Box primitive roulette lottery. (Machine-translation by Google Translate, not legally binding)

摘要

The roulette of primitive lottery box has a round box with a window on top v face, where are displayed numbers, and gear two gears, ayb, parallel with internal spur teeth, hosted in inside. By the side of the box stands a part of the area toothless wheel a, on which the impulse of rotation (fig.1) se dara. Wheel a (fig.2) through the zone timing is transmitting the wheel turning movement b dado initially. This wheel b, through its toothed area, will movement and hara the numbers written around the perimeter circular on top face area toothless (fig.3), go past the window v until cese the turning and then move from window will be such a number. Diameter of the timing zone a is greater than that of b, for this form to a child spinning a concern one over b, which means that numbers pasanvelozmente the window and can not be identified to curb the wheel a. (Machine-translation by Google Translate, not legally binding)