Abstract: A feeding system for difficult web and sheet materials, such as bubble wrap. A drive roller having a high friction surface is spaced over a flexible platen having a low friction transport surface. The gap between the platen and the drive roller is adjustable, and the drive roller is driven to advance web and sheet materials between the drive roller and the transport surface. The transport surface has a very low coefficient of static friction, and the surface of the drive roller has a very high coefficient of static friction, with the coefficients of friction differing by at least 0.5.

Abstract: An electronic interlock for providing improved security in a revenue collection receptacle includes a mechanism on a removable cash container for generating a coded electronic signal which is coupled to a mechanism for decoding the coded signal mounted to the receptacle, and a mechanism responsive to the decoding mechanism which prevents revenue from being transferred to the cash container unless the decoding mechanism detects the presence of the coded electronic signal.