Apparatus and means for vertically aligning a hollow cylinder

Details Apparatus and means for vertically aligning a hollow cylinder Apparatus and means for vertically aligning a hollow cylinder

1986-09-18

1988-01-12

Martin, Jr., William D.

Geometrical instruments

Straight-line light ray type

Process

33 1H, 33286, 33309, 33348, 33391, G01B 1502

Patent

active

047181702

ABSTRACT:
A vertical alignment apparatus has a light and a light fixture attached to a cable to be lowered into the cylinder to be aligned. A disk mounted on top of the light fixture and centered about the light fixture and the cable causes the light emitted from the light fixture to form a halo between the disk and the wall of the cylinder. A tripod on top of the cylinder movingly centers the light, light fixture and disk in the cylinder. The method of the invention involves lowering the apparatus into the cylinder. The light fixture is activated to create a halo of light around the disk. The light fixture is then raised up the casing, and the casing is adjusted until the halo has circular consistency.

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