Lock casing to be installed in a door or the like

A lock casing to be installed in a door or the like, comprising:

• a front plate with a longitudinal dimension,
• a case-like lock housing attached to the front plate, the lock housing including a bolt,
• a follower unit which includes a follower element which is turnable in the follower unit about an operating axis,
• a fastening means for securing the follower unit to the front plate at a position such that the operating axis is perpendicular to a line which is parallel to the longitudinal dimension of the front plate and the follower element is accessible from at least one side of the door for turning by means of a key operated locking mechanism, the fastening means including at least one spacer element positionable between the front plate and the follower unit, whereby the follower unit is held at a distance from the front plate, the or each spacer element being detachable from both the front plate and the follower unit and being removable from between the front plate and the follower unit, whereby the or each spacer element can be removed and replaced with another spacer element of different thickness and the distance of the follower unit from the front plate can be adjusted, and
• a force transmitting means operable, on movement of the follower element when the follower unit is secured to the lock housing, to control operation of the bolt,
• and wherein the spacer element does not extend between the front plate and the lock housing, whereby position of the lock housing relative to the front plate is not affected by the spacer element.

An article of manufacture including:

• a door having an edge,
• a key operated lock mechanism attached to the door and defining an operating axis at a predetermined distance from the edge of the door, and
• a lock casing to be installed in the door, the lock casing comprising:
• a case-like lock housing including a bolt,
• a front plate to which the lock housing is attached, for attaching the lock housing to the edge of the door,
• a follower unit which is releasably fastened to the front plate and includes a follower element which is turnable in the follower unit about a follower axis, the follower element being accessible from at least one side of the door for turning by means of the key operated lock mechanism,
• at least one spacer element between the front plate and the follower unit, whereby the follower unit is held at a distance from the front plate, the or each spacer element being detachable from both the front plate and the follower unit and being removable from between the front plate and the follower unit, whereby the or each spacer element can be removed and replaced with another spacer element of different thickness and the distance of the follower unit from the front plate can be adjusted, and
• a force transmitting means operable, on movement of the follower element, to control operation of the bolt,
• and wherein the thickness of the or each spacer element is such that when the lock casing is installed in the door with the front;
• plate attaching the lock housing to the edge of the door, the follower axis is at said predetermined distance from the edge of the door,
• and wherein the spacer element does not extend between the front plate and the lock housing, whereby position of the lock housing relative to the front plate is not affected by the spacer element.