In an overhead electric traction system a simple and inexpensive mid-point anchor comprises a mast and, mounted on the upper part of the mast, a cantilever structure comprising a pair of rigid elongate members which lie in a common plane and extended transversely with respect to and lie spaced apart in a direction lengthwise of the track, and which at their ends nearer the track are connected to the mast by a third transversely extending elongate member inclined at an acute angle to the common plane. The ends of the members remote from the track are connected to opposite ends of a rigid bar which extends lengthwise of the track, which is pivotally connected to the mast about a vertical axis and which, at each of its end portions, is connected to the mast by a flexible tie. In the event of an unbalanced load on the catenary, pivotal movement of the cantilever structure about the vertical axis is prevented by one of the flexible ties and the out of balance load is transferred to the mast as a torsional load.
A device for suspending a contact cable for vehicles running on rails which includes an upper tension rod connected to a support mast, a compression rod connected to the support mast to hold up a free end of the tension rod. A lower horizontal rod is jointly linked to the compression rod and supports and jointed direction rod adapted to contact the contact cable. An inner axially movable rod is telescopically inserted in the tension rod with a clamped sleeve surrounding the tension rod. The inner axially movable rod is adapted to be locked in an axial position by a clamping force applied by the clamping sleeve.
A combination of apparatus for laterally offsetting power lines from a utility pole, and maintaining the utility pole in an essentially vertical orientation and statically balanced condition. A truss assembly is pivotally mounted to a utility pole adjacent the top thereof. The truss includes a tubular member which extends in laterally spaced, parallel relation to a utility pole, and which receives therethrough an elongated rod adapted to securely receive and support several types of power lines. The elongated rod includes several insulated candlesticks, or wire receiving members, on its top end, and includes several, longitudinally spaced holes formed transversely therethrough, each one of which operably receives an insulated, wire receiving bolt. To counter-act the unbalanced load placed on the utility pole by the laterally offset power lines, a guy wire is attached at its ends to the upper and lower ends of the utility pole. The guy wire passes around a pulley assembly which is adjustably interconnected to the utility pole. By adjusting the lateral distance separating the pulley assembly from the utility pole, the tension in the guy wire is correspondingly adjusted. Accordingly, by adjusting the tension in the guy wire to counter-act the unbalanced load put on the utility pole by the offset power lines, the utility pole will be maintained in an essentially vertical orientation and in a statically balanced condition.
There are disclosed a method for assembling LP insulators in which no box housing is used, assembling operation is facilitated and various product lengths can be handled, and an LP insulator assembly which is lightweight because of a small amount of packing materials for use, which produces only a small amount of waste materials after unpacking and whose insulators are easily lifted. An LP insulator assembly 1 includes an LP insulator 2 mainly constituted of a shaft body 3, an engaging member 4 and a support fitting 5; a pallet 9 in which flat plates are arranged on spacer members 7 to form a deck surface and on which the LP insulator 2 is vertically placed; a fixing member 10 for fixing the support fitting 5 to the pallet; and a tying member 12 for tying the engaging members 4 to one another. The deck surface of the pallet and the support fitting 5 are fixed by the fixing member 10, a plurality of LP insulators 2 are vertically placed, and the engaging members 4 of the LP insulators 2 are tied to one another.
An overhead traction wire support which including a first plate and a second plate, the first plate having on at least one side at least one leg which can be fastened to a ceiling or a wall of a structure. A second plate, which is made of an electrically conducting material, is held at a distance from the first plate via at least one insulator. A current conductor, along which a current collector can slide, is fastened in an electrically conducting fashion to the second plate on the side which faces away from the first plate, and at least one current amplification line is arranged on the second plate parallel to the current conductor.
A support assembly for supporting a high voltage electrical conductor suspended from a lattice-type tower during maintenance and repair includes a pair of elongate support arms, each of the support arms having an aperture extending therethrough intermediate its ends, the aperture opening in a direction transverse to the length of the support arms, and an elongate conductor support bar slidably received in the apertures of the support arms and extending between the support arms to define with the support arms a generally H-shaped support assembly, the support arms being slidable on the support bar for adjusting the distance between the arms and being movable on the support bar between a first position wherein the arms are parallel to each other and a second position wherein the arms are arranged at an angle to each other.
