Abstract: Described is an improved apparatus for joining the helical vending coil of a vending machine to its drive mechanism and which allows easy adjustment of the angular position of that coil. Rather than using conventional screws, washers and spacers to join a coil-engaging bracket to its gear-driven drive shaft, in accordance with the invention, a tension spring or other tensioning device operatively deployed between the vending coil coupling bracket and the drive shaft normally urges the bracket into engagement with the drive shaft but will permit the two to be pulled free of one another to allow rotational adjustment without requiring disassembly of many parts or any special tools.