Centrifugal apparatus for slide staining

Claim 1

A SLIDE STAINING APPARATUS COMPRISING A DISC ARRANGED FOR ROTATION ON A VERTICAL AXIS, SAID DISC HAVING FLUID GUIDE MEANS ASSOCIATED THEREWITH TO CONDUCT FLUID APPLIED TO THE UPPER SURFACE OF SAID DISC TO PREDETERMINED POINTS ON THE PERIPHERAL EDGE THEREOF BY CENTRIFUGAL FORCE WHEN SAID DISC IS ROTATING AND TO PERMIT THE DISCHARGE OF SAID FLUID AT SAID POINTS, A PLURALITY OF SLIDE HOLDERS EACH ADAPTED TO RECEIVE A SLIDE THEREIN WITH A SURFACE OF THE SLIDE GENERALLY PARALLEL WITH AND FACING SAID AXIS, SAID HOLDERS BEING COUPLED FOR ROTATION WITH SAID DISC, SAID HOLDERS BEING SPACED ABOUT SAID PERIPHERAL EDGE AT POINTS THAT CORRESPOND TO SAID DISCHARGE POINTS, MEANS FOR ROTATING THE DISC WHEREBY THE FLUID IS TRANSMITTED FROM SAID GUIDE MEANS TO SAID HOLDERS TO ENGAGE SAID SLIDE SURFACES DURING ROTATION, AND MEANS FOR PERMITTING THE DRAINAGE OF SAID FLUID FROM SAID SLIDE SURFACES WHILE THE DISC IS ROTATING.