Cutting – Processes – Plural cutting steps
Patent
1978-04-21
1979-04-24
Meister, J. M.
Cutting
Processes
Plural cutting steps
83412, 83718, 839155, G01N 106
Patent
active
041505930
ABSTRACT:
An apparatus for selective attachment to a rotary microtome in order to permit separation of the specimen from a cutting knife during the return stroke of the specimen. A small frame is adapted to fit within the conventional specimen holder or chuck of the microtome; and the frame carries a solenoid with a movable core. Attached to the forward end of the movable core is an auxiliary specimen holder; attached to the other end of the core is a plate against which a compression spring constantly presses. The preferred power supply for the solenoid is a filtered 30 volt DC power supply. The solenoid is energized only during the downward, cutting stroke of the microtome, and it is de-energized before the arm starts its return stroke. The spring urges the specimen holder away from the knife when the solenoid is de-energized. The apparatus may be readily installed on any conventional rotary microtome with minimal skilled labor; and it may be removed at will to restore the microtome to its original condition.
REFERENCES:
patent: 3077806 (1963-02-01), Hellstrom
patent: 3691889 (1972-09-01), Forsstrom
patent: 3733948 (1973-05-01), Pickett
patent: 3771405 (1973-11-01), Blum
patent: 4126069 (1978-11-01), Shimonaka
McHugh Charles W.
Meister J. M.
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