a 
” 
FOUNDERY. 
and for the furnace. 3. Horfe dung, hair, and hemp, 
ye fut the earth, to render the a more ig 
4. x for infcriptions, coats of a 
ae acl mixed with the Wax, in order to oa a ‘ight 
layer of it upon t 
to it. 6. The coals to. dry t the mould. 
__ For making the mould, they have a foaffold confifting of 
four boards, ranged upon treffels. Upon this they carry 
the earth, grofsly diluted, to — it with horfe-dung, beat- 
ing the whole with a large 
ies es of con nfrubtiona the chief inftrument for 
ould, which confit of two re 
‘And laft 
w 
alt 
tridges, coats of arms, &c. 
They firlt dig a hole, of a fufficient depth to contain the 
mould of the bell, together with the cafe, or cannon, under 
The ftake 1 
e 
When the outer furface of the core 
in to raife the core, which is made of 
bricks that are laid in courfes of equalheight upon a layer of 
plain earth. .At the laying of each brick, they bring near it 
- branch of the compaffes, on which the curve of the core 
is fhaped, fo as that t emain between it and t 
work its oes with a la 
and horfe-dung, 
conftruGtion, to make it of an even fmoothnefs every 
where. 
nee of cement made of: earth. 
ng, with 3 cake ee a 
The firft five confumes the 
and the tire és left in die core half, or,-fometimes, a whole 
day: the firft layer being thoroughly dry, they cover it 
with a fecond, third, and fourth; each being fmoothed by 
the board of the compafies, and thoroughly dried before 
they proceed to another. 
e core being completed, ‘they take the compaffes to 
pieces, his intent. to cut off the thicknefs of the naodel, 
and the mpaffles are seamen cpl put in ae place, to be- 
gina Gon, iece of the mould. It confitts of a mixture 
of earth and hair, eee ‘with the. hand n the core, in 
feveral cakes that clofe together. This work is finifhed by 
feveral layers ofa thinner cement of the fame matter, 
{moothed by the compaffes, and fiecouehly dried, before’ 
another is ip on. 
The laft layer of the model is a mixture 
of wax and gre 
fe f pread over the whole. _ After which are 
: _ is 
-com- 
paffes are taken 
the ed of the thicknefs to be given: to the th all 
re firft laye er is the fame earth with the reft, fifted very 
ae “whilft it is tempering in water, it is.mixed with cow’s 
. ‘ 
» they cover it with a 
ter, but femtbing thicker: when this fecand lay er becomes 
of fome confiftence, they apply the compiffes again, and 
ight a fire in the core, fo as to melt off the wax of the in- 
f{criptions, &e. 
Afte er this, they go on with other ee of the fhell, by 
means “of the compaffes. Here they add to the cow’s hae 
a quantity of hemp, {pread upon the layers and afterwards 
{moethed by the board of the compaffes, ‘he thicknefs of 
the fhell comes to four or five inches lower than the mill- 
ftone before obferved, and furrounds it quite — which 
prevents the extravafation of the metal. a hould 
be see out pau the melting of the m 
ell requires a feparate work, which is 
— during the drying of the feveral eae oa of the 
men t even rings, the feventh is called the bridge, 
and pe the res ne a perpendicular fupport te. 
ftrengthen the curves. It ha 
admit alarge i iron peg, bent a 
troduced into two holes in ae hewn, bein 
ftrong jron There are models o 
with m affes of beaten earth, that are ‘dried in the fire, in 
m. Th 
tone 
» 
i} 
Ey 
~ 
a 
“t 
ay make 
the fix rings: the fame ee do for the eal of the bridges 
and bake ce all, to unite them togeth 
pon the open place left for the cal to be put in, are 
oe the rings | that conttitute the ear. They firlt put 
the iron ring to eee the clapper of 
; then seg make a round a of clay, to till up 
This cake, af- 
ter eae is clapped upon the opening, ae, foldered with 
a ae mortar ipread over it, which binds the cover clofe to 
= 
he c 
The nollie of the model is filled with an earth, fuffi- 
the a which is {trewed, at feve- 
€ core 5 — ey beat it 
water. 
Upon this cover, to be taken off afterwards, tiey affem- 
ble the hollows of the rings 
keep them fteady at the bottom, cya mea noes a cake 0 
‘the ‘one mortar which fills up the ie aperture of the. 
fhell. oved with. 
the hollows of the rings, through which the metal ts 
pafs, before it enters into the vacuity of the mould. The 
fhell being unloaded ° a oF nee range under the mill- 
ftone five or fix pieces, about two feet long, and 
thick enough to <i Simolt the lower part of the fhell 
between thefe.and the mould they drive in wooden wedges 
with a mallet, to fhake the fhell of the model where- 
on. it refts, fo as to. be pulled up, and got out of the 
"When this aud thé wax, are removed, they break the mo 
del and layer of earthy. through w erick the metal mutt run, 
from the hollow o€ the rings, between the bell and the care, 
Q2 1 hey 
