Fluid pressure operated oscillatory buffing head

Claim 1

AN OSCILLATORY POLISHING OR BUFFING HEAD, COMPRISING A ROTARY OPERATING TOOL, A FIXED SUPPORT, A DRIVE MOTOR OPERATIVELY CONNECTED TO SAID TOOL TO DRIVE THE SAME, MEANS MOUNTING SAID TOOL TO OSCILLATE RELATIVE TO SAID SUPPORT ABOUT AN AXIS SPACED TRANSVERSELY OF SAID TOOL, SAID MEANS EXTENDING RADIALLY OF SAID AXIS AND SAID BUFFING TOOL BEING MOUNTED ADJACENT AN OUTWARD END THEREOF FOR ROTATION, SAID MOUNTING MEANS COMPRISING AN ACTUATOR MEMBER PIVOTALLY MOUNTED COAXIALLY OF SAID AXIS OF OSCILLATION AND CONNECTED TO SAID TOOL FOR PIVOTAL MOVEMENT OF THE LATTER THEREWITH ABOUT SAID AXIS, A FLUID PRESSURE UNIT OPERATIVELY CONNECTED TO SAID MEMBER TO SWING THE SAME IN ONE DIRECTION OF SAID OSCILLATION, A FLUID PRESSURE CHECK UNIT OPERATIVELY CONNECTED TO SAID MEMBER IN TRANSVERSELY OFFSET RELATION TO THE AXIS THEREOF ON ONE SIDE OF SAID AXIS TO OPPOSE SAID MOTION OF THE MEMBER, AND A FURTHER FLUID PRESSURE CHECK UNIT OPERATIVELY CONNECTED TO SAID MEMBER IN TRANSVERSELY OFFSET RELATION TO SAID AXIS OF THE MEMBER ON THE OPPOSITE SIDE OF THE LAST NAMED AXIS, SAID FURTHER UNIT OPPOSING OSCILLATORY MOTION OF SAID MEMBER AND TOOL IN THE REVERSE OSCILLATORY DIRECTION.