Brother International T-8420B Instruction Manual - English - Page 28

Corner sewing method (T-8450B, 8750B), 5-8-1. To stop the needle bars (right and left)

Get Brother International T-8420B PDF manuals and user guides View all Brother International T-8420B manuals
Add to My Manuals
Save this manual to your list of manuals

Page 28 highlights

5. PREPARATION BEFORE SEWING 5-8. Corner sewing method (T-8450B, 8750B) NOTE: If using this machine in place of a single-needle machine, remove the needle which is not being used. In such cases, do not use the procedures given below to stop the unused needle bar from moving, otherwise damage to the machine may result. 5-8-1. To stop the needle bars (right and left) y Operate the stop lever after the needle has penetrated the material and has stopped moving. y Do not sew at speeds of over 1,000 rpm while one of the needle bars has been stopped. Needle stop Move the stop lever (1) to the "L" position. 3128M Move the stop lever (1) to the "R" position. Needle stop 3129M Press the push lever (2). The stop lever (1) will then return to its original position automatically. Push 3130M 5-8-2. Number of stitches: quick-reference guide Sewing angle 40° No. of stitches 6 3131M Sewing No. of angle 30° 40° 50° 60° 70° 80° 90° 100° 110° 120° 130° 140° Stitches 2 4.6 3.8 3.2 2.7 2.2 1.8 1.5 1.1 3 4.6 3.5 3.0 2.5 2.1 1.8 1.5 1.2 4 4.4 3.4 2.8 2.3 1.9 1.6 1.3 5 4.8 3.5 2.7 2.2 1.8 1.5 1.3 6 4.0 2.9 2.3 1.9 1.5 1.3 7 3.7 2.5 2.0 1.6 8 3.0 2.2 1.7

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
T-8420B, 8450B, 8720B, 8750B
5. PREPARATION BEFORE SEWING
22
5-8. Corner sewing method (T-8450B, 8750B)
NOTE:
If using this machine in place of a single-needle machine, remove the needle which is not being used. In such cases, do not
use the procedures given below to stop the unused needle bar from moving, otherwise damage to the machine may result.
5-8-1. To stop the needle bars (right and left)
Operate the stop lever after the needle has penetrated the
material and has stopped moving.
Do not sew at speeds of over 1,000 rpm while one of the
needle bars has been stopped.
<To stop operation of the left needle bar>
Move the stop lever (1) to the “L” position.
<To stop operation of the right needle bar>
Move the stop lever (1) to the “R” position.
<To resume twin-needle sewing>
Press the push lever (2).
The stop lever (1) will then return to its original position
automatically.
5-8-2. Number of stitches: quick-reference guide
<For 1/4” needle width>
Determine the stitch length from the chart above to make beautiful corner stitching.
The number of stitches of the outer needle varies according to the combination of sewing angle and stitch length.
[Example]
For a sewing angle of 40
°
and a stitch length of 2.9 mm, the number of stitches becomes 6.
3131M
30°
40°
50°
60°
70°
80°
90°
100°
110°
120°
130°
140°
2
4.6
3.8
3.2
2.7
2.2
1.8
1.5
1.1
3
4.6
3.5
3.0
2.5
2.1
1.8
1.5
1.2
4
4.4
3.4
2.8
2.3
1.9
1.6
1.3
5
4.8
3.5
2.7
2.2
1.8
1.5
1.3
6
4.0
2.9
2.3
1.9
1.5
1.3
7
3.7
2.5
2.0
1.6
8
3.0
2.2
1.7
Sewing
angle
No. of
Stitches
Sewing angle 40
°
No. of stitches 6
3130M
3128M
3129M
Needle
stop
Push
Needle
stop