Abstract: Rotating filing cabinets consisting of multiple drawers with the drawers being attached to a chain and sprocket arrangement which is power activated with the drawers being able to rotate in a substantially vertical loop enabling the operator to activate the power drive and bring any one of the multiple drawers to a predetermined level, such as eye level.

Abstract: An apparatus is provided for moving a patient toward the head of a bed without touching or lifting him. An upper canvas upon which the patient rests is detachably secured to a take-up bar at the head of the bed. A lower canvas disposed between the upper canvas and the underlying mattress or cushion has its lower edge secured at the foot of the bed and its head edge pulled toward the head of the bed by a tensioning device. The lower canvas is thus held taut and longitudinal movement thereof is prevented. Since the length of the upper canvas is not limited by the length of the bed, the patient may be moved several times before the device is reset to the start position.

Abstract: A spring loaded cam lock for attaching together structural components has a pair of cooperating keeper arrangements each connected to a respective structural component and selectively held together by a torsion bar. By providing the torsion bar with a substantially elliptical cross section and the keeper arrangements with spring plates having substantially circular openings, the torsion bar can be restrained against sliding movement along its longitudinal extent and the openings provided in the spring plates brought into substantial alignment by rotation of the torsion bar about its longitudinal axes.