Paper & paper making, ancient and modernHerring, Richard
History
Paper & paper making, ancient and modern
Herring, Richard
Papermaking
The large drum (_b_), over which the paper passes, in the direction
indicated by the arrows, has simply an alternating motion, which
serves to gather the paper in such lengths as may be required. The
crank arm (_c_), which is capable of any adjustment either at top or
bottom, regulating the extent of the movement backwards and forwards,
and thus the length of the sheet. As soon as the paper to be cut
off has passed below the point (_d_), at which a _presser_ is
suspended, having an alternating motion given to it, in order to make
it approach to, and recede from, a stationary presser-board; it is
taken hold of as it descends from the drum, and the length pendant
from the presser, is instantly cut off by the moveable knife (_e_),
to which motion is given by the crank (_f_), the connecting rod
(_g_), the lever (_h_), and the connecting rod (_i_). The combined
motion of these rods and levers, admits of the moveable knife (_e_),
remaining nearly quiescent for a given time, and then speedily
closing upon the fixed knife (_k_), cutting off the paper in a
similar manner to a pair of shears, when it immediately slides down
a board, or in some instances is carried along a revolving felt, at
the extremity of which several men or boys are placed to receive the
sheets, according to the number into which the width of the web is
divided.
As soon as the pressers are closed for a length of paper to be cut
off, the motion of the gathering drum is reversed, smoothing out
the paper upon its surface, which is now held between the pressers;
the tension roll (_l_), taking up the slack in the paper as it
accumulates, or rather bearing it gently down, until the movement of
the drum is again reversed to furnish another length. The handle
(_m_), is employed merely to stop a portion of the machinery, should
the water-mark not fall exactly in the centre of the sheet, when by
this means it can be momentarily adjusted.
The paper being thus made, and cut up into sheets of stated
dimensions, is next looked over and counted out into quires of 24
sheets, and afterwards into reams of 20 quires; which subsequently,
under the superintendence of an Excise Officer, are carefully weighed
and stamped, previously to their being sent into the market.
Connected with the manufacture of paper, there is one point of
considerable interest and importance, and that is, what is commonly,
but erroneously, termed the _water-mark_, which may be noticed in the
Times Newspaper, in the New Bank of England Notes, Cheques and Bills,
as also in every Postage and Receipt Label of the present day.
Public-domain text, read in full here on John Shaqi.
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