Coin-box for telephone, has armor arranged between walls of housing and door and made of mixture of non-metallic hard material and steel balls that are firmly bonded or positively connected with one another by melted copper granulates

摘要

The box has a door hinged in a housing and comprising a locking device to lock the door, where sidewalls (2), upper and lower sides (5) and the door are designed as double-walled structure. Armor (6) is arranged between walls (9, 10) of the housing and the door, where the armor is made of a mixture of non-metallic hard material (7) and steel balls (8). The balls are firmly bonded or positively connected with one another by melted copper granulates.