Agricola, Georgius, De re metallica, 1912/1950

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb pagenum="285"/>
              way; the lower part of the head is three palms long and the upper part the
                <lb/>
              same length. </s>
              <s>The lower part is a palm square in the middle for two palms,
                <lb/>
              then below this, for a length of two digits it gradually spreads until it
                <lb/>
              becomes five digits square; above the middle part, for a length of two
                <lb/>
              digits, it again gradually swells out until it becomes a palm and a half square.
                <lb/>
              </s>
              <s>Higher up, where the head of the shoe is enclosed in the stem, it is bored
                <lb/>
              through and similarly the stem itself is pierced, and through the opening of
                <lb/>
              each, there passes a broad iron wedge, which prevents the head falling off the
                <lb/>
              stem. </s>
              <s>To prevent the stamp head from becoming broken by the constant
                <lb/>
              striking of fragments of ore or rocks, there is placed around it a quadrangular
                <lb/>
              iron band a digit thick, seven digits wide, and six digits deep. </s>
              <s>Those who
                <lb/>
              use three stamps, as is common, make them much larger, and they are
                <lb/>
              made square and three palms broad each way; then the iron shoe
                <lb/>
              of each has a total length of two feet and a palm; at the lower end, it is
                <lb/>
              hexagonal, and at that point it is seven digits wide and thick. </s>
              <s>The lower
                <lb/>
              part of it which projects beyond the stem is one foot and two palms long;
                <lb/>
              the upper part, which is enclosed in the stem, is three palms long; the </s>
            </p>
            <figure number="153"/>
            <p type="caption">
              <s>A—STAMP. B—STEM CUT OUT IN LOWER PART. C—SHOE. D—THE OTHER SHOE,
                <lb/>
              BARBED AND GROOVED. E—QUADRANGULAR IRON BAND. F—WEDGE. G—TAPPET.
                <lb/>
              H—ANGULAR CAM-SHAFT. I—CAMS. K—PAIR OF COMPASSES.</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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