Universal presser foot attachment

Claim 1

A PRESSER FOOT ATTACHMENT FOR A SEWING MACHINE EQUIPPED WITH A PRESSER BAR, A MATERIAL ADVANCE MECHANISM, AND A RECIPROCATING NEEDLE BAR AND NEEDLE ASSEMBLY, SAID ATTACHMENT COMPRISING: A PRESSER FOOT COMPONENT HAVING A PLURALITY OF LATERALLY-SPACED, PARALLEL, SELECTIVELY USABLE USE POSITIONS, AND INCLUDING ONE COMPONENT OF A TWO COMPONENT SLIDE MOUNT MEANS; AND A MOUNTING SHANK CONNECTABLE TO THE PRESSER BAR, AND INCLUDING A LOWER END PORTION CONSITTUTING A SECOND COMPONENT OF SAID SLIDE MOUNT MEANS, WITH SAID SLIDE MOUNT MEANS AND SAID MOUNTING SHANK SERVING TO MOUNT THE FOOT COMPONENT ONTO THE PRESSER BAR IN A POSITION OVER THE MATERIAL ADVANCE MECHANISM, AND WITH SAID SLIDE MOUNT MEANS MOUNTING SAID FOOT COMPONENT ONTO SAID MOUNTING SHANK IN A MANNER PERMITTING LATERAL ADJUSTMENT OF SAID FOOT COMPONENT ON SAID MOUNTING SHANK, RELATIVE TO THE NEEDLE, SAID FIRST COMPONENT OF THE SLIDE MOUNT MEANS CONSISTING OF A TRANSVERSE SLIDE BAR SECURED TO THE FOOT COMPONENT, SAID SLIDE BAR HAVING A SUBSTANTIALLY UNIFORM CROSS-SECTIONAL SHAPE THROUGHOUT ITS ENTIRE LENGTH AND BEING NARROWER AT ITS BOTTOM THAN AT ITS TOP, SAID SECOND COMPONENT OF THE SLIDE MOUNT MEANS BEING A FRICTION CLAMP FORMED BY A PAIR OF SPACED APART SIDE PARTS AT THE LOWER END OF THE MOUNTING SHANK, DEFINING A TRANSVERSE SLIDEWAY THEREBETWEEN, SAID SLIDEWAY HAVING A TRANSVERSE SHAPE