Abstract: Apparatus for the recording, reproducing and automatic translation of the type utilizing rectangular magnetic cards with lines of writing on their fronts and magnetic tracks on their backs explored alternatively from left to right and from right to left by a movable magnetic head, said apparatus being characterized by the fact that each line of writing on the front corresponds to two recording tracks on the back, that each upper track of a line is traversed in the direction opposite to that of the upper track of the preceding line, that each lower line is traversed in a direction opposite to the direction of travel along the upper track of the corresponding line, the apparatus being so arranged as to permit a choice between four different patterns of travel.

Abstract: Apparatus for the recording, reproducing and automatic translation of the type utilizing rectangular magnetic cards with lines of writing on their fronts and magnetic tracks on their backs explored alternatively from left to right and from right to left by a movable magnetic head, said apparatus being characterized by the fact that each line of writing on the front corresponds to two recording tracks on the back, that each upper track of a line is traversed in the direction opposite to that of the upper track of the preceding line, that each lower line is traversed in a direction opposite to the direction of travel along the upper track of the corresponding line, the apparatus being so arranged as to permit a choice between four different patterns of travel.