Heron Alexandrinus, Mechanicorum Fragmenta, 1899

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    <archimedes>
      <text>
        <body>
          <chap n="2">
            <p n="4">
              <s id="id.000066">
                <pb pagenum="282"/>
              </s>
            </p>
            <p n="5">
              <s id="id.000067">Τὰ μὲν οὖν προειρημένα ὄργανα φανερὰς καὶ
                <lb n="1"/>
              αὐτοτελεῖς ἔχει τὰς κατασκευὰς πολλαχοῦ ἐν ταῖς
                <lb n="2"/>
              χρείαις φαινομένας, ὁ δὲ κοχλίας ἔχει τι περίεργον
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              περί τε τὴν κατασκευὴν καὶ τὴν χρῆσιν. </s>
              <s id="id.000068">ὁτὲ μὲν
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              [οὖν] γὰρ αὐτὸς καθ' αὑτὸν μόνος ἐνεργεῖ, ὁτὲ δὲ
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              καὶ προσλαμβάνων ἔτι δύναμιν, πλὴν ὅτι οὐδὲν ἕτε­
                <lb n="6"/>
              ρόν ἐστιν ἢ σφὴν εἰλημένος, ἀπολειπόμενος τῆς πληγῆς,
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              διὰ μοχλοῦ δὲ καὶ τὴν κίνησιν ποιούμενος. </s>
              <s id="id.000069">τοῦτο δ'
                <lb n="8"/>
              ἔσται δῆλον ἐκ τῶν μελλόντων λέγεσθαι. </s>
              <s id="id.000070">φύσις μὲν
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              οὖν ὑπάρχει τῆς περὶ αὐτὸν πραγματείας τοιαύτη. </s>
              <s id="id.000071">ἐὰν
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              κυλίνδρου πλευρὰ φέρηται κατὰ τῆς τοῦ κυλίνδρου
                <lb n="11"/>
              ἐπιφανείας, πρὸς δὲ τῷ πέρατι ταύτης σημεῖόν τι ἅμα
                <lb n="12"/>
              κατὰ αὐτῆς τῆς πλευρᾶς φέρηται, καὶ ἐν τῷ αὐτῷ
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              χρόνῳ ἥ τε πλευρὰ μίαν ἀποκατάστασιν ποιήσηται καὶ
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              τὸ σημεῖον τὸ πᾶν τῆς πλευρᾶς διεξέλθῃ, ἡ γενομένη
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              ὑπὸ τοῦ σημείου ἐν τῇ κυλινδρικῇ ἐπιφανείᾳ γραμμὴ
                <lb n="16"/>
              ἕλιξ ἐστίν, ἣν δὴ κοχλίαν καλοῦσιν. </s>
              <s id="id.000072">καταγράφεται δὲ
                <lb n="17"/>
              ἐν τῷ κυλίνδρῳ οὕτως· ἐὰν ἐν ἐπιπέδῳ δύο εὐθείας
                <lb n="18"/>
              ἐκθώμεθα ὀρθὰς ἀλλήλαις, ὧν ἡ μὲν μία ἴση ἐστὶν
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              τῇ τοῦ εἰρημένου κυλίνδρου πλευρᾷ, ἡ δὲ ἑτέρα τῇ
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              τοῦ κύκλου περιφερείᾳ, ὅς ἐστιν βάσις τοῦ κυλίνδρου,
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              καὶ ἐπὶ τὰ πέρατα τῶν εἰρημένων εὐθειῶν ἐπιζεύξωμεν
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              εὐθεῖαν ὑποτείνουσαν τὴν ὀρθὴν γωνίαν, τεθῇ δὲ ἡ
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              ἴση τῇ τοῦ κυλίνδρου πλευρᾷ ἐπὶ τὴν τοῦ κυλίνδρου
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              πλευράν, ἡ δὲ ἑτέρα τῶν περὶ τὴν ὀρθὴν ἐπειληθῇ
                <lb n="25"/>
              κατὰ τῆς τοῦ κύκλου περιφερείας, εἰληθήσεται καὶ ἡ </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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