Outlet device for shopping trolleys

摘要

The figure shows the magazine (1) with a supply of trolleys (2) locked against any unauthorised removal. Removal is controlled by an automatic machine (3), with locking arms (4) suspended so that they can rotate about a vertical axis and engaging with the trolley until released. The machine possesses an aperture (5) for banknotes and a slot (6) for coins and also opening for the return of coins (7). The aperture possesses a unit for checking the genuineness of the notes and a collector. Other figures show the computer and the internal layout of the machine.