Bundle conductor stringing block with rotary threading gate

Implements or apparatus for applying pushing or pulling force – Method or apparatus for placement of conductive wire – Utility pole guide

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Details

254193, 254197, B66D 136

Patent

active

040184226

ABSTRACT:
A bundle conductor stringing block having provision for threading the same with a conductor hauling line as the line is dispensed from an aircraft. For this purpose one side frame of the block is provided with a rotary gate having a slot to receive and transfer the hauling line into the block throat and onto a central sheave. The spring-biased gate is held cocked open by a latch released by entry of the hauling line into the slot whereby the gate rotates to its line discharge position. The block includes guard members positioned in the plane of the throat until pivoted to a position clear of the throat by entry of the conductor running board. To minimize the bending moment on the sheave shaft, the axis of the threading gate is located inwardly of a vertical plane through the exterior face of the underlying outer sheave of the block.

REFERENCES:
patent: 2527651 (1950-10-01), Pieper
patent: 2806380 (1957-09-01), Martin
patent: 3077337 (1963-02-01), Cronkright
patent: 3195862 (1965-07-01), Sherman
patent: 3479014 (1969-11-01), Reilly et al.
patent: 3868089 (1975-02-01), Lindsey et al.
patent: 3905581 (1975-09-01), Chadwick

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