front internal face of the cover 20 it has heretofore been known in the art that the thread loop is slackened owing to the abrupt lowering stroke of any thread taking up lever of the type although the usual feed pick up spring is presented in the passageway to be passed by the thread the slackened thread loop tends to be formed into a ballooning at the portion passing through the guiding eye of the needle thread taking up lever as shown in fig2 the needle thread t is supplied from any suitable spool or other source of supply on a peg 47 which need not be specifically designated here through the upper guiding eye or slot 22 middle eye 24 tension device 36 front guide eye 23 slot type eye 42 at the extremity of the lever 10 to the eye of the thread carrying needle not shown as will be seen in fig2 the thread runs along the left side face of the guide 3 between the upper eye 22 and middle eye 24 while running along the right hand side of the guide plate between the tension device 36 and the front eye 23 as shown in dotted line and thereafter restores the left side location in order to allow such passageway of the needle thread t three clearances are formed as designated by the numerals 44 to 46 respectively in fig4 and 5 the upper clearance 44 is formed between the left side face of the guide.