Patent ID: 8353232

Claim:
A brake controlling device and microtome ( 1 ) having the shaft ( 6 ), an actuating element ( 2 ), a movement mechanism ( 37 ) and a housing ( 38 ), wherein with the movement mechanism ( 37 ) an object to be cut can be moved relative to a knife blade, wherein the actuating element ( 2 ) can be manually actuated by an operator and, as a result thereof, the shaft ( 6 ) can be rotated, and wherein via the shaft ( 6 ) the movement mechanism ( 37 ) for performing the relative motion between the object and the knife blade can be driven, an actuator and a braking unit, wherein the braking unit is connected to the shaft ( 6 ) in a rotatably fixed manner and wherein with the actuator the braking unit can be automatically placed in a brake position in which the shaft ( 6 ) can be connected to the housing ( 38 , 7 ) in a rotatably fixed manner, an actuating unit ( 17 ) configured to determine whether the operator manually actuates the actuating element ( 2 ) and, disengage the braking unit ( 25 ) from the brake position, wherein the actuating unit ( 17 ) has a first coupling area which can be engaged with a second coupling area, in that the second coupling area is connected in a rotatably fixed manner to the actuating element ( 2 ), and in that the two coupling areas ( 27 ) are engaged with one another when the braking unit ( 25 ) is not engaged with the housing ( 11 ), wherein in that the actuating unit ( 17 ) is connected to the shaft in a rotatably fixed manner, in that the actuating unit ( 17 ) is mounted rotatably with respect to the actuating element ( 2 ) when the two coupling areas ( 27 ) are not engaged with one another when the braking unit ( 25 ) is engaged with the housing ( 11 ).