Evening star. [volume] (Washington, D.C.) 1854-1972, 1881-07-16

have it ready to turn off the printed sheets
faster than the eye can follow them.
The process of stereotyping is rendered i'm
peratively necessary by the necessities of mod
ern journalism. 1t is absolutely necessary that
the flat shape of the form as it lies on the
makeup of the composing room shall be
changed to the cylindrical form of the press,
and it is as imperatiyely necessary in the inter
ests OF economy.
MILES OF STARS
roll of paper. weighing GOO or 500 pounds.
and from three to four miles i'm length is placed
at the receiving end of the machine and slides
into position easily, without requiring to be
raised up. When the edge of the web sheet
thus placed is fed into the press it passes through
the whole machine without any handling, the
devices for controlling the web being very con-
venent and complete. The paper receives its
first impression before the main impression CYL
inder, provided with set-off sheet is reached.
After receiving first impression it passes un-
derneath the first impression cylinder and over
the second, thus presenting the clean side of
the web of paper to the second plate or type
cylinder, from which it receives the second and
final impression. As the mechanical observer
views the Scott machine carefully he will notice
that the inks contained in a fountain, i'm which
fountain roller" works, giving ink to a
doctor roller. which transmits it to the first
distributing cylinder the yibrators and the other
parts, unnecessary to detail at length, which
work together to place upon the surface of the
stereotype plates just a sufficient quantity of
ink at each revolution to print two pages of the
paper.
The process of cutting and folding now COM
mences. knife placed in a longitudinal Slot in
the face of a cutting cylinder
CUTS THE PAPER TRANsvERsELY,
the leading end of the cut web passing around
the cylinder by the pressure of the atmosphere
and in this movement the Scott press realizes a
problem which has long puzzled the ablest
mechanicians. When the cylinders have made
half revolution, tie central margin of the
printed paper comes opposite the ''creaser,"
which forces it into groove in an opposite cyl
inder, where it is held by grippers which We're
previously opened by a cam to receive it. The
double edge of the sheet thus formed is then
carried around until second creaser transfers it
to grippers in third cylinder, which thus effects
the second foAi, when it passes to delivery
frame, where circular knife with serIated
edge, revolving
WITH INCOSCEINABIE RAPlD1TY.
cuts the papers in two. and flyer deposits them
on the delivery table in perfect order.
1t has taken quite a deal of space to describe
the operation of the machine. The process in a
word, when the editions of The STAR are being
worked off, is repeated 30, 600 times per hour. or
800 times per minute.
One marked feature i'm this machine is its SIM
plicity, doing away with tapes and belts pulleys.
flying cams, switches. and an endless train of
fine gearing and small wearing parts, which re-
quire constant watching and oiling The sheets
are printed out and folded without the use of
tapes or belts. Ali the principal movements are
rotary and consequently can be run at a high
speed without arrangement.
THE FOLDING
is done by rotating creasers, as the knife re-
wolves and cuts Off the sheets so the creaser re-
wolves and folds them. The folding devices
can be changed to fold different sized sheets
and different number of folds. All the parts
are easily got at, either to adjust or repair. 1t
has a superior distribution of ink. all the mixing
rollers being on the top of the machine. in view
of the pressman when standing on the floor. no
steps being required, and when the press is
standing they can all be raised, and the impress
|
getting fat-sided.
A set of plates can be put on without moving
the press. There is ample provision made for
set-ofE The whole press, including the roll and
the delivery table is only thirteen feet long, and
stands four feet high; and weighs, with its at
tachments, the dampcning and stereotype ma
| Chimes sixteen tons. 1t has heavy iron bed
plate built on q stone foundation. All the
shafts are of steel and forced into their cylinders
with pressure of twenty-five tons, besides be-
ing keyed.
wHAR n DOES.
Ne other machine In the world does such
wondrous work, no other machine combines
such compactness and simplicity There are
fewer parts in the Scott machine than in any
other, yet it performs more maneuvers ana COM
plicated functions and Is seems destined to
supercede al the great fast printing machines
nOwsh vogue.
| TIE DAMPTN0 MACHINE
The machine used for dampening the paper