Cord clamp for drafting board assembly

Details Cord clamp for drafting board assembly Cord clamp for drafting board assembly

1978-04-21

1979-03-06

Haroian, Harry N.

Geometrical instruments

Scriber

Curved line

24255SL, 24129R, B43L 1302

Patent

active

041422945

ABSTRACT:
A cord clamp of integrally molded plastic construction particularly useful for adjustably securing a straightedge mounting cord to a drafting board. The clamp includes two mating, but not identical halves integrally hinged together like the halves of a clam shell. One of the halves of the clamp is adapted to be mounted on a drafting board or other support and may be considered as the mounting half. The other half is the one that swings open and closed and may be considered as the closing half. The mating surfaces of the two halves are interrupted by offset recesses which cooperate to define a labyrinth passageway capable of retaining a cord therein and clamping it between the two halves. A user may readily remove the cord from the clamp or adjust its position therein by manually opening the clamp without using tools and thus exposing the cord.

REFERENCES:
patent: 3818871 (1958-01-01), Beaudry
patent: 3824654 (1974-07-01), Takabayashi
patent: 3874042 (1975-04-01), Eddleman
patent: 3978555 (1976-09-01), Weisenthal

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