On the top of
the ram head there is a loose lashing plate, which, at the finish of
the action of the rams, is locked in the cell by bolts actuated by a
suitable locking gear. While in this cell the bale has the lashing
ropes put round it, and then it is placed under the large rams for the
final squeeze, during which the ties or ropes are permanently secured.
Thus neither of the small presses has even to wait while its box is
being filled, or while the previously pressed bale is being lashed.
Even in the large press, when the ties are finally fastened, the time
occupied does not exceed three-quarters of a minute, and is often much
less.
[Illustration: COMPOUND HYDRAULIC PRESS. FIGS. 3 and 4.]
This press is shown in Figs. 3 and 4. The small rams are arranged at
either side of the large ones, which, in this case, are not inverted.
To each of the smaller presses there is a pair of boxes mounted on a
vertical column, around which they can revolve to bring either box
over the rain head. When the left hand rams rise, the material is
delivered into the cell, D, which previously has had its doors (Fig.
4) closed. To permit of the cell, D, being moved out of the way, it is
mounted so that it can revolve on one of the columns of the main
press, first into the position shown at B (Fig. 4), and afterward to C
(Fig.
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