This is the first Waring Blendor model no. F.C.I. W15, made in 1937-38. I 'm trying to remove the motor, but I don't know how to separate the square drive at the top end of the motor shaft. This is necessary to allow the motor to be removed from the outer casting. I believe that the square drive is either pressed on or threaded onto the rest of the shaft.

Blenders - Waring