System for measuring flatness of rolled aluminum container sheet

Details System for measuring flatness of rolled aluminum container sheet System for measuring flatness of rolled aluminum container sheet

1985-01-14

1986-03-11

Stearns, Richard R.

Geometrical instruments

Gauge

Comparator

33168R, G01B 346, G01B 500

Patent

active

045744939

ABSTRACT:
A system is provided for rapidly determining the flatness of a rolled sheet of aluminum which comprises placing a ruled lightweight flat bar across the sheet with portions of the bar in contact with adjacent high points on said sheet and measuring the distance between the high points. The height is then measured by inserting, between the bar and the lowest point on the sheet between the high points, a gauge having continuous measuring means comprising a conically shaped device tapering to a point. The gauge is inserted until both surfaces are in contact with the conical device. The thickness of the conical gauge is then measured at the point of contact to determine the distance between the surfaces.

REFERENCES:
patent: 146974 (1874-02-01), Allen
patent: 703208 (1902-06-01), Lawrence
patent: 2817153 (1957-12-01), Jakubiak
patent: 3513556 (1970-05-01), Holland
patent: 3740779 (1973-06-01), Rubricuis

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