Bag of tricks. Carries unpleasant surprises for bank robbers. Innocent in appearance, a new bag used by American bank passengers is as full of surprises as conjuror's hat, and they're not half as pleasant. If the messenger is approached by a thief, a pull of a little ring attached to the bag sets in motion a mechanism which fires four shots. If the bag is snatched, a dense cloud of yellow smoke belches from it. The smoke is harmless. In open air, but if the Robert carries the bag into a car for a getaway the fumes become overpowering and he is forced to get out, leaving the bag behind. Photo shows, how the bank robber would be forced to leave the belching bag, which is still sending out clouds of smoke (left).. 11 January 1938