Geometrical instruments – Straight-line light ray type – Multisight line
Patent
1994-09-21
1996-02-06
Will, Thomas B.
Geometrical instruments
Straight-line light ray type
Multisight line
33285, 33370, 33375, G01C 100
Patent
active
054887771
ABSTRACT:
A small, portable, lightweight device enabling one person to quickly and accurately measure the angle of a utility line at a given pole consists of a protractor rotatable about a central axis divided into quadrants with a rotatable pointer mounted on the face having front and rear sights for visual alignment mounted upon a frame to which two perpendicularly oriented levels both disposed in a plane parallel to that of the protractor are also mounted. The frame has a vertical component from which a pair of positioning pins and a vertically offset plumb adjustment extend forward and are biased against a pole. The axis of one level is disposed parallel to the axis through the contact points of the two positioning pins with the pole and facilitates horizontal positioning of the pins against the pole which is maintained with manual biasing of the device against the pole. The other level guides the setting of the plumb adjustment which effects a second horizontal axis perpendicular the first and thus allows determination of a horizontal disposition of the protractor face. A baseline through the two zero markings on the protractor face is then visually aligned with one adjacent pole. The pointer is then visually aligned with the other adjacent pole and the angle subtended is read from the position of the pointer on the protractor face. Front and rear sights on the pointer and two sights upon the baseline facilitate visual alignment of both poles. The value of the angle subtended is used to calculate the lateral force upon the pole exerted by the line carried by the poles for economic sizing of the guying cable and tackle necessary to maintain the erect disposition of the poles which is necessary to maintain line operation.
REFERENCES:
patent: 596279 (1897-12-01), Potter
patent: 974007 (1910-10-01), Wolcott
patent: 1050393 (1913-01-01), Raymond
patent: 2008113 (1935-07-01), Sherritt
patent: 2679105 (1954-05-01), Herrick
patent: 2697234 (1954-12-01), Sturdevant
patent: 3382754 (1965-05-01), Lunden
patent: 3858326 (1975-01-01), Hurd
patent: 4245393 (1981-01-01), Zane et al.
Gibson Peter
Will Thomas B.
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