15.
The distributor box also contains on opposite sides shorter rails,
_u4_, adapted to engage the lower ends of the matrices, to hold them
in position as they are lifted. The lifting finger _V_ is mounted on a
horizontal pivot in one end of an elbow lever mounted on pivot _v2_
and actuated by a cam on the end of one of the carrier-screws, as shown
in Figs. 2 and 15.
TRIMMING-KNIVES
In practice there is occasionally found a slight irregularity in the
thickness of slugs, and thin fins are sometimes cast around the forward
edges. For the purpose of reducing them to a uniform thickness, they are
driven on their way to the galley between two vertical knives, as shown
in Figs. 4 and 16. The inner knife is stationary, but the outer knife is
adjustable in order that it may accommodate slugs of different
thicknesses. This adjustment is made by the knife being seated at its
outer edge against a supporting bar or wedge, having at opposite ends
two inclined surfaces seated against supporting screws in the
knife-block. A lever engages a pin on the wedge for the purpose of
moving it endwise; when moving in one direction, it forces the knife
inward toward the stationary knife, and when moved in the other
direction, it forces it to retreat under the influence of a spring
seated in the block.
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