Burlington weekly free press. [volume] (Burlington, Vt.) 1866-1928, 1873-04-18

They are now az last, as we trust and be
lieye, in a way to reap the reward Of then
/ per>ey ennce.
THE PAPER XIIL.
The company occupy forrheir main build
inc the brick building originally erected
for the nail mill at 1.-THE Cove" This /.
IlOby 10 feet. 1t has been enlarged by an
addition pc by Is feet, and a boiler house
% by 10 feet \ new storehou-e for paper
is to be erected this season.
THE PROCESS
is that patented under four or five patents.
by Prof. A. X. Eaton, chemist, Of the Packer
Institute. New York, and consists chiefly in
process Of grinding the shaving~ in
alkali
The -la,ing-, collected from the planning
mills. are raised by an elevator to reccpta-
cle- on a floor overhead. from which through
suitable channel, opened and closed at will
they are poured into immense rotary boilers
[ These are great CYLINDERS Of boiler-iron, >u~-
pended on axles at each end. There are
two Of them. each capable Of holding 900
/ gallons. or two tons of shayin-- Pipes
pas, through the centres Of the azle,, by
steam tight joints, to admit steam 70 the
boilers Thcalkali is added o. the -laring~
in fixed proportions soda ash was origin
ally used. but at present >ulphite of sodium
is used. being cheaper. and found to answer
excellently. The boilers are made 70 re-
yo.ye slowly on their azies, by belts. az the
rate Of about one revolution in five minutes.
This process j. continued for from six TO
eight hours. by which time the combined
action ofthe alk,H. steam and motion, has
extracted the resin and reduced the shay
ing, To- condition in which they may De
easily rubbed or ground to pulp.
The shaving, are then placed in the grind
ing mills. These are something like great
coffee mills. the grinding being done by
plates Of hardened iron, grooved Ike
Burr milestone. revolving 10 iron cylinders.
Steam pipes passing down into the mass,
supply steam and heat. which aid the pro-
cess of grinding. The shayings are thus re- /
duecl to a iibrou- pulp. There are seven of /
these mills. From these tile pulp is COM /
vcyei By trough- 90 a common paper "beat- |
ing machine, in which the pulp is further .
beat up and the a.kali and Impurities re- I
naming. are washed ont In this machine /
the wood pulp is mixed with from 80 to 90
per cent. Of pulp obtained by beating up ola
brown paper Thi, addition of paper pulp /
is not indispensable. some Of the strongest
paper made by the company having been
made purely from tile wood pulp. The mix
.ure Is found, however. % work very well.
and is used at present, 10 preference topure
wood pulp.
From the beating machine. thepulppa~-e,
10 " Jordan engine. such as are in com-
non use in paper mills for grinding puip.in
which it is ground still finer. From thence
{ passes to large tanks under the floor It
s now ready to be made into paper. This
, done hya
roUEDRINTEE MACHINE.
This machine, the invention of a French
nan from whom it takes it, name. is in
what the rotary steam press
s in printing It, Introduction increased
he capacity Of productionalmo, indefinite
y. The one in use by the Burlington
'aper Co. Is great affair, no les than IS
sct long. At first glance il looks ike an
immense collection of revolving rollers Of -
ariouS sizes Examining more closely We
nd that it, parts are first a powerful force ,
amp which pumps up the pulp. of con- +
-tency Ike thieki~h cruel. To reservoir ,
'om which it runs into screens, which have q,
sharp iarriHg motion. Through the In -.
.rStices in the screens the pulp drop, upon ,
long endless belt or apron Of wire eauze. -
hich passes slowly along receiving a coat +.
2 of the pulp, the thickness Of which is
gulated by valve The whole apron has
quick lateral motion to and fro which |
ryeS to distribute the pulp more evenly. /
: the pulp passes along on the apron some -.
the water drips ont Of it through the
uze, aided by sucking boxes, over which
e apron passes, by which current Of air
sucked down through the pulp After o.;
coming thus partially dried, the sheet of 81
lip, not yet strong enough to bear is O
light, is transferred to an apron of felting ri
lieh carries it under rollers. which give it 50
eater consistency. Thence it passes to II
other apron Of canvas, carried along by Is
lich the sheet passes round five or six cyl TT
lers, heated by steam, which complete m
: drying process. Ii leaves them sheet is
paper, only lacking smoothness of sur to
e. This is given by passing it between 1t
} calenders, or heated rollers of polished oh
tai. From these the sheet passes to the n,
diving shears, which cut it into suitable on
ID sheets for use. As it drops from these
; piled by girls, counted into reams and
up for sale. The machine Is capable -
making a sheet six feet wide, and of NJ
efinite length, all the processes going on oil
from the pumping in of the Me
P at one end TO the cutting the paper 81
} sheets at the other 10
he article now making by the company No
wrapping paper, suitable for hardware, iay
Tor other purposes. Itappears to be an cos
client article, and as the shavings cost the
about One-tenth as much as straw, the yea
nuiacture, we think, cannot but be wv
liable. By bleaching the pulp, of pie
rse white paper can be made, and We HI
G in due time to see good printing paper put
lie in the eompany's mills from pine raj
rings roa
he power for the mill is conveyed from gar
marble mill, by long line of shafting. nee
steam for the process of manufacture is \
lished by sixteen-feet tubular boiler
perior affair of its kind, made by Pit -00
Brothers, of Hartford, Conn. The 200
ding mills were made by B. $ Nichols pun
0. The heater and Jordan engines were
e by j. Cornell Il Co., of Sandyhill, n. PV =,
makers of paper machinery, who also Mo-
up the Fourdrinier machine. the
lie mill Is under the capable superinten- mel
e OF Mr.. E. L. Pratt, who has given his The RI
and persevering energy to the enter gres
ior two years, and to whom we ac gait
Wedge our indebtedness for courteous lOde
age about the mill, and information in still
rd to the process of manufacture. NUN
our next article on the Industry of yOul
lngton, we shall describe the new mar of j
I'LL. TEN