Abstract: A clamping ring and static plate used for axially compressing the ends of a cylindrically shaped power transformer winding. The electrically conductive static plate portion of the combination device is formed around and is insulated from a foundation providing, high-strength material, clamping ring. In addition to saving material and space, the use of two or more of these devices concentrically positioned, permits the application of unequal clamping forces to concentrically positioned windings; at least one of these devices having reduced insulation requirements.

Abstract: A method and apparatus applicable with transformers having a magnetic circuit which is supported horizontally within a tank or shell made up of upper and lower parts, wherein a two-piece bar-like member assembly supported at its extremities on edges of the lower part of the tank, along with a conventional T-shaped beam support member is utilized to support the core laminations in such a manner that wedges used to fix in place the windings of the circuit can be readily adjusted beneath the area of the T-shaped beam. The bars are tensioned in place by adjustment of the wedges between the lower area of the windings and the tank sidewalls. The beam is then placed on the edges and anchored thereon.

Abstract: For hydraulically clamping transformer windings, hydraulic pressure generating boxes are arranged between the bottom wall of the transformer tank and a plate which supports the transformer yoke. The transformer coils which surround the legs are supported from the plate by clamping boxes which are connected by conduits to the pressure generating boxes to transmit hydraulic pressure therebetween.

Abstract: In an oil-filled apparatus, such as a transformer, having parts between which pressure is to be applied, such pressure is produced by providing between the parts bodies of an elastomer which absorbs the oil and expands as a result of such absorption. Such bodies may be used between windings and cores or as a seal between a transformer lid and a flange.