portions 61 of the bobbin holding fingers 6 in contact with the pin 1h extend vertically accordingly the portions 61 do not slide along the pin 1h and hence the bobbin holding fingers 6 are not pushed upward even if a horizontal force f 1 acts on the bobbin holding fingers 6 when a sliding member 4 pivotally supporting the bobbin fingers 6 is moved upward the portions 61 are separated from the pin 1h and the bobbin holding fingers 6 are retracted by gravity into the reduced section 1b of a bobbin hanging tube 1 as shown in fig5 fig6 shows a modification of the bobbin holding finger 6 shown in fig4 bobbin holding fingers 6 shown in fig6 similarly to those shown in fig4 have portions 61 which extend vertically when the bobbin holding fingers 6 are projected fully from the reduced section 1b by the pin 1h the portions 61 of the bobbin holding fingers 6 shown in fig6 is longer than those of the bobbin holding fingers shown in fig4 the bobbin holding fingers 6 shown in fig6 can be surely retracted by gravity as indicated by broken lines 6a in fig6 fig7 is a bottom view of the bobbin hanging tube 1 of the bobbin hanger shown in fig1 the lower end 1k of the bobbin.