>
            ciò per non eſſere auiluppate intorno inſtrumenti fra ſe
              <lb/>
            medeſimi eguali, ma alcune diloro ad alcuni di maggiori
              <lb/>
            & </s>
            <s xml:id="echoid-s450" xml:space="preserve">altre intorno altri di minor circulo. </s>
            <s xml:id="echoid-s451" xml:space="preserve">Biſogna anco,
              <lb/>
            chele corde di quegli inſtrumenti, che non deuono muo-
              <lb/>
            uerſi inſieme, non ſiano teſe, mache habbiano
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            </s>
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