Agricola, Georg
,
De re metallica Libri XII, Quibus Officia, Instrumenta, Machinae, ac omnia ...
,
1556
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<
chap
id
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N10018
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<
p
id
="
N14643
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type
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main
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<
s
id
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N14756
">
<
pb
pagenum
="
179
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xlink:href
="
001/01/189.jpg
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in altiori, per cuius os, qui uenas uel metalla experitur catillum forcipe im
<
lb
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ponit: in humiliori, per cuius
<
expan
abbr
="
partẽ
">partem</
expan
>
ſuperius patentem: quo ſanè modo for
<
lb
/>
naculæ loco artifici eſt circulus ferreus: etenim ſuper
<
expan
abbr
="
focũ
">focum</
expan
>
camini ponitur,
<
lb
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& inferius oblinitur luto, ne flatus follis ſub ipſo exeat. </
s
>
<
s
id
="
N1476C
">Quod ſi fieret tardi
<
lb
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us, uena excoqueretur, & æs liqueſceret in catino triangulari, qui in
<
expan
abbr
="
eũ
">eum</
expan
>
forci
<
lb
/>
pe imponitur, & rurſus eximitur. </
s
>
<
s
id
="
N14777
">Circulus
<
expan
abbr
="
aũt
">aut</
expan
>
altus eſt palmos duos, craſ
<
lb
/>
ſus ſemidigitum: eius ſpacium interius plerunque latum eſt pedem et
<
expan
abbr
="
palmũ
">palmum</
expan
>
:
<
lb
/>
qua parte flatus follis in ipſum penetrat, exciſus eſt. </
s
>
<
s
id
="
N14786
">Sed follis eſt duplica
<
lb
/>
tus, qualem habere ſolent aurifices, aliquando etiam fabri ferrarij: cui in me
<
lb
/>
dio eſt aſſer, in quo ineſt foramen ſpiritale, latum quinque digitos, longum ſe
<
lb
/>
ptem, ſuo aſſerculo tectum: quod è regione eſt foraminis ſpiritalis infimi aſ
<
lb
/>
ſeris. </
s
>
<
s
id
="
N14791
">Eius uerò eadem eſt latitudo & longitudo. </
s
>
<
s
id
="
N14794
">Sed follis longus eſt, exce
<
lb
/>
pto capite, tres pedes: latus poſtrema parte, ubi quodammodo rotundatur,
<
lb
/>
pedem & palmum: ad caput, tres palmos. </
s
>
<
s
id
="
N1479B
">Ipſum autem caput etiam
<
expan
abbr
="
longũ
">longum</
expan
>
<
lb
/>
eſt tres palmos:
<
expan
abbr
="
latũ
">latum</
expan
>
uerò ea parte, qua cum aſſeribus coniungitur duos pal
<
lb
/>
mos &
<
expan
abbr
="
digitũ
">digitum</
expan
>
. </
s
>
<
s
id
="
N147AE
">Poſtea paulatim fit anguſtius: naris, quæ unica, longa eſt pe
<
lb
/>
dem & duos digitos: ea in foramine muri, craſſi pedem &
<
expan
abbr
="
palmũ
">palmum</
expan
>
, locata eſt,
<
lb
/>
ut etiam dimidia capitis pars, in quam naris includitur: circulum uerò ferre
<
lb
/>
um in foco ſtatutum tantummodo attingit: nam extra murum non eminet. </
s
>
<
s
id
="
N147BB
">
<
lb
/>
Corium follis ſui generis clauis ferreis infixum eſt aſſeribus: tum corio u
<
lb
/>
trinque aſſeres
<
expan
abbr
="
iungũtur
">iunguntur</
expan
>
cum capite, ſuper quo eſt corium tranſuerſarium in
<
lb
/>
aſſeris parte clauis, quibus lata ſunt capitula, infixum: ſimiliter
<
expan
abbr
="
alterũ
">alterum</
expan
>
in par
<
lb
/>
te capitis: Medius
<
expan
abbr
="
autẽ
">autem</
expan
>
follis aſſer ſituatus eſt in bacillo ferreo, ad quod cla
<
lb
/>
uis ferreis utrinque cuſpidatis & utrinque directò deorſum uerſus actis affigi
<
lb
/>
tur, ut leuari non poſſit. </
s
>
<
s
id
="
N147D5
">Bacillum uerò ferreum in medio eſt duorum tigno
<
lb
/>
rum erectorum, per quæ penetrat. </
s
>
<
s
id
="
N147DA
">Superius etiam axiculus ligneus, habens
<
lb
/>
codaces ferreos, in foraminibus eorundem tignorum uoluitur: in cuius me
<
lb
/>
dij forma incluſus eſt uectis, et clauis ferreis affixus, ut
<
expan
abbr
="
nõ
">non</
expan
>
queat exilire. </
s
>
<
s
id
="
N147E5
">Lon
<
lb
/>
gus autem eſt quinque pedes & dimidium: cuius poſtremam
<
expan
abbr
="
partẽ
">partem</
expan
>
prehen
<
lb
/>
dit annulus ferreus bacilli ferrei, pertinentis ad caudam infimi aſſeris ipſius
<
lb
/>
follis: quam alter eius annulus ſimiliter prehendit. </
s
>
<
s
id
="
N147F2
">Itaque cùm artifex uectem
<
lb
/>
deprimit, follis pars inferior leuatur, flatumque in narem compellit: atque eti
<
lb
/>
am ſpiritus, per
<
expan
abbr
="
foramẽ
">foramen</
expan
>
, quod ſpiritale dicitur, aſſeris medij penetrans ſub
<
lb
/>
leuat ſuperiorem follis partem: cuius aſſeri ſuperpoſitum eſt plumbum tam
<
lb
/>
graue, ut eam follis partem rurſus poſſit deprimere: quæ depreſſa æquè ac
<
lb
/>
inferior pars per narem
<
expan
abbr
="
flatũ
">flatum</
expan
>
expirat. </
s
>
<
s
id
="
N14807
">Iſto modo ſe habet follis duplicatus:
<
lb
/>
qui fabricatus eſt propter circulum ferreum, in quo catillus triangularis, in
<
lb
/>
quo uena æris excoquitur, & æs liqueſcit, collocatur.</
s
>
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<
p
id
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N1480E
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type
="
caption
">
<
s
id
="
N14810
">C
<
emph
type
="
italics
"/>
irculus ferreus
<
emph.end
type
="
italics
"/>
A. F
<
emph
type
="
italics
"/>
ollis duplicatæs
<
emph.end
type
="
italics
"/>
B.
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E
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emph
type
="
italics
"/>
ius naris
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emph.end
type
="
italics
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C. V
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emph
type
="
italics
"/>
ectis
<
emph.end
type
="
italics
"/>
D.</
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>
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