When disk 1 rotates together with crank 5, secured to the disk, about fixed axis B, slay 2 oscillates about fixed axis A. To change the bobbin in shuttle a which moves together with slay 2, angle lever 3 turns about fixed axis C so that it takes a new bobbin from the magazine (not shown in the drawing) and places it into the shuttle, pushing out the used bobbin. For this purpose, lug b on disk 1 engages lever 4 at definite times. Lever 4 turns about fixed axis D and transmits a turning motion, through intermediate link 6, to lever 3 about axis C.
$887$LW,FD$