Plumb bob string holder

Details Plumb bob string holder Plumb bob string holder

1994-04-11

1995-12-12

Will, Thomas B.

Geometrical instruments

Indicator of direction of force traversing natural media

With cord-type straight-line guide or holder therefor

33392, G01C 1510

Patent

active

054738199

ABSTRACT:
A plumb bob string holder comprises a molded plastic unitary structure having first and second annular rings joined together by a bridge. Each of the first and second annular rings defines a circular aperture having a diameter sufficiently large whereby a plumb bob may by passed therethrough. The bridge is wide enough whereby a plumb bob string may be wound therearound for storage. The structure is constructed and arranged whereby a user may grip and hold the structure with his/her forefinger extended through one of the first and second annular rings, his/her middle finger wrapped around the bridge, and his/her fourth and fifth fingers extended through the other of annular ring, when a plumb bob string extends downward from the structure.

REFERENCES:
patent: 833699 (1906-10-01), Starrett
patent: 1178065 (1916-04-01), Craig
patent: 1275735 (1918-08-01), Phillips
patent: 1609777 (1926-12-01), Senez
patent: 1616234 (1927-02-01), Rooney
patent: 1784064 (1930-12-01), Griswold
patent: 2475745 (1949-07-01), Humlegard
patent: 2627124 (1953-02-01), La Rock
patent: 2683937 (1954-07-01), Criswell
patent: 4266347 (1981-05-01), Illgen
patent: 5157843 (1992-10-01), Barcewski

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