inclined toward the periphery of the cylinder starting from the base of the bevels 14 from the above description it can be seen that when a needle 3 is transferred e g from the upper to the lower cylinder see fig3 and 4 and the latch 5 is closed on the lower beak 4 of the needle as the needle is displaced toward the interior of the groove of the lower cylinder one achieves the resting of the latch 5 upon the corner edges 12 39 in this manner the latch is forced to open while the needle advances in its respective groove the complete opening of the latch 5 and the passage of the open latch 5 to the chamber 10 may be accomplished then by the tab 39 of the lower slider 7 as shown in dotted outline in the lower portion of fig3 which in turn is displaced in manner conventionally known per se toward the needle until the lower beak is hooked and the transfer of the needle from the upper cylinder 1 to the lower one 2 is completed the same operation takes place when the needle is transferred in the opposite sense by the corner edges 12 39.