Cylinder bed sewing machine with an attachment box bed extension

Claim 1

A SEWING MACHINE COMPRISING IN COMBINATION, A MAIN BED, A STANDARD RISING ABOVE SAID MAIN BE, A CANTILEVER CYLINDER BED EXTENDING FROM A FRONT PORTION OF SAID MAIN BED, AND A SUPPORTING LEG EXTENDING FROM A REAR PORTION OF SAID MAIN BED, THE CYLINDER BED, THE MAIN BED AND THE SUPPORTING LEG DEFINING AND BOUNDING THREE SIDES OF AN OPEN ENDED CAVITY, A COMBINATION BED EXTENSION AND ATTACHMENT BOX DESIGNED TO BE RECEIVED IN SAID OPEN ENDED CAVITY, AND MEANS FOR SECURING SAID COMBINATION BED EXTENSION AND ATTACHMENT BOX TO SAID MAIN BED AND SAID CYLINDER BED.