Changing color illuminated fountain

Claim 1

IN AN ILLUMINATED FOUNTAIN, THE COMBINATION OF: A FOUNTAIN BOWL HAVING A TRANSLUCENT BOTTOM; A BASE FOR SUPPORTING SAID BOWL IN AN ELEVATED POSITION; A VERTICAL BEARING MOUNTED CENTRALLY IN SAID BOTTOM; A SHAFT JOURNALLING IN SAID BEARING; A CENTRIFUGAL PUMP IMPELLER FIXED ON THE UPPER END OF SAID SHAFT; HOUSING MEANS INTO WHICH SAID IMPELLER EXTENDS FORMING A PUMP CHAMBER AND HAVING OPENINGS FOR DELIVERING WATER FROM SAID BOWL CENTRALLY TO SAID IMPELLER AND FOR RECEIVING WATER ECCENTRICALLY FROM SAID IMPELLER; A COLOR FILTER DISK DISPOSED ABOVE SAID BOWL BOTTOM AND ROTATABLY MOUNTED EXTERNALLY ON SAID BEARING, SAID DISK BEING SUBMERGED IN WATER CONTAINED IN SAID BOWL AND DIRECTLY EXPOSED TO WATER SET IN MOTION BY SAID IMPELLER, WHEN THE LATTER IS ROTATED, TO CAUSE SAID DISK TO SLOWLY ROTATE; AND A LAMP MOUNTED BENEATH SAID BOWL BOTTOM AND OPPOSITE A MARGINAL AREA ON SAID DISK SO AS TO EMIT RAYS OF LIGHT UPWARDLY THROUGH SAID DISK AS THE LATTER ROTATES, SAID MARGINAL AREA OF SAID DISK BEING PROVIDED WITH A SERIES OF DIFFERENT COLORS IN SUCCESSIVE SECTORS THEREOF.