Abstract: An anchor for embedment into a concrete component, has a head via which load is applied to the anchor in use and an anchoring formation provided by at least one leg extending from the head and profiled along an edge thereof so as to lock into the surrounding concrete. The profile is formed by a series of longitudinally spaced formations each of generally saw-toothed shape with a leading edge of each formation inclining towards the head such that on application of a pulling load to the head the leg will lock tighter into the concrete with increasing load.

Abstract: Pool balls falling into the pockets of a pool table during a game are fed through primary conduits below the table and then passed one at a time through the field of view of a camera which identifies the color and/or markings on the ball and forwards each ball through an appropriate secondary conduit to a rack located in a receiving position adjacent one end of the table. The rack is mounted on a carriage pivotally secured to the table at one end thereof so that, when the rack is full, the carriage can be pivoted from the receiving position to a discharge position over the table so that the balls can then be discharged from the rack in the correct formation on the table. Releasable retainers are provided to retain the balls in the rack during the pivoting movement and until the rack is in position over the table.