Clearfield Republican. [volume] (Clearfield, Pa.) 1851-1937, 1873-03-26
The Use Of Zinc,

enca of 6fiv vcars shows that II forms
n nerTec,Iv sornd and nearly ;mnor
;.bohis rooe corar;n" In ma com
,rw ;tS nsa !. unno1nlar II wa nav
u:s Tho avnross;nn md ma;n,v ~.
tL;,L hocanse tba rr;n c;rIos vnoU
which IL sbould ba used arc va, hard
To- understood Who, 6.st ;n,ra
,iuced about the earlv mar, of,ho nros
AMI ccrturv ,hero waro ~ Enr,;0h
workmen who thoron.hl,, oowrra
hended tho no,nrs ofeths ,no,ar;sl
with which thav haI 20 i.ai ond
snsc;., Lnow,adyo T. shso,n,o,, naoos
sprr In tho arst nIace Tho exnan
s;o1 and con,rootia,. of v;nc undar
inauences are greater
than tbose of other metals in ord;na.
rv use. Conner. which ia yerv efi.
cient. but rarely used. on aoconnt of
its coat annroacbes Il moro nearly
but the exnansion and contraction ~
zinc ia BRO rata nearly one third more
than that Of conner Therefore in |
the construction of drips lans and |
other uniting points. it is necessary
that. while being sufficiently sound 10
keen out the weather a certain ,plav,
10 use the technical phrase. should al. |
ways bo allowed. ANY attempt to |
solder together zinc roof into one
homogeheo BODY, is certainly fol. |
lowed by buckling, cracking and fail. |
urs. and this was fruitful source ofl
trouble in earlier transactions. An.
other mistake made was. that the zint
used was too thin. Tho process of
oxidation which this metal undergocs
is peculiar. Tho rusted surface does
not rub off or blow away. but forms a
sort of hard crust of enamel upon tho
surface of the metal, and, when laid
upon boarding which ia or NAV be.
come damp, or exposed TO steam or
condensation from below. IL rusts on
both sides. The thin zines FIRST in.
troduced into this country in this wav
were rusted through; tbey then be-
came brittle, and failure was the re-.
suit. But if the zinc be of sufficient
thickness, after q certain period of
time oxidation ceases. and we have
body of solid, sound metal, cncased
above and below. by q solid coating.
thoroughly impermeable TO the acci.
dents Of weather or temperature, and
which requires no painting. To give
the exact figures as described in the
trade, No. 8 gauge is too thin. and
perishes; No. Ia gauge NAV be poner.
aly recommended as sufficient
There are various ways of laying
the zinc. First, it NAV be laid in n
corrugated form without boarding.
the trusses of iron or wood of the roof
carrying the weight; or one NAV law
it in what is called the Italian style.
on rafters about one foot, moro or less.
apart, with corrugation at each raft.
or only; or, in third manner. upon
general surface of boarding, in the
manner of lead fat, the necessary
drips, ridges, etc, provided for in The
construction, with the extra allowance
for expantion and contraction which
tho peculiar nature of the metal re-.
quires.
: Machinery is extensively used in
the manufacture. The zinc itself (of
which the best quality ia manufactured
abroad by the Vielle Montague Com.
pany, and known as "V NJ" zine J
comes over in sheets of various
gauges, about eight feet long bv about
three feet wide. This is made into
The various forms required for lavino
at the factory, before it is sent on 10
the work for fixing. Benches some
of them as long as twelve feet. are
fitted with long falling plates. lin nc.
tion they may be described as lono
and narrow guillotine y and takine
the case of forming n roll for n roof
the sheet is placed upon A fat bench
with its edge nicely adiusted unde,
the long falling slide. This il then
forced down with a powerful screw
and, with certain detail appliances
which we need not describe the rol
is formed upon the edge of the sheets
A modified application of the somf
principle, a long falling press ia used
in the manufacture of q q and trough
or semi.gutters
In o,ber caoos uhouo o..
forms are required. sucb as lions
heads. rosettes or anv similar oroh;
tectural decoration tbe worI, ia don,
by stamping; a mold and roverae or,
provided: The zinc Is stomned 70 ,b,
required form and outline in os man,
pieces as NAV be reouis;te and the,
The various parts arc soIdered ,ooe,b
or and sent away readv for fy;5o " "
Any description Of arcb;tooturai deoo
ration guiIlocbes enricbman,s ~ ~,
Kinds crocke,s and rose.,ns Cos Go,h e. T.
;c work can Tins be ef,,cisn,i, 90 ;n rr;o,
ont and sunnosin, on,, H., ~, ~,
thiekness of Zinc nsed & &;n,ha % srs, n' ~
stance il snf,ic;ent NAV ho nona;Jona Ss !"
ms PRACTICABLE imnerisb.bIo W.
oudto Tho large mold;nna and ,onn: [
on the Marouis Of Was, ,;n;s,o,.s MI v"0. o.
ato,e tho Rdlarona o'.s, ,,ass;ann G 70
~' 49, '6'"'o h"noioho, uiooNe