Clearfield Republican. [volume] (Clearfield, Pa.) 1851-1937, 1873-02-12

IA, NO. I.
md repeats the operation with two
more pieces of clay paste; quickly
iraws q stretched wire across tho top
md the set of moulds is taken away
BY the boy, while another brings an
other set and places them beire him,
and the process is continued dd mint
'um. The moulded bricks arc emptied
out upon the heated floor. Before
they have time TO dry they nro load
cd upon wheelbarrow, trundlcd to
the press and submitted, one by one,
to the pressure required 10 drive the
particles together compactly the press
man each time wiping carefully the
bottom of the press, which contains
the stamp, as it appears above the
sides after the brick is pressed, in
order that it may be taken away
Two boys take the bricks from the
press between two thin strips of wood
and stand them on end upon the dry
ing floor, and the moisture is soon cs-
Gaping from them in clouds of steam.
Two Of these presses are at work all
tho time, each turning out 1000
bricks per day. Having dried sufli-
GENTLY they are taken to tho kiln,
where the fire transforms them into
artificial stone, as hard and firm as
the granite, and with quality of re-
sstance to heat more great. The mill
is driven by 40 horse power engine,
steam being generated in boiler AZ
inches in diameter, and 2S feet in
length.
THE KILSs
are three in number, each with a ca
pacity of 10000 bricks. As VIC saw
them, one kiln was being filed, an
other was burning and third was
burned. This rotation is always OBJ
served and thus an empty kiln is con
stantly ready 10 receive the brick
from the floor. The bricks are place.
upon their edges in the kiln each layer
being at right angles with the other
and the bricks were closely piled a
the bottom 10 protect them from tb
great heat and TO resist the weight O
those above. When kiln is full tn
doors are sealed with cement, the fire
lighted and kept up for seventy hours
The work is then done, and from th
door opposite the one which they en-
tered unburncd, the burned bricks ar
taken TO the sheds on the siding 10
shipment. The facilities for shippin
are excellent. About rod from th
, floor are the kilns, and the other on
of the kilns open upon the landing
5 Ten thousand bushels--3S5 tons
c coal are consumed monthly, and III
| works turn out 100000 bricks pr
, month, employing a
S FORCE
g of fifty. six workmen. The bricks no
made at these works are used in ste
< works, rolling mills, blast furnace
/, tannerics, &C., and for each purpo
Q bricks OF different composition are r
o aured. So far is this true that bricl
n suitable for the furnace in which ste
c is smelted by the Bessemer proce
3 require to be differently constitut,
|. from those OF furnace used in q
/, Seaman process. The bricks for
W pudding furnace would be useless 1
,f blast furnace, and bricks for a l
1t verberatory furnace would not be dr
,r able in eupola And in understan
lie ing the philosophy of these several
e, quircments and possessing skill TO pl
I'd portion the different clays used so
Ig TO produce material fitted for Gu
O. specific requirement, lies the secret
r.. the success Of the brick manufactnr
gs There are two distinct kinds Of cli
he usually found together, which
necessary to this result, tho hard q
soft. Mr., McMath, the manager
his the works, one Of the most practi
&c fire-brick men in the state, from a ]
,et experience in the manufacture of br
I'M is able to explain the sciene OF br
ng making in manner highly intert
ed ing to the inquirer For instan
m his theory of the brick TO be used /
sc, pudding mill is something like tn
- Here we have an intense heat, to wi
ks stand which we must have q br
NY firm, compact, but yet porous, pres
I'm hard, yet an open brick, for the OF
vi sivuai u'aus"vs Va vv'u ct, s"'h'"
lar brick not porous, would cause !
ng check from inequality of contract
ng We must have good conductor
But heat, and the imporous brick is M
ith good conductor. Tho
oal VEIN OF CLAY,
: is sixteen feet in thickness, is compo
ith of three strata, the hard, soft
Tho shelley, in the order in which I
csc are named, from the surface do
IAN wards and from these, mixed in
in proportion known only to the ini
els, ted, the bricks are made, as is also
les, Canister from which the cemcn
:. ..,Ja ,aod in LAWN d, tho hripks