Abstract: An adapter plate for a computer-controlled embroidering machine which allows the use of the embroidering machine for both embroidering flat and tubular goods and caps without removing the cap driver. The adapter plate is attached to the X-axis drive system of the embroidering machine and includes a base plate which is provided with a cloth spreading frame for holding a workpiece. The cloth spreading frame is mounted to the base plate in a position which holds the workpiece over a cut out formed in one edge of the base plate, the cut out allowing access to a workpiece which is secured to the cap driver when the cloth spreading frame is not being used to hold a flat or tubular workpiece.