Automatic lubrication for a feed-offthe-arm sewing machine

Claim 1

A FEED-OFF-THE-ARM SEWING MACHINE HAVING A FRAME INCLUDING A HORIZONTAL BED, A BED SHAFT JOURNALED IN SAID BED, MEANS FOR IMPARTING ACTUATION TO SAID BED SHAFT, FEEDING MECHANISM AND LOOPER MECHANISM IN SAID BED, A PLURALITY OF ROTARY ACTUATING ELEMENTS ON SAID BED SHAFT AND INCLUDING AN ECCENTRIC HAVING A PERIPHERAL BEARING SURFACE AND MEANS FOR SECURING SAID ECCENTRIC ON SAID BED SHAFT IN ANGULARLY ADJUSTED POSITION COMPRISING A RADIALLY EXTENDING INTERNALLY THREADED BORE IN SAID ECCENTRIC AND INTERSECTING SAID BEARING SURFACE AND A SET SCREW MOUNTED IN SAID BORE, A BLOCK SURROUNDING SAID PERIPHERAL BEARING SURFACE OF SAID ECCENTRIC AND HAVING AN APERTURE PROVIDING ACCESS TO SAID SET SCREW, MEANS OPERATIVELY CONNECTING SAID ROTARY ACTUATING ELEMENTS AND SAID LOOPER MECHANISM AND SAID FEEDING MECHANISM FOR IMPARTING ACTUATION TO THE LATTER UPON ROTATION OF SAID BED SHAFT AND INCLUDING A FORK COOPERATING WITH SAID BLOCK ON OPPOSED SURFACES SPACED ANGULARLY FROM SAID APERTURE, SAID BED SHAFT HAVING AN ENDWISE EXTENDING BORE, MEANS FOR PROVIDING LUBRICANT UNDER PRESSURE TO SAID BORE DURING THE OPERATION OF THE MACHINE, RADIAL BORES IN SAID SHAFT AND SAID ACTUATING ELEMENTS AND INTERSECTING SAID ENDWISE BORE AND THE BEARING SURFACES OF SAID ROTARY ACTUATING ELEMENTS, MEANS FOR CLOSING SAID APERTURE IN SAID BLOCK, AND MEANS FOR RELEASABLY SECURING SAID CLOSURE MEANS IN POSITION TO PREVENT THE ESCAPE OF LUBRICANT THROUGH SAID APERTURE AND TO EXPOSE SAID APERTURE TO PROVIDE ACCESS TO SAID SET SCREW FOR THE PURPOSE OF ANGULARLY ADJUSTING SAID ECCENTRIC.