Patent ID: 7966917
Filing Date: 2011-06-28
Classification: G01N,Y10T

Abstract:
1. In a microtome having a knife and a specimen holder movable relative to the knife, the improvement comprising: a first lever rotatable about a first axis by an operator; and a second lever rotatable about a second axis in a target direction, the second axis being substantially parallel to the first axis; wherein one of the first and second levers includes two guidance surfaces, and the other of the first and second levers includes a guidance segment, the guidance segment coacting with the two guidance surfaces such that rotation of the first lever in a first direction rotates the second lever in the target direction, and rotation of the first lever in a second direction opposite to the first direction also rotates the second lever in the target direction; and wherein at least part of the guidance segment always engages at least one of the two guidance surfaces; wherein the guidance segment includes two rollers each rotatable about a respective roller axis for engagement with a respective one of the two guidance surfaces.