Adjustable cylinder lock

E - Fixed Constructions – 05 – B

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70/54

E05B 27/02 (2006.01) E05B 21/06 (2006.01)

Patent

CA 1126970

ABSTRACT A cylinder lock comprising a stationary cylinder housing and therein a turnable cylinder inclosing a plurality of tumbler discs turnable by means of the key of the lock. There is also a locking bar normally locking the cylinder non-turnably to the cylinder housing. When the tumbler discs have been brought to a releasing position, the locking bar can move closer to the center of the lock into a groove formed by alignment of peri- pheral recesses in the tumbler discs, and this releases the cylin- der from its locking. In the lock there is also at least one composite tumbler disc including two parts, a first part and a second part, which are angularly adjustably connected to each other. The first part can be turned with a key. Within an adjust- ment sector the first part has such a small radial extension that it leaves the locking bar free to move radially to its cylinder- releasing position. Within the same adjustment sector the second part of the composite tumbler disc has a support surface pre- venting the locking bar from moving radially to its cylinder- releasing position but has also a peripheral recess allowing the locking bar to reach its cylinder-releasing position. Between the first and second parts of the composite tumbler disc, there is an adjustable clutch device allowing setting of the first and second parts to a plurality of different, functionally fixed angular positions relative to each other. There is a specially designed setting key to be used for setting of the composite tumbler disc to another position, thereby changing the lock combi- nation.

324448

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