Loader bucket with a vibrating blade

Claim 1

A LOADER BUCKET COMPRISING LIFT AND TILT ARM MEANS OPERATIVELY CONNECTED TO SAID BUCKET FOR SELECTIVELY MAINTAINING IT IN AN EARTH CARRYING OR DIGGING POSITION, A BELLCRANK ASSEMBLY PIVOTALLY MOUNTED ON SAID BUCKET, A BLADE RECIPROCABLY MOUNTED ON A FIRST ARM OF SAID BELLCRANK ASSEMBLY WHICH IS SUBSTANTIALLY SHORTER THAN A SECOND ARM THEREOF, SAID BLADE ARRANGED FOR TO AND FRO MOVEMENT RELATIVE TO SAID BUCKET IN RESPONSE TO PIVOTAL MOVEMENT OF SAID BELLCRANK ASSEMBLY, THE LONGITUDINAL AXIS OF THE SECOND ARM OF SAID BELLCRANK ASSEMBLY ARRANGED IN SUBSTANTIAL UNDERLYING RELATIONSHIP WITH RESPECT TO SAID BUCKET WHEN THE BUCKET IS IN EARTH DIGGING POSITION, ECCENTRIC MEANS MOUNTED ON SAID BUCKET AND OPERATIVELY CONNECTED TO THE SECOND ARM OF SAID BELLCRANK ASSEMBLY FOR IMPARTING VIBRATORY MOVEMENT TO SAID BLADE IN THE DIRECTION OF BLADE MOVEMENT AND LUBRICATING MEANS COMPRISING A HOUSING ARRANGED TO FORM A CLOSED COMPARTMENT ENCLOSING THE SECOND ARM OF SAID BELLCRANK ASSEMBLY AND SAID ECCENTRIC MEANS FOR LUBRICATION THEREOF IN RESPONSE TO OSCILLATION OF SAID SECOND ARM.