Hot line clamps

Details Hot line clamps Hot line clamps

1977-02-28

1978-06-27

Lake, Roy

Geometrical instruments

85 62, 339264R, H01R 1300

Patent

active

040971082

ABSTRACT:
A hot line clamp for temporarily or permanently connecting a branch conductor to a main conductor. The clamp includes a rigid generally U-shaped body with a cylindrical boss for receiving the branch conductor. The branch line is secured in place on the ground by the lineman. The clamp also includes a flap member which is rockably mounted about one leg of the U-shaped body between an open position for enabling the clamp to be received on the main conductor and a closed position for maintaining the clamp in place on the main conductor. A torsion spring is disposed around the pivot for the flap member and biases the latter toward the open position. The edges of flanges on flap member cooperate with the main conductor when the clamp is received thereon for rocking the flap member to the closed position. An eye bolt is threadedly received in one of the legs of the body for tightening and loosening the hold of the clamp on the main conductor, the head of the bolt being adapted to receive the hook of an insulated pole. The weight of the pole itself is enough to rock the flap member into its closed position where holes therein engage dogs on the body. A pin having a predetermined shear strength is connected between the bolt per se and its head. Accordingly, when the tightening torque exerted by the lineman on the bolt exceeds a limit corresponding to the shear strength of the pin, the latter is sheared. The clamp with its pin sheared in this manner may be left as is indefinitely. A second pin is provided having a slightly greater shear strength than the first for loosening the bolt should the first pin be accidentally sheared.

REFERENCES:
patent: 2120447 (1938-06-01), Tipsord
patent: 3177459 (1965-04-01), Toedtman
patent: 3624592 (1971-11-01), Walter

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