| 摘要 |
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.
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