A bobbin holder adapter facilitates replacing bobbins in a yarn feeding system called a creel, and which is formed by bearing of a constant lower table and a movable upper table on a central shaft. Further, a motion restriction component is positioned on the upper table for restricting the motion of the upper table around the central shaft bearing the upper table and for stopping the adapter at the desired point, a motion restriction housing is formed on the lower table for enabling movement of the motion restriction component, a locking ball is provided for keeping the adapter in the optimum position for unreeling yarn, a locking spring is positioned on the upper table for applying force on the locking ball, and a locking housing is formed on the lower table, on which the locking ball makes pressure as a result of the force applied by the locking spring.