Line string block attachment

Details Line string block attachment Line string block attachment

1981-12-15

1983-12-13

Schmidt, Frederick R.

Implements or apparatus for applying pushing or pulling force

Method or apparatus for placement of conductive wire

Utility pole guide

H02G 102

Patent

active

044201435

ABSTRACT:
An attachment for single strand and multi-strand stringing blocks used during the stringing of high tension electrical wires between electrical suspension towers. Since electrical towers are not all disposed in a linear array an angled pull has a tendency to cause a lead cable to jump out of a groove in a pulley sheave on the stringing block. When in a first position roller guides on a stringing block attachment engage the lead cable and prevent it from sliding out of the groove in the pulley sheave. In a second position the rollers are retracted so they will not engage the conductor wire which follows immediately behind the lead cable. Support arms for the rollers are rotatably attached to the framework of the attachment which is mounted on the carriage of the stringing block.

REFERENCES:
patent: 2879031 (1959-03-01), Livingston
patent: 2946559 (1960-07-01), Pickett
patent: 3077337 (1963-02-01), Cronkright
patent: 3145973 (1964-08-01), MacFarlane
patent: 3584837 (1971-06-01), Reilly et al.
patent: 3640504 (1972-02-01), Lindsey
patent: 3720399 (1973-03-01), Bozeman
patent: 4018422 (1977-04-01), Bozeman
patent: 4039141 (1977-08-01), Lindsey

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