Plumb bob and cooperating reel

Details Plumb bob and cooperating reel Plumb bob and cooperating reel

1993-05-03

1995-02-28

Will, Thomas B.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

33392, 33339, G01C 1510

Patent

active

053925220

ABSTRACT:
A plumb bob having a central body portion and at least three substantially identical webs extending outwardly from the body portion along respective radial axes. The angles separating each successive web must be equal to maintain vertical symmetry, and an even distribution of weight, with respect to a longitudinal axis extending centrally through the body portion. In addition, the webs uniformly and linearly taper in a decreasing manner from the top end to the bottom end of the body portion. This geometry permits a worker standing in vertically aligned position above the plumb bob to be able to clearly see both the bottom end of the plumb bob and the preexisting datum from which alignments are being made.

REFERENCES:
patent: 1586654 (1926-06-01), Conway
patent: 2184505 (1939-12-01), Danley
patent: 2594823 (1952-04-01), Suverkrup
patent: 3011263 (1961-12-01), Unger
patent: 3405450 (1968-10-01), Peacock

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