Boyle, Robert, New experiments physico-mechanicall, touching the spring of the air and its effects, 1660

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="013/01/054.jpg" pagenum="14"/>
              the Scheme, into whoſe intervals are to
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              be fitted, the teeth of a ſmall Iron nut;
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              (
                <gap/>
              ) (as Tradeſ-men call it) which is faſt­
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              ned by two ſtaples (22) to the under ſide
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              of the formerly mention'd tranſverſe
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              board (222) on which the Cylindre reſts,
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              and is turn'd to and fro by the third piece
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              of this Pump, namely, the handle or
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                <emph type="italics"/>
              manubrium,
                <emph.end type="italics"/>
              (7) of which the Figure gives
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              a ſufficient deſcription. </s>
            </p>
            <p type="main">
              <s>The fourth and laſt part of this Cylin­
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              dre, is the Valve, (R) conſiſting of a
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              hole bored through at the top of the Cy­
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              lindre, a little tapering towards the cavi­
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              ty; into which hole is ground a tapering
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              Peg of braſs, to be thruſt in, and taken
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              out at pleaſure. </s>
            </p>
            <p type="main">
              <s>The Engine being thus deſcrib'd, it
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              will be requiſite to adde, that ſomething
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              is wont to be done before it be ſet on
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              work, for the more eaſie moving of the
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              Sucker, and for the better excluſion of
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              the outward Air: which when the Veſſel
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              begins to be exhauſted, is much more dif­
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              ficult to be kept out then one would eaſi­
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              ly imagine. </s>
            </p>
            <p type="main">
              <s>There muſt then be firſt powr'd in at
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              the top of the Receiver a little ſallad oyl,
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              partly to fill up any ſmall intervalls that </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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