A one-page dictionary entry defining the double-acting baling press, a machine with two compression boxes worked by a single follower acting alternately or by two followers acting together. It describes two examples: a double-ended toggle-lever press with flexible cord or chain suspension that presses unequal bales with equal force, and a screw press with four corner screws. Two mechanical drawings (Figs. 1690 and 1691) illustrate the text.