Abstract: A computerized handwriting duplication system includes a general purpose, programmable, digital microcomputer having a buffer memory, a program memory for a computer program, and a memory for storing the digital representation of the coordinates of a signature. The system also includes a digitizer pad for providing to the microcomputer as raw data the X and Y coordinates of points travelled by a pen writing a signature thereon and for providing a keyboard-type of input information to the microcomputer.

Abstract: A multi-directional canted wheel carrier with shiftable control arm for supporting operable wall panels from upper and/or lower supporting tracks, with the control arm engaging a track slot or guideway and supported from the carrier for shifting when necessary between a leading and a trailing relationship to the panel supporting bolt to facilitate multi-directional movement of the carrier through track intersections. The carrier includes a single canted wheel or multiple canted wheels, and the bearings and tilt body structure of the canted wheel assembly provide efficient multi-directional movement of the carrier with minimum force requirements.