River Falls journal. [volume] (River Falls, Pierce County, Wis.) 1872-2019, 1881-02-10

stations are private boxes combining
police and fire alarm calls, which are
to be placed in stores, offices and dwell
lings at a cost of about $50 each. These
boxes are so small that they can be set
in wall, behind desk, or under a
counter, and noiseless alarm given,
which will not disturb the thief or
swindler until the officers arrive TO
make the arrest.
Fire alarms can be given in the same
manner, and registered Mt the head
quarters of the fire department in one
second after the alarm is turned in
Scientific american.
PAPER PULP From WooD.-The fol-
lowing interesting description of the
process of making wood pulp is from
an account of the opening of the
Thorold Pulp paper company's estab-
lishment, published by the Thorold
Post, Canada:
'The wood, four feet in length, and
of any thickness, is brought in at the
basement, placed in the barkingjack
Zone stick at a time), where two men,
with draw knives, rapidly peel off the
bark. 1t is then conveyed by the
elevator to the first floor, sawed in two
foot lengths with cross-cut saws, passed
on to the rip saw, where it is stabbed
THAT is, a small portion of wood on OPP
posite sides taken Off, to permit it
resting firmly in the grinding engine
1t is then passed to the boring machine
IAN upright one-and-a-half inch anger,
with foot attachment, driven by pow
er), where the knots are bored out
The wood is then placed in racks of
the same size as the receptacle in grind
ing engine and carried out to be
ground. The grinding engines are up
right, and receive at a filling one-twen-
tieth of cord of wood. The wood is
placed in a receptacle, and by sim
pie, variable, automatic feed process
is pressed fiatwise between two out
ward revolving rolls, composed of solid
emery, which are flooded with spray
of water, carrying off the fibrilized pulp
in stream through revolving screens
to the tank or stuff-chest in the base
ment. 1t is then pumped up into a
vat that forms part of the wet machine.
In this vat is constantly revolving a
large cylinder faced with fine brass
wire cloth, which picks up the particles
of pulp out of the water and places
them on the felt Tan endless piece of
wooden goods which make between
rolls, for different purposes, a continual
circuit of the wet machine). On the
cylinder is turned heavy roll, called
the couch; between the two, where
they meet, the cylinder leaves the pulp,
with the most of the water pressed
from it. The pulp now makes its APP
pearance on the felt above the concha
roll in q beautiful sheet, thirthy-eight
inches in width, and is carried along III
steady flow distance of about eight
feet, where it passes between (the wa
ter here again being pressed from it,
but not beyond two heavy rollers, the
upper iron, the lower wood: it adheres
to the upper roll, which is constantly
turning, wrapping it up, and when a
sufficient thickness is attained, is cut
off by a knife being pressed to the
roll, attached to the machine for that
purpose. 1t now leaves the roll in a
thick white sheet, 36x38 inches, which
is received by the boy in attendance
on table conveniently attached to the
machine and folded into sheets 14x26
inches. 1t is then placed on scales
until the weight is 100 pounds, when it
is placed in the press, and firmly tied
into square compact bundles. 1t is
now ready for shipment to the paper
mill to be made into printing and tea
paper. The wood paper pulp has
been placed in the market and found a
ready sale. Recently a contract to the
amount of 81 900 was made with one of
our large paper mills"