Geometrical instruments – Miscellaneous – Light direction
Patent
1987-03-23
1989-04-04
Haroian, Harry N.
Geometrical instruments
Miscellaneous
Light direction
33563, 33663, G01B 310
Patent
active
048172928
ABSTRACT:
Disclosed herein is a chart and a preferred method of using it.
The chart consists of predetermined measurements printed, preferrably on a durable paper.
The chart is designed to give double fullness to drapes. This is accomplished by the pleated and the unpleated areas being the same width.
Vertical numbers 1-27 get progessively larger. They determine, by moving horizontally down the chart, the location of each pleat and unpleated area.
Horizontal lines start out progressively larger and they then continue to be drawn the same width down the remainder of the chart, approximately 13 feet 6 inches.
These lines determine how wide the pleated and unpleated areas are to be.
REFERENCES:
patent: 2547745 (1951-04-01), Cade et al.
patent: 2777617 (1957-01-01), Matt
patent: 3528077 (1970-09-01), Seiden
patent: 3645000 (1972-02-01), Gass
patent: 3645003 (1972-02-01), Gass
patent: 3664026 (1972-05-01), Lawson
patent: 3696515 (1972-10-01), Tuskos
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