Abstract: A lock, such as a padlock, is provided with a single, spring biased end journaled bolt for operably interconnecting a shackle with a magnetic key controlled, locking-unlocking mechanism.

Abstract: A lock includes pivotally supported tumbler pins having magnetically attractable ends normally disposed in one of several locked positions arranged along prescribed paths of travel, but movable under the influence of a key to assume combination setting or unlocked positions arranged along their paths of travel; and a tumbler pin end engaging plate rotatable between locked and unlocked positions when the tumbler pins are disposed in their combination setting positions.

Abstract: In a magnetic lock of the type having at least one tumbler pin pivotally supported on a mounting plate and a locking plate having an opening arranged to receive one end of the tumbler pin when an opposite end of such pin is attracted by a permanent magnet device carried by a key, the improvement wherein the opposite end of the tumbler pin is formed with a transversely enlarged head portion and the mounting plate is formed with abutment devices arranged to engage with the head portion to insure that the one end of the tumbler pin accurately "points" towards the opening of the locking plate.

Abstract: In a coin operated lock unit having a coin operated patron key lock adapted to effect locking of a cabinet door, the improvement featuring adjustment of the patron lock to accommodate different coin denominations, as well as varying numbers of coins of each denomination.