Vitruvius, I Dieci Libri dell' Architettvra di M. Vitrvvio, 1556

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          <pb o="247" file="0257" n="266" rhead="NONO."/>
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            <s xml:id="echoid-s21111" xml:space="preserve">La te
              <unsure/>
            mpra dell’acqua ſi fa in queſto modo, egli ſi fa drieto la fronte dell’horologio una conſerua dell’acqua, laquale Vitr. </s>
            <s xml:id="echoid-s21112" xml:space="preserve">qui & </s>
            <s xml:id="echoid-s21113" xml:space="preserve">altroue
              <lb/>
            chiama caſtellum, à questo caſtello ſi fa un foro di ſotto, accio l’acqua poſſa uſcire, à quel foro è congiunto un Timpano, & </s>
            <s xml:id="echoid-s21114" xml:space="preserve">ancho egl@ ha
              <lb/>
            un foro per lo quale entra l’acqua in eſſo dal caſtello, queſti ſerà di quella grandezza ſecondo, che ricerca la grandezza dello horolo-
              <lb/>
            gio, la materia delquale è di rame riſpetto all’acqua, che egli tiene del continuo. </s>
            <s xml:id="echoid-s21115" xml:space="preserve">queſti è immobile, & </s>
            <s xml:id="echoid-s21116" xml:space="preserve">ha ſegnato nella ſua circonfe-
              <lb/>
            renza di tauti punti quanto ſono giorni all’anno, & </s>
            <s xml:id="echoid-s21117" xml:space="preserve">ancho egli ſi può fare un zodiaco i gradi de i ſegni delquale riſpondino à i gior-
              <lb/>
            ni de i meſi, ſecondo che egli ſi puo trarre dalla tauola ſotto posta. </s>
            <s xml:id="echoid-s21118" xml:space="preserve">diſſegnato ſia nella ſommità il Cancro, dalla deſtra di colui, che guar-
              <lb/>
            da la Libra, dalla ſiniſtra il Montone, di ſotto il Capricorno, & </s>
            <s xml:id="echoid-s21119" xml:space="preserve">tra questi ſiano al luogo ſuo deſcritti gli altri ſegni, & </s>
            <s xml:id="echoid-s21120" xml:space="preserve">igradi loro a
              <lb/>
            iquali di ſotto ſiano i giorni, i numeri, & </s>
            <s xml:id="echoid-s21121" xml:space="preserve">i meſi riſpondenti à i loro propi ſegni. </s>
            <s xml:id="echoid-s21122" xml:space="preserve">Tira poi una linea à perpendicolo dal Cancro al Capricorno,
              <lb/>
            laquale è come diametro del Timpano, partirai poi la circonferenza del detto Timpano in parti noue eguali, & </s>
            <s xml:id="echoid-s21123" xml:space="preserve">ſecondo la larghezza di una
              <lb/>
            ſi fa il ſemidiametro d’un’altro Timpano picciolo, della circonferenza delquale ſi fanno otto parti, & </s>
            <s xml:id="echoid-s21124" xml:space="preserve">ſecondo la diſtanza d’una di quelle ſi al
              <lb/>
              <note position="left" xlink:label="note-0257-01" xlink:href="note-0257-01a" xml:space="preserve">10</note>
            larga la ſeſta, & </s>
            <s xml:id="echoid-s21125" xml:space="preserve">ſi pone un piede di eſſa nel mezzo del Timpano grande, & </s>
            <s xml:id="echoid-s21126" xml:space="preserve">ſi fa un circolo di quella grandezza, & </s>
            <s xml:id="echoid-s21127" xml:space="preserve">il Simile ſi fa nel Timpa-
              <lb/>
            no picciolo. </s>
            <s xml:id="echoid-s21128" xml:space="preserve">queſto circolo ſi parte in parti ſette eguali, una dellequali ſi parte in quattordici, una dellequali ſi riporta dal centro del Timpa-
              <lb/>
            no picciolo ſopra il diametro, & </s>
            <s xml:id="echoid-s21129" xml:space="preserve">iui ſi fa punto uerſo la parte inferiore, & </s>
            <s xml:id="echoid-s21130" xml:space="preserve">ſi tira da quel centro una circonferenza tanto quanto è una delle
              <lb/>
            ſette parti, & </s>
            <s xml:id="echoid-s21131" xml:space="preserve">questo ſi fa ancho nel Timpano grande, & </s>
            <s xml:id="echoid-s21132" xml:space="preserve">è queſto circolo come uno eccentrico, & </s>
            <s xml:id="echoid-s21133" xml:space="preserve">tra questo circolo eccentrico e l’altro con-
              <lb/>
            centrico dalla parte di ſopra ſi fa un foro nel Timpano grande ritondo, dalquale eſce l’acqua, che ua poi nel Timpano picciolo, nelquale Tim
              <lb/>
            pano picciolo ſono diſſegnati i medeſimi circoli cioe lo Eccentrico, & </s>
            <s xml:id="echoid-s21134" xml:space="preserve">Concentrico, & </s>
            <s xml:id="echoid-s21135" xml:space="preserve">quelli partiti con certe linee, accioche per quelle paßi
              <lb/>
            l’acqua dal Timpano maggiore piu e meno ſecondo il biſogno, le altezze ò uacui de i Timpani ſi faranno ſecondo la capacit à dell’ acqua, che ri-
              <lb/>
            chiede l’horologio, nel coltello, et taglio, ò frōte, che ſi dica, del Timpano minore ſi fa un foro, che Vitr. </s>
            <s xml:id="echoid-s21136" xml:space="preserve">chiama Orbiculo, alquale è attaccata una
              <lb/>
            lenguella, da questo foro eſce l’acqua in un uaſo ſott
              <unsure/>
            opoſto. </s>
            <s xml:id="echoid-s21137" xml:space="preserve">Queſti Timpani ſono poſti inſieme con i Cardini loro fatti à torno di modo, che
              <lb/>
            uno entri nell’ altro come maſchio & </s>
            <s xml:id="echoid-s21138" xml:space="preserve">femina, & </s>
            <s xml:id="echoid-s21139" xml:space="preserve">il Timpano picciolo ſia col piano ſuo for ato coſi congiunto, & </s>
            <s xml:id="echoid-s21140" xml:space="preserve">aſſettato col piano del Timpa-
              <lb/>
              <note position="left" xlink:label="note-0257-02" xlink:href="note-0257-02a" xml:space="preserve">20</note>
            no maggiore, che niuna coſa di mezzo ui poſſa entr are, & </s>
            <s xml:id="echoid-s21141" xml:space="preserve">à queſta ſimiglianza Vitr. </s>
            <s xml:id="echoid-s21142" xml:space="preserve">dice che ſono i Galletti, ò i bocchini aſſaggiati alle coſe,
              <lb/>
            egli accader à adunque, che uolendo noi temprar Pacqua la lenguella che è congiunta al foro del Timpano minore, drizzata da ſe con l’artifi-
              <lb/>
            cio dell’acqua di giorno in giorno al ſegno, & </s>
            <s xml:id="echoid-s21143" xml:space="preserve">al giorno corrente deſcritto nel Timpano maggiore hauendo in quella parte il foro del Timpa-
              <lb/>
            no minore hora dritto hora piegato, hora à perpendicolo, ſecondo, che ricercherà il ſito di quel giorno mander à fuori piu, & </s>
            <s xml:id="echoid-s21144" xml:space="preserve">meno ac-
              <lb/>
            qua in un uaſo di ſotto, nelquale ſer à il ſecchiello attaccato alla catena, come di ſopra s’ è detto, & </s>
            <s xml:id="echoid-s21145" xml:space="preserve">riuolger à ogni giorno il perno, & </s>
            <s xml:id="echoid-s21146" xml:space="preserve">il perno
              <lb/>
            il Timpano dello horologio, & </s>
            <s xml:id="echoid-s21147" xml:space="preserve">quello ſecondo il biſogno, & </s>
            <s xml:id="echoid-s21148" xml:space="preserve">benche pare che Vitr. </s>
            <s xml:id="echoid-s21149" xml:space="preserve">uoglia, che la bolla, che tiene la imagine del Sole, ſia à mano
              <lb/>
            trapportata di foro in foro contra il giro del Timpano, niente dimeno l’ingenioſo M. </s>
            <s xml:id="echoid-s21150" xml:space="preserve">Franceſco Marcolino ha trouato il modo di fare, che la len
              <lb/>
            guella, che nella parte dinanzi dimoſtra l’hore (che noi chiamiamo raggio) ritorni à drieto ogni di un grado; </s>
            <s xml:id="echoid-s21151" xml:space="preserve">& </s>
            <s xml:id="echoid-s21152" xml:space="preserve">perche Vitr. </s>
            <s xml:id="echoid-s21153" xml:space="preserve">uuole, che nel
              <lb/>
            Timpano, che dimoſtra l’aſcendere, & </s>
            <s xml:id="echoid-s21154" xml:space="preserve">diſcendere de i ſegni ſopra la terra, ſiano ſegnati i giorni de i meſi, liquali per eſſere 365. </s>
            <s xml:id="echoid-s21155" xml:space="preserve">ha fatto nella
              <lb/>
            circonferenza del detto Timpano ò Ruota che chiamiamo noi 365 denti partiti egualmente come dice Vitr. </s>
            <s xml:id="echoid-s21156" xml:space="preserve">& </s>
            <s xml:id="echoid-s21157" xml:space="preserve">come uuole eſſo Autore, gli ha
              <lb/>
              <note position="left" xlink:label="note-0257-03" xlink:href="note-0257-03a" xml:space="preserve">30</note>
            poſto nel mezzo il ſuo Cardine, che ſerue ꝑ maſchio, et femina;</s>
            <s xml:id="echoid-s21158" xml:space="preserve">et di poi ha formato un’altro Timpano ò pur Ruota (come dicemo noi) della grã
              <lb/>
            dezza della ſopradetta, & </s>
            <s xml:id="echoid-s21159" xml:space="preserve">nel coltello ò circonferenza ſua che uolemo dire, ha fatto denti 366. </s>
            <s xml:id="echoid-s21160" xml:space="preserve">deſtinti di egual portione & </s>
            <s xml:id="echoid-s21161" xml:space="preserve">questa Ruota ha
              <lb/>
            anchor lei il ſuo Cardine maſchio & </s>
            <s xml:id="echoid-s21162" xml:space="preserve">femina ilquale non è coſi detto da Vitr. </s>
            <s xml:id="echoid-s21163" xml:space="preserve">ſenza gran conſideratione & </s>
            <s xml:id="echoid-s21164" xml:space="preserve">nel foro di queſto Perno, entra il
              <lb/>
            Perno principale confitto, & </s>
            <s xml:id="echoid-s21165" xml:space="preserve">ſtretto di modo che girando ditto Perno per uirtu della tempra de l’acqua ſi giri questa Ruota con eſſolui come
              <lb/>
            ſe fuſſero una coſa medeſima; </s>
            <s xml:id="echoid-s21166" xml:space="preserve">et dipoi nel Perno di questa Ruota, ſi pone la Ruota nella qual ſon ſegnati i giorni di ciaſcun meſe & </s>
            <s xml:id="echoid-s21167" xml:space="preserve">i Segni Ce
              <lb/>
            leſti; </s>
            <s xml:id="echoid-s21168" xml:space="preserve">lequali Ruote, girando il Perno, girano inſieme in un Rocchello moſſo da dette Ruote, & </s>
            <s xml:id="echoid-s21169" xml:space="preserve">girando cōtinuamēte di cōpagnia, quella che ha
              <lb/>
            un dente di piu resta ogni di un grado in drieto, il Perno dellaquale uuole auanzare fuori della fazza dello Horologio eſſendo grāde per il man
              <lb/>
            co mezzo piede, & </s>
            <s xml:id="echoid-s21170" xml:space="preserve">nella ſua ſommit à fia accommodata la lenguella della longhezza quanto far à dibiſogno, nellaquaιſeranno ſegnati i gradi de i
              <lb/>
            ſegni da un tropico all’altro, laquale ſeruir à à moſtrare l’hore, & </s>
            <s xml:id="echoid-s21171" xml:space="preserve">il Corſo de i Segni & </s>
            <s xml:id="echoid-s21172" xml:space="preserve">i gradi il Verno, come dice Vitr. </s>
            <s xml:id="echoid-s21173" xml:space="preserve">Et mettendoſi la
              <lb/>
            lenguella al Perno dell’altra Ruota ilquale ſarà piu corto quattro dita moſtrer à il Creſcere de i giorni & </s>
            <s xml:id="echoid-s21174" xml:space="preserve">i Corſi de i Segni et i gradi, & </s>
            <s xml:id="echoid-s21175" xml:space="preserve">
              <lb/>
              <note position="left" xlink:label="note-0257-04" xlink:href="note-0257-04a" xml:space="preserve">40</note>
            l’hore di tutta la State, perche ſi come l’altra Ruota per lo dente di piu, moſtra il calar de i giorni queſta per lo dente de manco con la lenguel-
              <lb/>
            la moſtrerà il creſcere de i giorni, & </s>
            <s xml:id="echoid-s21176" xml:space="preserve">il calar delle notti. </s>
            <s xml:id="echoid-s21177" xml:space="preserve">Auertendo che nella lenguella uà accommodato un Sole, ò bolla come dice Vitr. </s>
            <s xml:id="echoid-s21178" xml:space="preserve">mo-
              <lb/>
            bil e da poter ſi trapportare ogni giorno in detta lenguella nel grado del Segno del giorno corrente, come fa la lenguella della tempra de l’ac-
              <lb/>
            qua da ſè. </s>
            <s xml:id="echoid-s21179" xml:space="preserve">Io uedo quanta difficultà ſi troua in uoler deſcriuere queste coſe, ma poi che conſidero, come quando la coſa ſerà inteſa, ſi
              <lb/>
            prender à guſto mirabile, uoglio creder, che ogni fatica ci parer à dolce, e ſoaue.</s>
            <s xml:id="echoid-s21180" xml:space="preserve"/>
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