Avoiding bill being extracted apparatus

摘要

The present invention describes an apparatus for preventing extraction of a bill from a money exchange machine. This apparatus uses a main roller, an auxiliary roller, two supporters, a lead board and a protection board. The two ends of both the main roller and the auxiliary roller are set in the two supporters for rotation. The main roller and the auxiliary roller rotate in opposite directions and a channel exists between them. The main roller is made of a plurality of round boards. A bump is extends from part of the surface of each round board. A lead board is located behind the main roller. A channel is formed between the main roller and the lead board.