Abstract: A grounding device for positively grounding a broken electrical conductor has a primary body having a mounting post extending therefrom. A bracket is fixed to the pole carrying the conductor, and a clamp connects the mounting post to the bracket. To raise the grounding device, an extension bracket is fixed to the bracket, and the grounding device is clamped to the extension bracket. A secondary body is rotatable with respect to the primary body. A spring-urged tongue carried by the primary body is held in place by hooks on the secondary body; so, when the secondary body is rotated, the hooks are moved, and the tongue is projected from the housing.

Abstract: A group operated electric circuit disconnect apparatus for a plurality of overhead electric power distribution lines carried on poles. The apparatus includes an elongated extruded base mounted on and extending transversely of a pole. A bracket is connected to an electric circuit component. The elongated base has at least one elongated slot with a reduced dimensioned entry. The bracket is positioned and secured at any position along the base by fasteners having enlarged head portions mating within the slot.

Abstract: A disconnecting switch arrangement for a high voltage disconnecting switch equipped with an earthing device for use particularly in a metal clad insulated substation. The arrangement comprising a disconnecting unit, an earthing unit and an actuating unit for actuating the disconnecting unit and the earthing unit. The disconnecting unit comprises a stationary contact member, a common stationary contact member at a standard spacing from the stationary contact member and a common movable contact member for disconnecting from and connecting with the stationary contact member and the common stationary contact member and is moved in a circular motion by the actuating unit. The earthing unit is comprised by an earthing contact member, the common stationary contact member and the common movable contact member each of which is commonly used with the disconnecting unit.

Abstract: A protective boot of flexible, insulating material for use in covering the grounded portions of a circuit interrupter and thereby preventing accidental shorting between the current carrying sections of the circuit interrupter and the grounded portions. The standard, pole-mounted circuit interrupter consists of a number of movable switches used in high voltage applications where shorting can be extremely damaging to the unit. The protective boot of the invention is fabricated in a number of separate parts which correspond to the individual grounded elements of the interrupter. Thus, when in place, the boot will substantially encase the entire grounded portion providing the requisite insulation. At the same time, due to the number of separate parts of the boot, installation on pole-mounted interrupters is easily accomplished, and at the same time, the moving parts of the switches remain unobstructed.

Abstract: A double break air disconnecting switch for high voltage electric power installations having a switchblade fixed to a rotatable center insulator for unitary movement therewith and fixed jaw contacts mounted at the ends of the switchblade. A pivoting contact bar which is engaged by one of the jaw contacts is supported from each outside insulator stack. Each contact bar is pivotally supported from the associated insulator stack for movement between a closed position in high pressure engagement with the jaw contact and an open position not in high pressure engagement with the associated jaw contact. During closing as the contact bar pivots from the open position to the closed position, the contact bar pivots around its longitudinal axis with respect to the jaw contact from the low pressure engagement position to the high pressure engagement position.

Abstract: A high voltage switch including a rotatable insulating column adjusted by means of an operating arm assembly including two bolt circles of equal radius and unequal spacing.