A pair of differently encoded function mechanisms each for operating the line feed mechanism of a printer and a pair of strippers one of which resets one of the function mechanisms after a single line feed operation and the other of which resets the other of the function mechanisms after more than one line feed operation. Similarly, a second pair of differently encoded function mechanisms each for operating the reverse line feed mechanism of the printer which are individually reset by the strippers after single and multiple reverse line feed operations.
A combined forward and reverse indexing mechanism for an automatic typewriter. A pivotally mounted actuator arm is interposed between a common cam drive mechanism in the typewriter and either a forward indexing linkage or a reverse indexing linkage. An electromagnet selectively pivots the actuator arm to engage the forward or reverse linkage and to rotate the typewriter platen in a forward or reverse direction, respectively.
An apparatus for partially overlapping the printing cycle of a printing device and the tabulating cycle of a tabulating device. The apparatus comprises means for indicating in a predetermined printing cycle if the following cycle is a tabulating cycle for starting this latter cycle before the end of the present printing cycle.
