Agricola, Georg, De re metallica Libri XII, Quibus Officia, Instrumenta, Machinae, ac omnia ..., 1556
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              cuti tertia & ab equis uerſatur, & duos habet axes: ſtatutum ſcilicet, circum
                <lb/>
              quem, in terræ cauernam penetrantem, ſimiliter inferius eſt tympanum den
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              tatum: atque ſtratum, circum quem tympanum quod ex fuſis conſtat. </s>
              <s id="N12A9C">Vt ue­
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              rò machina maxima duo habet tympana circum axem ſtratum, prorſus illi­
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              us tympanis ſimilia, ſed minora, quod uaſa ex puteo
                <expan abbr="ducẽtos">ducentos</expan>
              & quadragin­
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              ta tantummodo pedes alto trahere poſsit: quorum alterum ex orbibus, ad
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              quos affixa ſunt tigna compoſitum eſt: alterum, quod exiſtit prope tympa­
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              num quod ex fuſis conſtat, altum eſt undique circum axem pedes duos, craſ­
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              ſum unum: huic harpago impingitur: qui ipſum
                <expan abbr="retinẽs">retinens</expan>
              machinam, cùm res
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              id poſtulauerit, ſiſtit. </s>
              <s id="N12AB5">Toties uerò poſtulat, quoties uel ſacci è corio
                <expan abbr="ſaxorũ">ſaxorum</expan>
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              fragmentis aut terris pleni, extracti euertuntur, uel aquæ ex uaſis, item extra
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              ctis effunduntur: nam hæc machina non onera modo ſicca leuat, ſed etiam
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              humida, perinde ac aliæ quatuor machinæ iam nunc à me deſcriptæ: quine
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              tiam hac in puteum demittuntur tigna, ad eius catenam ductariam alligata. </s>
              <s id="N12AC4">
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              Sed harpago craſſus pedem, longus ſemipedem extat è tigno, catena appen
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              ſo ex altero capite tigni, quod uerſatur circum axiculum ferreum, quem
                <expan abbr="cõ­tinent">con­
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                tinent</expan>
              chelæ tigni ſtatuti. </s>
              <s id="N12AD0">Ex altero uerò mobilis illius tigni capite
                <expan abbr="iterũ">iterum</expan>
              ca­
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              tena appenſum eſt tignum longum, & ex eo rurſus catena alterum tignum
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              breue: cui, cùm machina ſiſtenda fuerit, operarius inſidet, atque ſic ipſum de­
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              primit. </s>
              <s id="N12ADD">Mox ei inijcit aſſerem uel tigillum, quod ſubter duo tigna pertinens
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              ab eis ne attolli poſsit retinetur: quo modo harpago ſubleuatus, tympa­
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              numque amplexus tam ualidè prehendit, ut ſæpe ex ipſo ſcintillæ
                <expan abbr="exiliãt">exiliant</expan>
              . </s>
              <s id="N12AE8">Ha­
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              bet autem tignum dependens, ad quod harpago eſt affixus aliquot forami­
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              na, in quibus catena includitur, ut ipſe quemadmodum conuenit ſubleuari
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              poſsit. </s>
              <s id="N12AF1">Supra tympanum eſt tabulatum, ne id aqua deſtillans madefaciat. </s>
              <s id="N12AF4">
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              Nam ſi madefactum fuerit, harpago machinam minus retinebit. </s>
              <s id="N12AF8">Iuxta uerò
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              alterum tympanum eſt palus, ex quo dependet catena, in cuius annulo po­
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              ſtremo incluſus eſt alter harpago, hoc eſt uncinatum ferrum,
                <expan abbr="longũ">longum</expan>
              pedes
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              tres. </s>
              <s id="N12B05">Is annulo, ad fundum tam uaſis quàm ſacci affixo, iniectus illud retinet
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              ut aqua effundi poſsit, hunc ut ſaxorum fragmenta euerti.</s>
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            <p id="N12B0A" type="caption">
              <s id="N12B0C">T
                <emph type="italics"/>
              ympanum dentatum, quod est ad axem ſtatutum
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              A. A
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              xis ſtratus
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              B.
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              T
                <emph type="italics"/>
              ympanum quod ex fuſis conſtat
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              C. T
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              ympanum prope id ipſum
                <emph.end type="italics"/>
              D.
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              T
                <emph type="italics"/>
              ympanum quod ex orbibus conſtat
                <emph.end type="italics"/>
              E. H
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              arpago
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              F.
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              T
                <emph type="italics"/>
              ignum mobile
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              G. T
                <emph type="italics"/>
              ignum breue
                <emph.end type="italics"/>
              H. A
                <emph type="italics"/>
              lter harpago
                <emph.end type="italics"/>
              I.</s>
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