Abstract: A lock mechanism is disclosed for a sheet store adapted for the dispensing or accepting of sheets. The sheet store comprises a container having a lid operable for access to the interior of the container and a shutter operable for the passage of sheets therethrough. The lock mechanism comprises: a locking plate movable relative to the container, the locking plate being operable to control a lid lock element and a shutter lock element; and an actuator arranged to control movement of the locking plate. The locking plate is movable between three positions, including: a closed position, in which the shutter lock element prevents opening of the shutter; a primed position, in which the shutter can be opened; and an open position which controls the lid lock element to permit opening of the lid.

Abstract: A cufflink is provided in two parts, namely a decorative head member and a link member with a shank and a flange with a shirt cuff button hiding recess. The decorative head has an opening formed in its rear plate, which opening is normally partially obstructed at two diametrically opposed sites by respective limbs of a spring. The tip end of the shank is grooved to be caught between the spring limbs. For assembling the cufflink through a shirt cuff, the tip of the shank is inserted in the opening in the rear plate of the decorative head and the two members are pressed together until the spring limbs catch in the shank grooves. For release, a lever on the side of the head is pressed transversally of the head, forcing the spring limbs temporarily apart and thus freeing the shank tip for withdrawal from the head rear plate opening.