Abstract: An exercise table having a flat semi-rigid support with a rigid cushion support alignment means at one end which acts to align the spine of a person lying on the exercise table and a pair of spaced apart alignment tubes extending longitudinally from the same end of the flat semi-rigid support for providing alignment of the head with the portion of the spine craddled within the rigid cushion support alignment means. As the person performs rocking exercises on the exercise table and continually slides his head and body further along the rigid cushion support alignment means and pair of alignment tubes, a support means is disposed to rotatably support the flat semi-rigid support on the floor.

Abstract: A joining device for quickly and easily connecting together furniture, shelving, display items and other like articles which includes a dowel piece having both ends turned down and threaded at opposite ends in opposite directions, and includes in combination therewith internally threaded keepers for holding in position desired standards with preformed apertures therein when the latter are each fitted onto opposite ends of the dowel through the predrilled openings, the keepers being tightened first onto the threaded portion of one side of the dowel after inserting in the first of the pair of standards and then the remaining keepers are tightened on the opposite end of the dowel when it has been inserted through the preformed apertures in the second of the pair of standards. The application also includes the method for use of the same.

Abstract: A teaching device useful for reinforcing learning and presenting new information to an operator which is adapted for use with cards having related information on both sides of each card such as a question on one face and the answer on the reverse face, and includes an enclosed frame with an inlet opening for receiving the card obverse face up and an outlet opening for delivering the same card reverse face up with a stationary guide means for selectively moving the card from the inlet opening to the outlet opening while reversing the face of the card shown to the operator. A modification of the preferred embodiment described above includes by way of example a receptacle disposed at the outlet opening for receiving the exiting card from the outlet opening and stacking the cards on a deck of other like cards; this receptacle can include a movable cover to prevent reading of the reverse side of the exited card until the operator is ready.

Abstract: A molding apparatus to provide composite plastic articles within the mold is provided. The apparatus includes upper and lower sections which when in a closed position, form a mold cavity divided into two separated chambers by partitions in the upper section. Elements of a desired configuration are formed in the chambers by injecting molten plastic therein and cooling. After formation of the elements, the upper section of the mold is removed and with it, the partitions separating the cavity into chambers. The elements, which are now at opposite ends of an unblocked cavity, are then driven into engagement with each other by a driving means while still in the mold. The joined elements are then ejected from the mold as a composite article. In the preferred embodiment, the elements are interlocked "E" shaped devices which form a solid cube when joined.