Self-dumping finishing and polishing machine

Claim 1

IN A FINISHING AND POLISHING MACHINE THE COMBINATION OF A HOPPER ADAPTED TO RECEIVE FINISHING OR POLISHING MATERIAL AND THE PIECES TO BE FINISHED OR POLISHED HAVING A ROUNDED SEMI-CYLINDRICAL BOTTOM AND A VIBRATORY MOTOR HAVING ITS AXIS PARALLEL TO THE AXIS OF SAID SEMI-CYLINDRICAL BOTTOM AND CARRYING AN ECCENTRIC WEIGHT ADAPTED TO IMPART ROTARY VIBRATIONS TO SAID HOPPER AND ITS CONTENTS MOUNTED DIRECTLY ON SAID HOPPER, SAID HOPPER HAVING AT ONE END THEREOF ADJACENT THE BOTTOM A DISCHARGE OPENING FOR THE CONTENTS OF SAID HOPPER AND A COVER FOR SEALING SAID OPENING, A TILTABLE FRAME, AND MEANS ON SAID TILTABLE FRAME SUPPORTING SAID HOPPER AND MOTOR AS A UNIT FOR FREE MOVEMENT IN SPACE, AND MEANS SUPPORTING SAID TILTABLE FRAME FOR TILTING ON AN AXIS GENERALLY PERPENDICULAR TO THE AXIS OF SAID HOPPER AND MEANS FOR TILTING SAID TILTABLE FRAME WHEREBY SAID HOPPER MAY BE SIMULTANEOUSLY TILTED AND VIBRATED TO EMPTY SAID HOPPER WHEN SAID DISCHARGE OPENING IS OPEN.