Agricola, Georgius, De re metallica, 1912/1950

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="caption">
              <s>
                <pb pagenum="502"/>
              two palms thick. </s>
              <s>Upon each end of the block stands a post, a cubit wide
                <lb/>
              and thick, the upper end of which is somewhat cut away and is mortised into
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              the beams of the building. </s>
              <s>At a height of four feet and two digits above the
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              block there are joined to the posts two transverse beams, each of which is
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              three palms wide and thick; their ends are mortised into the upright posts,
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              and holes are bored through them; in the holes are driven iron claves,
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              horned in front and so driven into the post that one of the horns of each
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              points upward and the other downward; the other end of each clavis is
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              perforated, and a wide iron wedge is inserted and driven into the holes, and
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              thus holds the transverse beams in place. </s>
              <s>These transverse beams have in the
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              middle a square opening three palms and half a digit wide in each
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              direction, through which the iron-shod stamp passes. </s>
              <s>At a height of three
                <lb/>
              feet and two palms above these transverse beams there are again two beams
                <lb/>
              of the same kind, having also a square opening and holding the same stamp.
                <lb/>
              </s>
              <s>This stamp is square, eleven feet long, three palms wide and thick; its iron
                <lb/>
              shoe is a foot and a palm long; its head is two palms long and wide, a palm
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              two digits thick at the top, and at the bottom the same number of digits, for
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              it gradually narrows. </s>
              <s>But the tail is three palms long; where the head
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              begins is two palms wide and thick, and the further it departs from the same
                <lb/>
              the narrower it becomes. </s>
              <s>The upper part is enclosed in the stamp-stem, and
                <lb/>
              it is perforated so that an iron bolt may be driven into it; it is bound by three
                <lb/>
              rectangular iron bands, the lowest of which, a palm wide, is between the iron
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              shoe and the head of the stamp; the middle band, three digits wide, follows
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              next and binds round the head of the stamp, and two digits above is the
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              upper one, which is the same number of digits wide. </s>
              <s>At a distance of two
                <lb/>
              feet and as many digits above the lowest part of the iron shoe, is a rectangular
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              tooth, projecting from the stamp for a distance of a foot and a palm; it is
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              two palms thick, and when it has extended to a distance of six digits from the
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              stamp it is made two digits narrower. </s>
              <s>At a height of three palms upward
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              from the tooth there is a round hole in the middle of the stamp-stem, into
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              which can be thrust a round iron bar two feet long and a digit and a half in
                <lb/>
              diameter; in its hollow end is fixed a wooden handle two palms and the same
                <lb/>
              number of digits long. </s>
              <s>The bar rests on the lower transverse beam, and holds
                <lb/>
              up the stamp when it is not in use. </s>
              <s>The axle which raises the stamp
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              has on each side two arms, which are two palms and three digits distant
                <lb/>
              from each other, and which project from the axle a foot, a palm and two
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              digits; penetrating through them are bolts, driven in firmly; the arms are
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              each a palm and two digits wide and thick, and their round heads, for a foot
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              downward on either side, are covered with iron plates of the same width as
                <lb/>
              the arms and fastened by iron nails. </s>
              <s>The head of each arm has a round
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              hole, into which is inserted an iron pin, passing through a bronze pipe; this
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              little axle has at the one end a wide head, and at the other end a perforation
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              through which is driven an iron nail, lest this little axle should fall out of the
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              arms. </s>
              <s>The bronze pipe is two palms long and one in diameter; the little
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              iron axle penetrates through its round interior, which is two digits in diameter.
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              </s>
              <s>The bronze pipe not only revolves round the little iron axle, but it also </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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