Implements or apparatus for applying pushing or pulling force – Method or apparatus for placement of conductive wire – Conduit snakes
Patent
1976-11-03
1978-03-07
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Method or apparatus for placement of conductive wire
Conduit snakes
B66D 136
Patent
active
040776093
ABSTRACT:
A threading device for threading a line through an upright hollow pole comprises a guiding and supporting means for the line and a substantially rigid shaft on an end of which the guiding and supporting means is mounted, the other end of the shaft being hinged to means capable of securing the shaft to a threading rod. The guiding and supporting means can comprise a block provided with passageways and having a body part and a bollard housed in a recess within the block and surrounded by passageways. When threading a pole the device is passed upwardly through the pole by means of threading rods with a weighted line held by the supporting and guiding means and, upon passing out of the pole, the shaft pivots relative to the threading rods so that the weighted end of the line hangs outside the pole. The rods can then be rotated to locate the end of the line in the desired orientation relative to the pole, and the weight then lowered.
REFERENCES:
patent: 2670178 (1954-02-01), De Wolf
patent: 2727721 (1955-12-01), Pinkerton
patent: 3497899 (1970-03-01), Caperton
The Post Office
Watson Robert C.
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