Abstract: A random number selector device includes a plurality of disks rotatably mounted about a common axis. A first disk includes an outer ring divided into segments where each ring segment contains one or more number arranged sequentially around the disk. A second ring of ring segments is disposed concentrically within the first ring. The ring segments of the second ring include letters arranged alphabetically around the disk. A second disk superimposed on the first disk includes a pointer and a plurality of ring segments, each ring segment includes one or more random numbers. A third disk is superimposed over the second disk and includes a window to view one of the random numbers on the second disk.

Abstract: A bicycle auxiliary power unit is provided wherein hand powered levers provide a mechanical means for transposing the natural power strokes of the rider to the mechanism propelling the vehicle. The auxiliary power unit provides a means for permitting a street bicycle to be utilized for exercising the upper and lower extremities.