Self-rimming sink mounting

Claim 1

A SINK AND DRAINBOARD ASSEMBLY COMPRISING A SINK HAVING INTEGRAL BOWL MEANS, THE DRAINBOARD BEING PROVIDED WITH AN OPENING CONFORMING TO AND SLIGHTLY LARGER THAN THE BODY OF THE BOWL MEANS TO RECEIVE THE BOWL MEANS POSITIONED WITHIN SAID OPENING, SAID BOWL MEANS BEING FORMED WITH AN INTEGRAL CONTINUOUS MARGINAL FLANGE PROJECTING OUTWARDLY FROM ITS UPPER EDGE AND OVERLYING THE MARGINAL EDGE SURFACE DEFINING THE DRAINBOARD OPENING, DRAIN ASSEMBLY MEANS AT THE BOTTOM OF THE SINK BOWL MEANS, A HOLD-DOWN PLATE ATTACHED TO THE DRAIN ASSEMBLY MEANS, A BRACE FRAME SURROUNDING SAID SINK BOWL MEANS AND CONTACTING THE UNDER SURFACE OF THE DRAINBOARD ENTIRELY AROUND SAID OPENING THEREIN, A PORTION OF THE BRACE FRAME BEING LOCATED BELOW SAID HOLDDOWN PLATE AND SCREW MEANS CONNECTING SAID HOLD-DOWN PLATE TO SAID PORTION OF SAID BRACE FRAME FOR EXERTING A DOWNWARD PULL ON SAID HOLD-DOWN PLATE FOR CLAMPING THE TERMINAL EDGES OF THE MARGINAL FLANGE OF THE SINK TIGHTLY DOWN AGAINST THE TOP SURFACE OF THE DRAINBOARD.