Device for measuring guide alignment for mine shafts and the lik

Details Device for measuring guide alignment for mine shafts and the lik Device for measuring guide alignment for mine shafts and the lik

1984-03-26

1985-08-20

Ward, Robert S.

Geometrical instruments

Miscellaneous

Light direction

33125R, 33333, 33340, 33366, G01C 900, E21B 4702

Patent

active

045355410

ABSTRACT:
A guide alignment measuring device for mine skips, cages, elevators and other conveyance systems. The device measures misalignment of one or more guides used in vertical shafts or incline shafts in various types of mining operations, elevator shafts and similar operations where materials and personnel are raised and lowered.

REFERENCES:
patent: 449920 (1891-04-01), Thorn
patent: 3077670 (1963-02-01), Waters
patent: 3130495 (1964-04-01), Schulte
patent: 3238631 (1966-03-01), Graf
patent: 4214374 (1980-07-01), Miotti
patent: 4357660 (1982-11-01), Hepp

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