Chapter 1. Mechanical Description; Needle Bar, Thread Take-Up, Lower Shaft And Shuttle Hook Mechanism - Brother BAS-311E Service Manual

Chapter 1. Mechanical description

1. Needle bar, thread take-up, lower shaft and shuttle hook
mechanism
y
u
!3
1. When the machine pulley q rotates in the direction of the arrow, the upper shaft w rotates, then it rotates the thread
take-up crank e.
2. The needle bar crank r, attached to the thread take-up crank e, moves the thread take-up lever t.
3. The needle bar u attached to the needle bar clamp y is moved up and down.
4. When the machine pulley q rotates in the direction of the arrow, the crank rod i attached to the upper shaft w moves
up and down.
5. The crank rod i oscillates the attached rock gear o.
6. The rock gear o oscillates the lower shaft !1 through the lower shaft gear !0 . The lower shaft !1 oscillates the attached
driver ! 2 and inner rotary hook ! 3 in the shuttle hook mechanism.
e
r
t
!2
BAS-311E.311EL.326E.326EL
Chapter 1. Mechanical description
w
!0
!1
q
i
o
1