As the matrices approach the line, their upper ends are carried over a
spring _g3_, projecting through the assembler face-plate from the
rear, as shown in Fig. 7, its purpose being to hold the matrices forward
and prevent them from falling back in such a manner that succeeding
matrices and spaces or justifiers will pass improperly ahead of them.
The descending matrices also pass beneath a long depending spring
_g4_, which should be so adjusted as barely to permit the passage of
the thickest matrix.

[Illustration: Fig. 8.]

[Illustration: Fig. 9.]

After the composition of the line is completed in the assembling
elevator _G_, as shown in Fig. 8, the elevator is raised as shown in
Fig. 9, so as to present the line between the depending fingers of the
transfer-carriage _N_, which then moves to the left to the position
shown by dotted lines in Fig. 9, thereby bringing the line into the
first elevator _O_, which then descends, carrying the line of matrices
downwards, as shown in Fig. 10, to its position in front of the mold and
between the confining jaws _P_, _P_, mounted in the main frame, which
determine the length of the line.

Figs. 11 and 12 show the casting mechanism in vertical section from
front to rear. When the first elevator _O_ lowers the line, as just
described, the mold and the pot _M_ stand in their rearward positions,
as shown in Fig. 11.

[Illustration: Fig. 10.]