Abstract: An anti-theft system for the protection of a bag of papermoney or the like being transported from a bank safe to a waiting valuables transport vehicle, having a security apparatus for marking or otherwise making useless the papermoney or for giving an alarm in the case of attempted theft. At least one stationary transmitting unit is used for radiating radio waves along the path of transport for being received by a receiving unit on the money bag. The security apparatus is put into operation when the receiving unit no longer receives an agreed information pattern from the transmitting unit, which undergoes comparison with information regenerated at the same data rate from a shift register at the container.In one form of the system, the information to be transmitted and to undergo comparison is produced by the transmitting end and stored sequentially in solid-state memories at a high data rate at the transmitting and receiving ends of the system before each transport operation.

Abstract: The pulse generator comprises a rotating transparent disc having a line pattern along its circumference and which is moved past an equally spaced line pattern of a fixed disc segment. The line patterns are scanned photoelectrically and the light-dark changes are converted into corresponding electrical pulses. The rotating disc and the disc segment are formed of thin plastic sheeting, and the rotating disc has two metal discs secured to respective opposite sides thereof out of the area of the line pattern thereon. One of these discs is formed with a peripheral groove into which the disc segment, which is fixed to a base, extends and bears against the rotating disc. The line patterns are provided on the outer surfaces of the disc and disc segments, whose inner surfaces are in surface-to-surface engagement to slide on each other in the area of the patterns under a slight pressure.