Plumb bob assembly

Details Plumb bob assembly Plumb bob assembly

1994-06-22

1995-06-27

Fulton, Christopher W.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

33393, G01C 1510

Patent

active

054268605

ABSTRACT:
A plumb bob assembly including a bob, a collet for suspending the bob from a drill press chuck, and a housing within which the collet and bob may be stored and around which a plumb bob cord may be wrapped when the bob is not in use. The housing protects the tip of the bob from damage and diminishes the likelihood that the cord will become entangled during storage.

REFERENCES:
patent: 266671 (1882-10-01), Bergen
patent: 787896 (1905-04-01), Converse
patent: 1060855 (1913-05-01), Pipher
patent: 1538746 (1925-05-01), Reneau
patent: 1577133 (1926-03-01), Learnihan
patent: 2135211 (1938-11-01), Johnson
patent: 2791037 (1957-05-01), Damron
patent: 2803067 (1957-08-01), Kurschner
Photograph of plumb bobs from The 1994 American Woodworker Calendar, .COPYRGT.1993.

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