Singer 471U - B Lower Thread Cutter Mechanism; [Lo] Presser Bar Lifter Mechanism; Clamping Foot

U] Lower thread cutter mechanism
O
0
1. When the lowerthread cutter leverO movesinthe direction ofthe arrow, the lowerthread cam leverO fixedon
the lower thread cutter lever O moves in the direction of the arrow.
2. The roller attached to the end of the lowerthread cam leverO fits inthe cam grooveon the lowerthread cam
O and moves the lower thread cutter link 0 back and forth.
3. The thread cutter driving lever 0 is linked to the end of the lower thread cutter link 0 and this transmits a
circular movement to the thread cutter driving lever 0 using the stud screw 0 as pivot point.
4. The lower thread retainer 0 and the lower movable knife 0 are fixed on the thread cutter drivinglever 0, and
the lower movable knife 0 and lower fixed knife 0 come together to cut the thread.
Presser bar lifter mechanism
0
0
1. When the lower thread trimming lever0 movesin the direction of the arrow, the presserbar lifterconnecting
rod 0 transmits the movement to the presser lifter
0.
2. The presserlifter0 is fixed to the presserliftershaft0 and moves the presserbar lifter0 fixed to theend ofthe
presser lifter shaft 0up and down.
3. The presser bar lifter link0 islinkedto the presserbar lifter 0, and the bottom of this islinkedto the presser
bar clamp 0 and moves it up and down.
4. The presserbar 0 isfixedon the presserbar clamp0 and causesthe presserfoot rollerunit0 connectedto its
bottom to move up and down.
5. The feedarm support 0 fixed to the lengthfeed arm 0 catcheson the presserfoot rollerunit0 and movesthe
clamping foot 0 up and down.
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From the library of: Superior Sewing Machine & Supply LLC