The Boy's Book of Industrial InformationNoyce, Elisha
General
The Boy's Book of Industrial Information
Noyce, Elisha
Industrial arts -- Juvenile literature; Technology -- Juvenile literature
But the process, as conducted by hand (fig. 5), will give a much
better notion of how paper is formed from the pulp. A reservoir, A,
is filled with pulp, which is supplied by a wheel in the box B, to a
strainer C, and passed to a vat D, and a man, E, takes in his hands a
mould consisting of a shallow frame of wood of the size the sheet of
paper is to be, having a bottom of fine wires laid side by side, and
having wires crossing at intervals to keep them firm (the marks of
these may be seen in any sheet of laid foolscap paper held up to the
light); he dips this mould edgewise into the reservoir, and brings
it up horizontally full of pulp; this he gently shakes, to make the
pulp lie level and allow all superfluous water to drain through the
wires. It is then handed to another man H, who has a sheet of flannel
or felt spread out on a table F G, on which the mould is inverted,
and the sheet of pulp left on the flannel, which sucks up more of
its moisture; over this is placed another piece of flannel, and then
another sheet of pulp on it, and so on to the number of five or six
dozen F, then the whole is put into a powerful press, and screwed
down till all the water is squeezed out, when they are pretty firm,
and are lifted out and hung on lines to dry, after which they are
immersed in a cistern filled with thin size made by boiling clippings
of skin in water (see “Glue and Size”), and having some alum
dissolved in it--they are once more pressed and dried. What is called
“hot-pressed” paper is pressed between smooth sheets of pasteboard,
having a hot iron plate placed between every three or four dozen
sheets of paper; this gives a smooth surface to the paper. The names,
dates, and other marks seen on hand-made paper are formed by wires
worked into the bottom of the mould, which, projecting, make the pulp
thinner in those places. The water-mark of Bank-notes is made in the
same way. More than half-a-million sterling is paid annually for duty
upon paper--so vast is the consumption!
MALT.
Public-domain text, read in full here on John Shaqi.
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