Span trolley

Details Span trolley Span trolley

1976-05-06

1977-03-29

Smith, Al Lawrence

Implements or apparatus for applying pushing or pulling force

Method or apparatus for placement of conductive wire

Tractor for pulling wire

H02G 102

Patent

active

040145166

ABSTRACT:
A span trolley detachably connectable to a line suspended between first and second poles to draw an end of a cord from the first pole to the second pole. Two guide wheels and a drive wheel, secured to a chassis, are resiliently urged into engagement with the line extending between the poles. The chassis is moved along the line by a reversible variable speed electric motor to draw a cord having an end connected to the chassis along the line. The resiliently mounted guide wheels are adapted to move transversely relative to the line such that the span trolley passes splices and other obstructions along the line and maintains the drive wheel in driving engagement with the surface of the line while obstructions are being traversed.

REFERENCES:
patent: 628994 (1899-07-01), Schottle et al.
patent: 1569521 (1926-01-01), Milton
patent: 2604521 (1952-07-01), Boucher

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