Abstract: A portable data processing device has a housing, a display, turnable holding arms arranged to hold the display above an upper side of the housing. Each of the holding arms has a holding arm-extension part provided with a blocking slider. The housing and the holding arm have locking recesses. The blocking slider has a first blocking portion which in one end position engaging in the locking recess of the holding arm and a second locking portion which in another end position engages in the locking recess of the housing. The blocking slider is spring biased in direction toward the locking opening of the holding arm and fixed in a locking position which is opposite to a spring force. The device also has a turning arm which locks the blocking slider in the locking position. The display is turnable and vertically movable between two different positions.

Abstract: An illuminating device has a bar-shaped light, a light conductor plate and a U-shaped clamping part having two legs. The clamping part extends along the bar-shaped light and connects the light with the light conductor plate so that the clamping part embraces the light and a neighboring edge region of the light conductor plate in a U-shaped manner and the legs are elastically fixed on the light conductor plate.

Abstract: A platen for typewriters or similar machines comprising a platen tube with a resilient outer cover and having stub shaft assemblies press fitted into each end. Each assembly comprises a circular end piece having a central bore into which a stub shaft is press fitted, and a circular plate having a central depression into which one end of the stub shaft is press fitted. The arrangement allows for a platen construction of few easily produced parts which can be easily assembled to provide an inexpensive assembly.

Abstract: Apparatus for lifting print and correction ribbons in typewriters or printers having a bidirectional motor for driving a lift lever coupled to lift, according to the direction of rotation, either the print or correction ribbon, as required. In order to be able to use a relatively weak motor, the lifting movements of the lift lever driven directly by the motor are transmitted directly to the print or correction ribbon guides without interconnecting members. Print ribbon feed is implemented by means of camming surfaces on the lift lever operating to feed ribbon during the return movement of the print ribbon to rest position below the printing line.