System for adjusting positions of two sheets comprises nuts welded around bores in first sheet, bolts passing through these and bores in second sheet which are wider than lower ends of bolts

摘要

The system for adjusting the positions of two sheets (1, 2) comprises nuts (3) welded around bores (4) in the first sheet. Bolts (10) are passed through these and through bores (7) in the second sheet. The lower ends (20) of the bolts are thinner, so that they can be moved transversely in these bores. Nuts (8) are screwed on to the ends of the bolts, which carry hexagonal profiles allowing their adjustment.