An anti-theft locking device for vehicles includes an annular locking sleeve mounted concentrically about and normally in frictional engagement with the vehicle steering shaft. The knob has a longitudinally aligned key slot that receives a complimentary shaped key. In one embodiment, the support linkage is defined by first and second spring members and which engage the seat frame. The COFDM scheme employed by the present invention overcomes the degradation of multipath fading induced by terrestrial channels, such as the Ultra High Frequency broadcast channel. A second valve is attached to the base and is in fluid communication with the receptacle. The invention relates to an improved method for de-acidifying paper.