CHAPTER XII.

_MAKING PAPER BY HAND._

The Vat and Mould.--Making the Paper.--Sizing and Finishing.

Under the old system of making paper by hand, the rags were

reduced to a fine state of division by a process of _retting_, or

slow putrefaction. The rags were first washed in water, and then

piled in heaps, in which condition they were allowed to remain

until they became tender, that is, readily pulled asunder by the

fingers. During the decomposition the rags not unfrequently became

rotten in some portions of the heaps, thus involving considerable

loss of fibre. The rags were next placed in a strong chest, in

which iron-shod stamping rods were fitted, and these by their

continued action gradually reduced them to a pulp. The stampers

were eventually superseded by the beating-engine, the invention

of a Dutchman, which received and still retains the name of the

"Hollander." Other machines, as the duster, washing and breaking

engines, and the beating engine, have entirely taken the place of

the older system, which required the work of forty pairs of stamps

for twenty-four hours to produce one hundredweight of paper.

=The Vat and Mould.=--The pulp being prepared, is conveyed from

the beaters to the working vat, where it is diluted with water.

The vat is a wooden or stone vessel about 5 feet square and 4

feet deep, being somewhat wider at the top than at the bottom. A

steam-pipe is supplied to the vat, so that the pulp and water may

be heated to a convenient temperature for working, and an agitator

is also furnished to keep the pulp and water uniformly mixed. The

mould in which the pulp is raised from the vat to form a sheet of

paper, consists of a wooden frame, neatly joined at the corners,

with wooden bars running across, about 1½ inch apart, and flush

with the top edge of the frame. Across these again, in the length

of the frame, wires are laid, about fifteen or twenty in an inch,

which are placed parallel to each other. A series of stronger

wires are laid along the cross-bars, to which the other wires are

fastened; these give to what is termed "laid" paper, the ribbed or

"water-marked" lines noticeable in hand-made paper. Upon the mould

is fitted a movable frame, called the _deckle_ or _deckel_, which

must fit very neatly or the edges of the paper will be rough. The

mould and deckle form together a kind of shallow tray of wire.

Sometimes the mould is divided by narrow ribs of wood, so that two

or four sheets of paper may be made in one operation. Connected

with the vat is a slanting board, called the _bridge_, with copper

fillets attached lengthwise upon it, so that the mould may slide

easily along the bridge.

=Making the Paper.=--When preparing for work, the vat-man stands

on one side of the vat, and has on his left hand a smaller board,

one end of which is fastened to the bridge, while the other rests

on the side of the vat. An assistant, called the _coucher_, is at

hand, whose duty it is to handle the frames or moulds containing

the pulp after they have passed through the hands of the vat-man or

maker. The latter now takes in his hand a mould, and lays it upon

the deckle; he then dips the mould, with its deckle in its proper

place, into the vat of agitated pulp, and lifts up as much of the

pulp as will form a sheet of paper. This, as will be readily seen,

requires the greatest dexterity, since the workman has nothing

but his sense of feeling to guide him. It is said, however, that

practice gives him such a nicety of feeling in this respect that

he can make sheet after sheet of the largest-sized drawing papers

with a difference in weight of not more than one or two grains in

any two of them. Great skill is also required to hold the mould in

a perfectly horizontal position, otherwise during the felting and

settling of the pulp the sheet of paper would be thicker on one

part than another. The mould being held lengthwise, that is, with

the long parallel wires running from right to left hand, he gives

the mould a gentle shake from his chest forward and back again,

which is called the _fore-right shake_; this shake takes place

across the wires, not in the direction of their length. He next

gives a shake from right to left, and back again, the respective

movements thus propelling the pulp in four directions. The vat-man

now pushes the mould along the small board on his left, and removes

the deckle, which he connects to another mould and proceeds to

form another sheet of paper, and so on. The coucher, taking the

first mould in hand, turns it upside down upon a piece of woollen

felt-cloth, then removing the mould, he takes another piece of

felt and lays it over the sheet and returns the mould by pushing

it along the bridge to the vat-man, when he receives in return a

second mould to be treated as before.

In the above way felts and paper are laid alternately until a

pile of six or eight quires is produced, which is afterwards

submitted to pressure in a very powerful press. When sufficiently

compressed, the machine is relaxed, and the felts are then drawn

out, on the opposite side, by an operative, called a _layer_, who

places the felts one by one upon a board, and the sheets of paper

upon another board. The coucher then uses the felts again for

further operations. Two men and a boy only are employed in this

part of the work. In the evening all the paper made during the

day is put into another press, and subjected to moderate pressure

to obliterate the felt marks and expel a further portion of the

water. On the following day the paper is all separated, which is

called _parting_, again pressed, and is then transferred to the

drying-loft. The drying is effected by suspending the sheets of

paper upon a series of ropes, attached to wooden supports; ropes

of cow-hair are used for the purpose, as this material does not

stain the paper.

=Sizing and Finishing.=--When the paper is dry, it is taken down

and laid carefully in heaps ready for sizing, which is the next

operation to which the paper is subjected. The preparation of the

size from animal skins, etc., is described in Chapter XI. When

preparing to size the paper, the workman takes several quires of

the paper, and carefully spreads the sheets out in the liquid size,

which is placed in a large tub, taking care that each sheet is

uniformly moistened before introducing the next. The superfluous

size is afterwards pressed out, and the paper then "parted" into

separate sheets, which are again subjected to pressure, and finally

transferred to the drying-room, where they are allowed to dry

slowly. When dry, the paper is conveyed to the finishing-house, to

be again pressed and looked over by women, who, being furnished

with small knives, pick out knots and other imperfections and

separate the perfect from the imperfect sheets. The paper is now

again pressed, and then handed to the finisher, to be counted into

reams and packed, the reams being afterwards pressed and finally

tied up and conveyed to the warehouse for sale. When the paper is

required to be hot-pressed, this is done by placing each sheet of

paper alternately between two smoothed sheets of pasteboard, and

between each group of fifty pasteboards is placed a hot plate of

iron, and the pile then submitted to heavy pressure, whereby the

surface of writing paper acquires a fine, smooth surface.

The Art of Paper-Making A Practical Handbook of the Manufacture of Paper from Rags, Esparto, Straw, and Other Fibrous Materials, Including the Manufacture of Pulp from Wood Fibre · 第 12 / 22 章