Abstract: An improved switch-jaw construction is provided for a disconnecting switch having a tie-rod assembly interconnecting the free ends of the confronting switch jaw contacts. The tie-rod assembly includes preferably a metallic tubular member having its outer interior surfaces threaded to accommodate mounting bolts and the tie-rod assembly passes through apertures provided adjacent the free ends of the inwardly-turned switch-jaw contacts. Preferably mounting bolts are threaded into the interior threads of the tubular tie-rod within insulating bushings to prevent current flow into the tie-rod assembly, which would otherwise heat the compression springs and thereby cause them to loose their temper.

Abstract: An improved simple adjustment device is provided for each of several disconnecting switch structures enabling an independent positioning of the blade-assemblies in the open and closed positions, by an adjustment of a tongue-member, which is incorporated in the operating arm assembly by adjustment bolts. Inward and outward movement of the tongue-member in the operating crank-assembly will effect only the closed position of the switch-blade assembly. Once this is made, right and left adjustment of the same tongue-member will correspondingly effect only the open position of the blade-assemblies. The aforesaid tongue-member is pivotally connected to the link-member interconnecting the blade-assembly, and it is provided with one or more elongated adjustment slots to permit the aforesaid adjustment movement in or out, and to the right or left for independent adjustment of both the open and closed circuit positions of the several blade-assemblies.

Abstract: An improved bearing and journal construction is provided for a high-voltage disconnecting switch of the type having supporting insulators and a rotatable crank-arm arrangement, with the operating thrust of the crank-arm being supported by simplified bearing discs running in a journal, the improvement residing in the fact that the hinge member about which the switch-blade pivots is separate from the journal member which bridges the hinge supporting insulator to the rotating insulator, and that the foregoing separation allows the journal member to be stamped out of plate material resulting in considerable economy over the cast construction known to prior art. A preferred bearing arrangement locates the discs under the crank-arm so that traditional machining of a bearing race on the crank-arm is eliminated for further economy.

Abstract: An improved disconnecting switch is provided having an improved hinging structure which provides the traditional movements of a vertical break disconnect switch-blade in a simple and unique way. The switch-blade rotates about its longitudinal axis on a blade plug which is supported by a hinge pin that passes at a right angle through slots provided in the blade and a hole in the blade plug. The slots define the amount of rotation and prevent the switch-blade from sliding along the longitudinal axis. The structure also allows the switch-blade to pivot open on the axis of the hinge pin. The switch-blade contact on the hinge end of the switch may be used as the supporting member for the hinge pin.

Abstract: An improved shaft-clamping device is provided utilizing a loop-bolt which wraps spirally around the shaft, or pipe to be clamped to another member, and such member is provided with a pair of spaced mounting apertures, through which the legs of the loop-bolt project, and have fastening means secured thereto, such as nuts, for example.Preferably, to increase the friction between the loop-bolt, or shaft-clamping device to the shaft, or pipe, the loop-bolt is threaded. This not only increases the frictional relationship between the shaft, or pipe and the other member, to which the shaft, or pipe is to be clamped, but, additionally, the threaded condition of the legs of the loop-bolt allow the clamping nuts to be threadedly secured thereto without further manufacturing operations. Heat treatment of the threaded loop-bolt brings the best result since the biting action is increased and the loop-bolt can be reused without flattening the threads.