Abstract: A mounting rack is provided for supporting electrical equipment on a utility pole or other support. The mounting rack includes a mounting plate for attaching to the utility pole, a support member and at least one support bracket for coupling with the electrical equipment. The support member has at least one mounting arm coupled to the mounting plate to space the support member from the mounting plate. The mounting plate can have a mounting arm coupled to the support member. The mounting brackets are coupled to the mounting plate and to the support member by an intermediate bracket assembly. The intermediate bracket assembly has a pair of arms coupled to the mounting plate and the support member to space the respective mounting bracket from the mounting plate.

Abstract: A boom lift apparatus for use on a truck having a boom and a boom mounted bucket includes a mast selectively positionable on the boom at any of a plurality of different angles and supported on the boom for limited axial movement by a hydraulic cylinder which is fixed relative to one of the mast and the boom and movable relative to the other of the mast and boom, and a cooperating piston which is fixed relative to the other of the mast and the boom and movable relative to the one of the mast and the boom, the piston being received in the cylinder to define a variable volume in which pressure changes depending upon the position of the piston in the cylinder. A load measurement system is provided which includes a pressure measuring mechanism for measuring the pressure in the variable volume, the mechanism including a pressure gauge that includes a scale converted to indicate the load experienced by the mast as represented by the pressure in the variable volume.

Abstract: A simplified, impulse-type pulling and installing tool for appliances such as electrical connector elbows is provided which in use generates a sharp impact force to facilitate quick, safe elbow manipulation even under electrical load, thereby reducing the probability of flashover. In preferred forms, the tool includes an elongated rod having workpiece-engaging apparatus adjacent one end thereof, with tubular hammer means telescoped over the rod and reciprocably slidable along a portion of the length thereof. The hammer includes structure defining a pair of hammering surfaces respectively located adjacent the opposed ends of the hammer, and the rod is moreover provided with anvil means secured thereto and oriented for engagement by the hammering surfaces when the hammer is slid along the rod. A pair of such hammering surfaces are provided, which are cooperatively oriented relative to the hammering means, so that fore and aft impact forces can be developed along the length of the rod as desired.

Abstract: A two piece, open-ended, telescopically interfitted, synthetic resin insulative protective cover for one or more pin-type or post-type, conductor-supporting insulators is provided which has a configuration for substantially enveloping such insulators to thereby minimize the risk of inadvertent contact with the energized conductor, while also being easily installable using conventional hot-line tools by a lineman remote from the conductor and associated equipment. The cover preferably includes two separate sections which are individually installed and axially telescoped together over the insulator to give the complete cover. Each section has walls defining an elongated, insulator-receiving space and a longitudinal slot between the opposed bottom wall portions thereof.

Abstract: An improved electrical conductor cover is provided which essentially completely surrounds an energized conductor and is resistant to inadvertent, impact-induced dislocation of the cover during use. The cover includes an elongated, tubular, conductor-receiving section and a pair of ribbed, normally biased-together legs extending from the section. The legs normally are in abutting engagement, but can be separated for positioning the cover on a conductor; the ribs are spaced along the length of the legs and serve to cooperatively maintain the conductor within the tubular section even in the event of an accidental impact normally tending to spread the legs and thus expose the covered conductor. The cover also includes a molded-in-place, threaded head which projects only through the outer surface of the cover for allowing connection of a manipulative handle to the cover without the need for rivets or the like which extend completely through the insulative wall of the cover.

Abstract: A C-type electrical grounding clamp is provided for high voltage distribution lines wherein structure on the main body of the clamp presents at least a pair of separate, cooperable ground cable receiving elements oriented with the longitudinal axes of the cable passages in perpendicular relationship relative to one another. The user may thereby employ a plurality of the clamps all of identical construction for either phase-over-phase or phase-by-phase grounding in a manner wherein in each instance the grounding cables between adjacent conductors are all essentially parallel and of minimum length to span the distance therebetween for maximum resistance to fault current induced grounding cable whipping, and minimum imposition of non-fault stresses thereon. The clamps are especially adapted for supporting dual grounding cables between each pair of proximal conductors.

Abstract: A high current grounding assembly especially adapted for electrically interconnecting and grounding substation phase busses conductors is provided which includes rigid metallic connector elements capable of handling extremely high fault current loads without violent whipping or other motions. The clamp and connector assembly, or one of the phase busses, is connected to ground in order to protect linemen or other workers in the vicinity of the assembly from the effects of fault or inductive currents. In preferred forms, novel conductor-gripping clamps and rigid tubular connector elements may be partially or completely preassembled and thereafter installed on phase busses.