Abstract: A two-stage tumbler lock wherein there are two sets of discs, one set being actuatable by a key to free the second set for unlocking movement under the influence of the key. The invention also contemplates a lock designed to receive a peripheral key to cause the above operations.The invention further contemplates a dog leg key particularly a peripheral dog leg key for effecting the above operations.The invention still further contemplates a lock having a peripherally located reset member which makes picking most difficult. A further feature of the lock and its key is that the two coact to perform their intended functions in a manner such that the key cannot be withdrawn from the lock until it is returned to the position it first assumed when inserted into the lock.Another feature of the invention is a disc lock in which the discs have spaced lugs defining the extent of disc movement in regard to a locking member.

Abstract: A safe having a base plate to be covered by a hingedly mounted hood which can be locked in place by a lock carried by the hood, wherein the locking element carried by the hood not only fits under a retainer element on the base plate but also fits in a slot in the hood.