Bion, Nicolas, Traité de la construction et principaux usages des instruments de mathématique, 1723

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        <div xml:id="echoid-div332" type="section" level="1" n="149">
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            <s xml:id="echoid-s3754" xml:space="preserve">
              <pb o="113" file="127" n="127" rhead="DE DIFFERENS INSTRUMENS Liv. III. Ch. II."/>
            & </s>
            <s xml:id="echoid-s3755" xml:space="preserve">4. </s>
            <s xml:id="echoid-s3756" xml:space="preserve">Enfin le tuïau 2 repreſente le corps d'une ſeringue par laquelle
              <lb/>
            on introduit le plus d'air qu'on peut dans l'eſpace 4, après quoi
              <lb/>
            ayant fait couler une bale près le petit tuïau 5 dans l'ame à l'en-
              <lb/>
            droit marqué 8, la canne ou arquebuſe ſe trouve toute chargée.</s>
            <s xml:id="echoid-s3757" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3758" xml:space="preserve">Pour la décharger, il ne faut qu'enfoncer dans le petit tuïau 5,
              <lb/>
            une petite cheville ou poinçon rond qui rempliſſe le trou par lequel
              <lb/>
            on pouſſe la ſoupape à reſſort qui eſt à l'ouverture marquée 6: </s>
            <s xml:id="echoid-s3759" xml:space="preserve">car
              <lb/>
            alors l'air qui étoit preſſé dans la cavité 4, ſe dilate, & </s>
            <s xml:id="echoid-s3760" xml:space="preserve">ſortant
              <lb/>
            par l'ouverture marquée 5 dans l'ame du canon, pouſſe la bale au
              <lb/>
            dehors avec impetuoſité, & </s>
            <s xml:id="echoid-s3761" xml:space="preserve">d'une ſi grande force, qu'elle perce une
              <lb/>
            planche d'une moyene épaiſſeur.</s>
            <s xml:id="echoid-s3762" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3763" xml:space="preserve">Le piſton marqué 6, eſt à peu près ſemblable à celui d'une ſerin-
              <lb/>
            gue. </s>
            <s xml:id="echoid-s3764" xml:space="preserve">L'etrier marqué 12, qui eſtau bout, eſt fait pour paſſer le pied
              <lb/>
            dedans, afin de pomper l'air plus facilement. </s>
            <s xml:id="echoid-s3765" xml:space="preserve">Il faut avoir grand ſoin
              <lb/>
            que le corps de la ſeringue ſoit bien juſte & </s>
            <s xml:id="echoid-s3766" xml:space="preserve">bien rond, afin que l'air
              <lb/>
            ne s'en retourne pas. </s>
            <s xml:id="echoid-s3767" xml:space="preserve">Il eſt auſſi neceſſaire que le piſton rempliſſe
              <lb/>
            très-juſte le corps de pompe, & </s>
            <s xml:id="echoid-s3768" xml:space="preserve">qu'il y ait deux petits trous, afin
              <lb/>
            qu'en tirant l'étrier en dehors, l'air preſſé faſſe lever une pétite pla-
              <lb/>
            que de cuir qui eſt attachée au bout du dit piſton, pour le laiſſer paſſer
              <lb/>
            entre le piſton & </s>
            <s xml:id="echoid-s3769" xml:space="preserve">la ſoupape; </s>
            <s xml:id="echoid-s3770" xml:space="preserve">enſuite repouſſant le piſton en dedans,
              <lb/>
            l'air ſe trouvant encore preſſé, fait lever la petite ſoupape qui bou-
              <lb/>
            che le trou de communication, & </s>
            <s xml:id="echoid-s3771" xml:space="preserve">par ce moyen l'air paſſe dans la
              <lb/>
            capacité 3 & </s>
            <s xml:id="echoid-s3772" xml:space="preserve">n'en peut ſortir ſans faire ſon effet.</s>
            <s xml:id="echoid-s3773" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3774" xml:space="preserve">La canne ſe démonte en deux, à l'endroit marqué 7, par le
              <lb/>
            moyen d'une groſſe vis creuſe.</s>
            <s xml:id="echoid-s3775" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3776" xml:space="preserve">La figure 10, qui eſt à part, repreſente la petite ſoupape qui bou-
              <lb/>
            che le trou de communication. </s>
            <s xml:id="echoid-s3777" xml:space="preserve">Il y a une eſpece de vis en tire-bou-
              <lb/>
            re, afin que par ſon reſſort elle puiſſe ſe relever & </s>
            <s xml:id="echoid-s3778" xml:space="preserve">rebaiſſer, ſui-
              <lb/>
            vant que l'air la fait agir.</s>
            <s xml:id="echoid-s3779" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3780" xml:space="preserve">La petite figure 11, repreſente le reſſort en ſoupape. </s>
            <s xml:id="echoid-s3781" xml:space="preserve">On le met en
              <lb/>
            dedans du canon quand la canne eſt démontée. </s>
            <s xml:id="echoid-s3782" xml:space="preserve">Il ſert à boucher le
              <lb/>
            trou qui eſt à l'ame du canon. </s>
            <s xml:id="echoid-s3783" xml:space="preserve">Il faut ſur tout qu'il ſoit ſi bien ajuſté,
              <lb/>
            que l'air ne s'échape point du tout. </s>
            <s xml:id="echoid-s3784" xml:space="preserve">On attache audit reſſort, à l'en-
              <lb/>
            droit qui bouche le trou, un morceau de cuir de Hongrie, afin que
              <lb/>
            le trou ſoit bien bouché. </s>
            <s xml:id="echoid-s3785" xml:space="preserve">L'on démonte auſſi l'étrier qui eſt au bout
              <lb/>
            du piſton, pour mettre une pomme de canne ordinaire à ſa place.</s>
            <s xml:id="echoid-s3786" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div333" type="section" level="1" n="150">
          <head xml:id="echoid-head226" style="it" xml:space="preserve">Conſtruction de l'Eolipile.</head>
          <p>
            <s xml:id="echoid-s3787" xml:space="preserve">CEt Inſtrument eſt fait de laiton battu & </s>
            <s xml:id="echoid-s3788" xml:space="preserve">retraint en forme de
              <lb/>
              <note position="right" xlink:label="note-127-01" xlink:href="note-127-01a" xml:space="preserve">Fig. H.</note>
            boule ou poire creuſe. </s>
            <s xml:id="echoid-s3789" xml:space="preserve">On ſoude une eſpece de tuïau en forme
              <lb/>
            </s>
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