DelMonte, Guidubaldo, Le mechaniche

List of thumbnails

< >
151
151 		152
152
153
153 		154
154
155
155 		156
156
157
157 		158
158
159
159 		160
160
< >
page |< < of 270 > >|
    <archimedes>
      <text id="id.0.0.0.0.3">
        <body id="id.2.0.0.0.0">
          <chap id="N17D85">
            <pb xlink:href="037/01/228.jpg"/>
            <p id="id.2.1.1232.0.0" type="head">
              <s id="id.2.1.1232.1.0">Altramente. </s>
            </p>
            <p id="id.2.1.1233.0.0" type="main">
              <s id="id.2.1.1233.1.0">Ma Mecanicamente meglio ſarà in queſto modo. </s>
            </p>
            <p id="id.2.1.1234.0.0" type="main">
              <s id="id.2.1.1234.1.0">
                <emph type="italics"/>
              Pongaſi l'aſſe, il cui mezo diametro ſia BD, & il centro ſuo C, ilquale aſſe ſta­
                <lb/>
              tuiremo maggiore, ò minore, come la grandezza, & grauezza del peſo ricerca.
                <lb/>
              </s>
              <s id="id.2.1.1234.2.0">Allunghiſi poſcia la li­
                <lb/>
              nea BD fin ad A; &
                <lb/>
              facciaſi BC à CA, co
                <lb/>
              me diece à ſeſſanta., &
                <lb/>
              ſe CA foſſe il mezo dia
                <lb/>
              metro della rota co'rag
                <lb/>
              gi, la poſſanza di diece
                <emph.end type="italics"/>
                <lb/>
                <figure id="id.037.01.228.1.jpg" xlink:href="037/01/228/1.jpg" number="206"/>
                <lb/>
                <emph type="italics"/>
              poſta in A peſerebbe egualmente co'l peſo di ſeſſanta poſto in B. </s>
              <s id="id.2.1.1234.3.0">Ma allunghiſi,
                <lb/>
              BA dalla parte di A, & in queſta allungata linea prendaſi qual ſi voglia punto
                <lb/>
              come E, & facciaſi CE il mezo diametro della rota co'raggi; & pongaſi la poſ­
                <lb/>
              ſanza di diece in E; haurà EC a CB proportione maggiore, che il peſo ſeſſanta
                <lb/>
              poſto in B alla poſſanza di diece poſta in E. </s>
              <s id="id.2.1.1234.4.0">Dunque la poſſanza di diece poſta in
                <lb/>
              E mouerà il peſo ſeſſanta appiccato in B, con la corda inuolta d'intorno all'aſſe, il
                <lb/>
              cui mezo diametro è CB, & CE è il mezo diametro della rota co i raggi. </s>
              <s id="id.2.1.1234.5.0">che bi­
                <lb/>
              ſognaua fare.
                <emph.end type="italics"/>
              </s>
            </p>
            <p id="id.2.1.1236.0.0" type="main">
              <s id="id.2.1.1236.1.0">Sotto queſta ſorte d'iſtrumento ſono gli argani, i molinelli, le tri
                <lb/>
              uelle, i timpani, ò rote co' ſuoi aſſi, ò ſiano dentate, ò nò, &
                <lb/>
              ſimili. </s>
            </p>
            <p id="id.2.1.1237.0.0" type="main">
              <s id="id.2.1.1237.1.0">
                <emph type="italics"/>
              Ma la triuella tiene anco non ſo che della vite; pero che mentre moue il peſo, cioè men­
                <lb/>
              tre fora, per ſua quaſi natura ſempre trapaſſa viè più oltre: percioche ha quaſi le
                <lb/>
              helici deſcritte come d'intorno ad vn cono. </s>
              <s id="id.2.1.1237.2.0">ma perche ella ha la cima acuta, ſi puo­
                <lb/>
              te anche ridurre commodamente alla ragione del cuneo.
                <emph.end type="italics"/>
              </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
Impressum