English prose literature; Exposition (Rhetoric); Readers -- Science
The machine contains, as the vital element, about sixteen hundred
matrices, such as are shown in Fig. 1, each consisting of a small brass
plate having in one edge the female character or matrix proper, and in
the upper end a series of teeth, used as hereinafter explained for
distributing the matrices after use to their proper places in the
magazine of the machine. There are in the machine a number of matrices
for each letter and also matrices representing special characters, and
spaces or quadrats of different thicknesses for use in table-work. There
is a series of finger keys representing the various characters and
spaces, and the machine is so organized that on manipulating the keys it
selects the matrices in the order in which their characters are to
appear in print, and assembles them in a line, with wedge-shaped spaces
or justifiers between the words. The series of matrices thus assembled
in line forms a line matrix, or, in other words, a line of female dies
adapted to mold or form a line of raised type on a slug cast against the
matrices. After the matrix line is composed, it is automatically
transferred to the face of a slotted mold into which molten type-metal
is delivered to form a slug or linotype against the matrices. This done,
the matrices are returned to the magazine and distributed, to be again
composed in new relations for succeeding lines.
[Illustration: Fig. 2.]
Fig. 2 illustrates the general organization of the machine.
_A_ represents an inclined channelled magazine in which the matrices are
stored. Each channel has at the lower end an escapement _B_ to release
the matrices one at a time. Each of these escapements is connected by a
rod _C_ and intermediate devices to one of the finger-keys in the
keyboard _D_. These keys represent the various characters as in a
typewriter. The keys are depressed in the order in which the characters
and spaces are to appear, and the matricies, released successively from
the lower end of the magazine, descend between the guides _E_ to the
surface of an inclined travelling belt _F_, by which they are carried
downward and delivered successively into a channel in the upper part of
the assembling elevator _G_, in which they are advanced by a star-shaped
wheel, seen at the right.
The wedge-shaped spaces or justifiers _I_ are held in a magazine _H_,
from which they are delivered at proper intervals by finger-key _J_ in
the keyboard, so that they may pass downward and assume their proper
positions in the line of matrices.
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