Washing unit providing an up-and-down movement of a workpiece in a cleaning bath

Claim 1

IN A MACHINE FOR CONTINUOUSLY APPLYING A WASHING LIQUID TO A UNITARY WORKPIECE, A TANK PROVIDING AN ELONGATED BASIN ADAPTED TO CONTAIN AND RETAIN A CHARGE OF THE LIQUID, A RELATIVELY RIGID OPEN WORKPIECE SUPPORTING RACK MOUNTED IN THE TANK BASIN FOR AN UP-AND-DOWN SLOSHING MOVEMENT OF A CARRIED WORKPIECE IN A LIQUID CHARGE IN THE BASIN, AT LEAST TWO PAIRS OF SIDE RODS EXTENDING UPWARDLY FROM MUTUALLY OPPOSITE RACK SIDES, SUPPORT RODS EXTENDING UPWARDLY THROUGH THE BASIN BOTTOM TO SUPPORTING CONTACTS WITH THE SIDE RODS OF THE RACK AND DISPOSED THROUGH MUTUALLY PARALLEL UPSTANDING AND IMPERFORATE GUIDE SLEEVES EXTENDING ABOVE THE LIQUID LEVEL IN THE BASIN BOTTOM IN LIQUID-RETAINING SEALED RELATION THERETO TO SUPPORTEDLY ENGAGE SAID SIDE RODS ABOVE SAID LIQUID LEVEL, AND A POWERACTUATED MEANS ON THE MACHINE COOPERATIVE WITH SAID SUPPORT RODS FOR SIMILARLY SUPPORTING AND CONTINUOUSLY RECIPROCATING THE RACK BY REASON OF THE ENGAGEMENT OF THE SUPPORT RODS WITH SIDE RODS OF THE RACK.