Evening bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1895-1912, 1906-03-17
DUPLEX PERFECTTNG PRESS
Continues from PAGE ~


foreign edition of the New York Her
aid goes out to its readers from
press similar to that which will print
the Bulletin, to Valparaiso de Chile,
where q second Duplex has lately been
erected to help in spreading the news.
The bulletins press Is comblna.
ton OF all that Is best in the Duplex
idea being. in the words of the manu-
facturers, the latest thing produced in
the Duplex line. having all the most
upto.date improvements.
THE PRESS DESCRIBED.
Technically the Duplex press is
known as a "Flat.bed Web.perfecting'
press. ii is a "fat.bed press because
the type forms from which the paper
is printed rest on fat beds. BY the
term "web.press" is meant that the
paper used Is a continuous web OF pa.
per, being fed from huge roll and not
from sheets. And the term perfect,
ing press" means that a perfect paper
is made in single operation, com.
plete in every detail. II will print at
one time either four. six or eight
pages of six or seven columns. cut,
pasted, folded and counted automati.
cally.
1t Is q solid, substantial structure,
weighing $4,000 pounds. II rests upon
solid foundation to avoid vibration.
with pit six and a half feet deep un.
der II. to enable the pressman to oh.
tain access to all parts for cleaning,
Oillng and attendance.
ONE BIG ROLL OF PAPER.
| The press prints from roll or web
OF paper which If unwound is four to
five miles long when placed in the ma
chine, and of the necessary size to
print a four, six or eight page news.
paper, as desired. The roll for an
eightpage paper is 20 inches wide and
weighs about 1000 pounds. The rolls
for this press were imported by the
paper department of the Hawaiian
News Co.
THREADING UP"
! When the press Is all ready for the
paper the process OF running 1t through
is called threading up" The paper is
started from the roll passing two or
three 'idlers" into the feed tapes,
thence through the lower bed. where
tho first impression Is made. then up
and through the upper bed. where the
last impression is made. there being
three or four pages on each bed, thus
printing all eight pages OF The
Bulletin at once. From the printing
end Of the press II passes on to the
folder, where II Is cut, pasted. folded
and counted and ready for the carrier
boys and the mails.
READY IN A FEW MINUTES.
The work OF putting the eight forms
on the press and locking them In for
printing, consumes less than ten min
utes, and the press Is then ready to
begin work. The power being on, the
lever Is pulled. the machinery ON the
press moves and the paper on the roll
continues on its way through the press.
coming back to the same end OF the
press from which II started. printed.
cut, counted, folded and pasted, II de-
sired, ready for delivery to the reader.
The process of printing in this ma.
chine takes place altogether at one end
OF the press. Here are situated the
two stationary horizontal beds already
mentioned, on which the pages of
, type are placed.
Moving backward and forward over
these beds are two impression cylin.
ders mounted upon reciprocating cross
heads and carrying rollers to guide the
web and linking rollers: the press
prints a newspaper with every half
revolution OF the driving wheel: half
the pages being printed on the lower
bed. while the paper Is passing to the
right, and half on the upper bed as the
web passes round toward the folder.
There Is thus left an interval for the
ink TO dry between the impression ON
, a given paper of the lower cylinder
and that OF the upper.
A MOST INoENIuS DEVICE.
A most ingenlus device OF the press,
, which makes II more remarkable in
, Cention than the rotary stereotype
, presses, Is the equaliZing mechanism
by which a portion of the web Is stop
ped to receive the impression from the
. type, while at the same time the paper
Is continuously entering the machine
from the roll at one end and passing
1 steadily into the folder at the other
end of its course. This Is accomplish.
, ed by looping rollers operated by equa.
H.. liZer cams which receive the constant.
a.. ly incoming papers, at the same time
y. delivering the constantly outgoing web
while the paper between these two
I looping rolls remains stationary in its
y path Of travel during the time II is be-
ing printed upon by the Two impression
cylinders.
+. Immediately after the impressions
Y are taken, and the printing is done by
!. the cylinders in their travel in either
@ direction, that portion of the web
I which has been stopped Is moved for.
}. ward the proper distance to bring suf'
y fcient blank paper for the next i'm
ha nj
o paper. After the printed web or paper
q leaves the upper eQualizing roller, II Is
a counted (pasted, II desired, and fold
4 ed and drops into the packer box" all
a completed and ready for the mail clerk
!, and carriers.
|. CHANGE OF SIZE.
r To change from a four to a SIX or
y eight'page size, no attachments what,
! ever are necessary II Is done simply
!, by the arrangement Of the page forms