Knitting technology, Third Edition

19.8
The Shima Seiki electronic selection system
Figure 19.2 illustrates the front (F) and back bed (B) cam systems of a 
Shima Seiki
two (knitting) system model SEC. It is indicated that the cam carriage is traversing

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Automatic power flat knitting
227
from right-to-left so that the butts of the knitting elements enter from the left,
passing through four systems:
1
From the left, the first system is transferring loops from the back bed to the
front bed. ‘4’ is a loop transfer cam and ‘6’ is a loop receiving cam.
2,3
The next two systems contain knitting cams, ‘2’ being clearing cams and ‘3’
being stitch cams.
4
Finally, the right system is transferring loops from the front bed to the back
bed. Delivering cam ‘5’ is introduced to raise butts onto transfer cam ‘4’.
The 
Shima
model SES provides the same facilities but with only two systems, each
of which contains full camming for knitting and two-way transferring; this virtually
halves the width of the cam-box.
Figure 19.3 illustrates the arrangement of elements in one needle bed, e.g. the
front bed; the back bed has an identical arrangement.
Latch needle
(a) has a spring clip for rib loop transfer.
Needle jack
(b) is pivotally connected to the needle and provides the single posi-
tion knitting butt that can be selected to follow the raising cam (2) (Fig. 19.4) profile,
lifting the needle from miss to tuck or knit.
When the tail of the needle jack is depressed by the head of the re-positionable
presser jack
(c), the knitting butt is sunk out of contact with the raising cam (2) and
the needle remains at the height it has already reached.
Fig. 19.1
Mechanical jacquard selection on a V-bed flat machine.

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228
Knitting technology
(e)
(c)
(b)
(B)
18B
(b)
(c)
(F)
(e)
4
6
5
7
12
13
11
3
1
2
3
3
1
2
3
14
15
10
14
15
9
7
12
13
5
6
4
16
17
18F
20
19
19
19
19
20
20
19
19
20