Ascending register lockout system for a postage meter

Abstract

The invention is for an improved security system for a postage meter, which features an ascending register lockout. Most commercial postage meters contain ascending and descending registers which keep an accounting of the meter's use. The lockout for the ascending register is disposed in combination with, but functions independently from, a descending register lockout also located within the postage meter. Both lockout devices use a locking comb arrangement to sense when a postage value lockout position is reached by their respective register wheels. The descending register lockout provides a pivoting cam to block a shutter bar window when a descending register lockout condition is sensed. The ascending register lockout system provides a slide bar for blocking the shutter bar window when an ascending register lockout condition is sensed.