14 and is supported by the housing 12 such that the compartment 14 is divided into an upper compartment 20 and a lower compartment 22 referring to fig2 the center divider 18 includes a full bobbin opening 24 for allowing bobbins to fall from the upper compartment 20 into the lower compartment 22 as will be discussed below the center divider 18 further includes an empty bobbin opening 26 located adjacent to the full bobbin opening 24 the function of which is discussed below as best shown in fig3 the housing 12 further includes a first planar wall 28 and a second planar wall 30 opposite the first wall 28 the first 28 and second 30 walls are interconnected by a third planar wall 32 and an opposite fourth planar wall 34 the walls 28 30 32 34 define the storage compartment 14 and support the center divider 18 between the upper and lower compartments 20 22 a first opening 36 and a second opening 38 are formed in the first wall 28 the first opening 36 communicates with the upper compartment 20 of the compartment 14 and the second opening 38 communicates with the lower compartment 22 of the compartment 14 a third opening 40 and a fourth opening 42 are formed in the fourth wall 34.