Kumahira Safe Co., Inc.

Eiro Naruto

Hiroshi Masachika

Makoto Nishikawa

Kazuyuki Oki

Hiroaki Tomoda

Kouichi Hirano

Takeo Inada

An improved clock lock of the type using an electronic timer circuit as clock mechanism is disclosed. A locking member is actuated toward the unlocked state in response to unlocking signal generated by the electronic timer circuit. The clock lock includes motors adapted to be activated in response to unlocking signal, cams in operative association with the motors, a movable plate normally held in the locked state in the casing to move toward the unlocked state by means of a first cam when any one of the motors starts its rotation, a locking member normally held at the locked position on the movable plate in the casing to turn to the unlocked position by the effect of moment caused by its own dead weight when it is released from the locked state, and a motor driving circuit which is so designed that none of the motors is activated toward the locked state as long as any one of the motors has failed to finish rotation toward the unlocked state by means of microswitches which are in operative association with second cams. Usually, the locking member is designed in the form of an unbalancedly weighted lever. The first cam is preferably designed in the form of a circular cam which is eccentrically mounted on the cam shaft, while each of the second cams is designed in the form of a sector cam. One of the second cams is mounted on the cam shaft at a delayed angle relative to other ones.

Clock lock

An improved after hour depository of the type including a throw-in door turnably housed in the frame is disclosed. A control panel is disposed on the frame at the position located adjacent to the throw-in door to control turning movement of the throw-in door. A magnetic card is previously allocated to a client by the bank and when he visits there, he inserts his magnetic card into a card insert slit on the control panel. A control circuit having a number of informations concerning all clients stored therein is electrically connected to the control panel. A locking and unlocking apparatus is provided between the frame and the throw-in door to lock or unlock the throw-in door in accordance with command issued from the control circuit. The locking and unlocking apparatus comprises an electromagnetic solenoid, a locking hole formed on the one side plate of the throw-in door and an actuating mechanism adapted to allow a locking bar to come in or out of the locking hole in response to signal transmitted from the control circuit. The actuating mechanism is operatively connected to the electromagnetic solenoid by way of a linkage system. A spring means adapted to allow the locking bar to normally come out of the locking hole is included in the actuating mechanism. When electric power supply is interrupted, the depository is handled by actuating his key in the conventional manner.

After hour depository

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Hiroshima, Japan

Eiro Naruto