Automatic counterbalancing control means for a rotating receptacle

Claim 1

A LAUNDRY APPARATUS COMPRISING AN IMPERFORATE OUTER CASING FOR RETENTION OF LAUNDRY LIQUID, A PERFORATE DRUM JOURNALED FOR ROTATION IN SAID CASING ON A HORIZONTAL AXIS, A BASE FRAME HAVING CONNECTION WITH SAID CASING SUFFICIENTLY RIGID TO CONFINE SAID CASING FOR LIMITED MOVEMENTS ON AN ARCUATE PATH ABOUT AN AXIS OFFSET FROM THE ROTATIONAL AXIS OF THE DRUM, A CONTROL MEMBER HAVING A PIVOT PIN, MEANS ON SAID BASE FRAME AND SAID CASING FORMING TWO CONFRONTING FLAT SURFACES RELATIVELY MOVABLE LINEARLY, SAID PIVOT PIN BEING POSITIONED BETWEEN AND ENGAGING SAID SURFACES TO PIVOT ON ITS AXIS IN UNISON WITH THE MOVEMENT OF SAID CASING RELATIVE TO SAID BASE FRAME, AND MEANS INCLUDING MEANS REGULATED BY SAID CONTROL MEMBER FOR FLUID BALANCING UNSYMMETRICAL CENTRIFUGAL FORCES GENERATED DURING ROTATION OF SAID DRUM TO WHICH MOVEMENTS OF SAID CASING ON SAID PATH ARE RESPONSIVE.