Microtome having a handwheel for driving a specimen holder

Details Microtome having a handwheel for driving a specimen holder Microtome having a handwheel for driving a specimen holder

G - Physics

01

N

128/115

G01N 1/06 (2006.01)

Patent

CA 1229280

ABSTRACT OF THE DISCLOSURE: A microtome comprises a handwheel which can be ro- tated in two directions of rotation, and drive means for the purpose of driving a specimen holder, so that the specimen holder executes a cutting movement when the handhweel is rotated in one direction, and a resetting movement when the handwheel is rotated in the other di- rection. The cutting and resetting movements take place relative to a cutting knife. A reduction gearing arr- angement enables the speed of the cutting movement to be reduced relative to the speed of the resetting movement without having to rotate the handwheel at a correspond- ingly lower rate. A catch enables the reduction gearing arrangement to be bridged so that the speed of the cutt- ing movement and resetting movement are equal for any given rate of rotation of the handwheel.

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