An independent claim is also included for an installation of such a bobbin support on a sewing machine with the shaft (10) vertical. The bobbin (3) positioned so that the yarn is taken directly to the first yarn guide, the lower end of the bobbin being at the height of the first yarn...
The thread monitor at a sewing machine, to detect the end of the lower thread, has at least one opening at the base of the lower section of the bobbin housing, which is larger than the drillings in the bobbin flanges, aligned with a recess in the upper section of the bobbin housing....
A sewing machine with a rotary or oscillating shuttle and a socket for receiving a bobbin carrying the shuttle yarn. The edge of the socket is provided with a guide slot through which the shuttle yarn passes to a tensioning arm which maintians the shuttle-yarn under tension. On the ...