Textiles: knitting – Feeding – With yarn treatment
Reexamination Certificate
2001-04-18
2001-10-30
Worrell, Danny (Department: 3765)
Textiles: knitting
Feeding
With yarn treatment
C028S271000, C066S12500A, C066S00100R
Reexamination Certificate
active
06308537
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to nozzles and more particularly to a nozzle for knitting machine with improved characteristics.
BACKGROUND OF THE INVENTION
A conventional nozzle mounted in a knitting machine is shown in
FIG. 4
comprising a U-shaped fastening block
1
comprising a top
11
, a bottom
12
, an inlet hole
14
through the bottom
12
in communication with an external air compressor, a bore
16
through top
11
aligned with inlet hole
14
, a stop member
65
, an abutment member
61
, a sleeve
6
, a screw
62
, a spring
63
, and an adjusting cap
64
wherein elements
65
,
61
,
6
,
62
,
63
and
64
are provided in bore
16
from bottom to top; a female fastening member
2
on the vertical side of U-shaped fastening block
1
; a sliding block
3
on the open side of U-shaped fastening block
1
and comprising a through inlet channel
31
in communication with inlet hole
14
; a male fastening member
4
extended from side of sliding block
3
corresponding to female fastening member
2
; and a block member
5
on the top of sliding block
3
and having a V-shaped groove
51
and an aperture
52
on the V-shaped groove
51
being in communication with inlet hole
14
and inlet channel
31
.
In blowing operation, yarn is first placed on V-shaped groove
51
. Then engage male fastening member
4
and female fastening member
2
to mount sliding block
3
in U-shaped fastening block
1
wherein inlet hole
14
, inlet channel
31
, and aperture
52
are in communication one another. External high pressure air is directed to blow yarn through inlet hole
14
. As to the cleaning of block member
5
, it is simply required to disengage male fastening member
4
from female fastening member
2
prior to removing sliding block
3
from U-shaped fastening block
1
. However, the previous design suffered from several disadvantages. For example, the elements provided in bore
16
are complicated. Further, arms
42
of male fastening member
4
tends to break or malfunction after a long time of use (i.e., engaging with female fastening member
2
by pressing the arms
42
). Furthermore, the assembly is complex and the manufacturing cost is relatively high.
SUMMARY OF THE INVENTION
It is thus an object of the present invention to provide a nozzle for knitting machine. In blowing operation, yarn is first placed on a V-shaped groove. Then move a sliding block toward a seat with a riser of the sliding block inserted into an opening of the seat. Next pivot a trigger member to cause a raised member of a n-shaped trigger member to be disposed vertically. Thus, the sliding block is confined in a U-shaped opening of a fastening block. Hence, external high pressure air is directed to blow onto yarn. The yarn blowing or cleaning operation according to the present invention is made much convenient as compared with prior art. Further, the constituent components are simplified. Thus, assembly is simple and manufacturing cost is reduced.
The above and other objects, features and advantages of the present invention will become apparent from the following detailed description taken with the accompanying drawings.
REFERENCES:
patent: 4335588 (1982-06-01), Bos
patent: 4547938 (1985-10-01), Cullen et al.
patent: 4769880 (1988-09-01), Heinrich et al.
patent: 5839176 (1998-11-01), Lin
patent: 6163944 (2000-12-01), Lin
Bacon & Thomas PLLC
Worrell Danny
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