Cutting – With means to monitor and control operation
Patent
1991-04-10
1993-01-26
Phan, Hien H.
Cutting
With means to monitor and control operation
83414, 83703, 83915005, G01N 106, B26D 520
Patent
active
051814439
ABSTRACT:
A device for controlling the drive and forward feed of a microtome, particularly an ultramicrotome, includes a driving motor for moving a specimen or knife and a servomotor for generating a forward feed of the specimen towards an edge of the knife or vice versa. A high travelling speed of the specimen needed for rapid initial cutting is coupled to a high rate of forward feed. One single switching operation is performed, for instance, by a snap-engaging step switch via relay switches. The driving motor and the servomotor can be simultaneously switched over to pairs of values which correspond to subsequent rough cutting and ultra-thin cutting. Individual values for cutting speed and forward feed are separately preselected, readjusted, and read from a display. Selected program stages are indicated by signals.
REFERENCES:
patent: 3785234 (1974-01-01), Sitte
patent: 4377958 (1983-03-01), Leighton
patent: 4484503 (1984-11-01), Sitte et al.
patent: 4625608 (1986-12-01), Behme et al.
Hassig Helmut
Kunz Armin
Neumann Klaus
Sitte Hellmuth
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