Thickness measuring instrument for moving sheets - with measuring roller applied gently to prevent damage to unhardened material

摘要

The measuring instrument has a reversible drive (29) with a shaft (28) which drives a crank (26) whose movements are limited by stops (30, 31 or 33, 35). The crank arm is connected by a link (24) to a lever (14) pivoted about the same axis as a two-armed lever (1) carrying the roller (7) to generate a force of application of the roller to the surface of the material under measurement, which is held constant by a spring (17). A projection (19) from the lever (14) grips a carrier (20) of one arm (5) of the two-armed lever (1) at one stop position of the drive to raise the roller from the material, and at the other end stop position the arm is released so that the roller rests on the material.