Lock for the passage of packets or objects between a room reserved to the public and a local isolated and protege of the public

摘要

P the invention relates to a lock for the passage of packets or voluminous objects between a room reserved to the public and a local isolated and protege this public by a partition of the safe, in use, for example, of administration, such as the stations and telecommunications, of the magazines and other set of stations, or other aerodromes. / p & & p & this lock is characterizes in that the drum 8 has at least one observation ed ris tho 11 filled by a material transparent and resistant to the test of the balls, this ed ris tho being opposite the access opening 9 in order to monitor the trades, this drum comprises, moreover, the travel end of 32, 32 and the locking means 26, 33, 33 closing automatically the drum in any one of its positions of the loading or unloading. / p