Key cupboard with locking levers moved by electromagnets - to release keys held on rotary hooks at encoded positions for retrieval by personal magnetic card

摘要

The rectangular parallelepipedal cupboard (S) has at each position a rotor (1) carrying three hooks (2), one of which protrudes through a slot (5) so that a key or bunch of keys can be hung on it. Each rotor (1) is locked by a lever (3) coupled to an electromagnet (4). When, e.g. a magentic card is read and found to bear an approp. code, the corresp. electromagnet is energised, releasing its rotor so that the key falls by its own wt. down a chute (6). ADVANTAGE - Withdrawal of keys is simplified and observance of security precautions is guaranteed.