Dual chalk line marker

Details Dual chalk line marker Dual chalk line marker

1991-03-18

1991-11-12

Haroian, Harry N.

Geometrical instruments

Straightedge type

Cord type

B44D 338

Patent

active

050636812

ABSTRACT:
A chalk line assembly and a pair of spreader allow two spaced apart chalk lines to be marked simultaneously. A chalk line assembly includes a chalk line, a spool, a box, and a crank. The chalk line has two ends wound on the spool and a middle portion forming a bight having a first side, a second side and an outer end. The box confines the spool and provides a bearing therefore, confines a body of powdered chalk and includes an aperture for passage of the chalk line from the box. The crank is connected to the spool for rotating the spool to wind up the chalk line. A pair of spreaders include a first spreader for receiving the line middle portion from the spool and includes a pair of spaced apart ports through which the line middle portion passes. The second spreader is slidably connected to the bight outer end and includes a spaced apart pair of ports through which the chalk line passes.

REFERENCES:
patent: 665119 (1901-01-01), Latter
patent: 986171 (1911-03-01), Hoover
patent: 1004443 (1911-09-01), Laut
patent: 3078581 (1963-02-01), Foster
patent: 3126637 (1964-03-01), Short
patent: 3206855 (1965-09-01), Fletcher
patent: 4565011 (1986-01-01), Karger

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