Textiles: manufacturing – Thread finishing – Surface modification of running length
Reexamination Certificate
2003-02-28
2004-12-28
Vanatta, Amy B. (Department: 3765)
Textiles: manufacturing
Thread finishing
Surface modification of running length
C028S272000
Reexamination Certificate
active
06834418
ABSTRACT:
BACKGROUND OF THE INVENTION
(a) Field of the Invention
The invention relates to an interlacing air nozzle, and more particularly, to a interlacing air nozzle that increase the airtightness of the yarn groove thereof, thereby evenly interlacing the yarn thereof without affecting the interlacing air nozzle with abrasion as a whole.
(b) Description of the Prior Art
Referring to
FIG. 1
showing a conventional elevational view of a prior art for interlacing yarn; wherein a threading slot
11
having an opening at the top thereof is provided at the center of a blow pipe
1
, and at the bottom center of the threading slot
11
of the blow pipe
1
is provided with an air inlet
13
in communication with a joint
12
; a yarn
2
is placed into the threading slot
11
for interacting with the air inlet
13
, such that airflow discharged from the threading slot
11
passes through the air inlet
13
and interlaces the yarn
2
. However, such prior art has a defective design that causes environmental pollution and production cost wastage caused by the airflow discharged upward (as indicated by the arrow pointing upward
FIG. 1
) from the totally open blow pipe
1
when interlacing the yarn
2
. In addition, airtightness of such prior art is unsatisfactory that the yarn
2
is weft unevenly with a poor quality.
Referring to
FIGS. 2
,
3
and
4
showing a conventional elevational view, a side view and an enlarged sectional view of another prior art interlacing the yarn
2
when opened and closed, respectively, a main body
3
therein comprises a top member
31
capable of up-and-down lifting and covering, and at the rear of the top member
31
is provided with an axis
311
connected with a base
35
. The front bottom relative to the axis
311
is further provided with a tappet
312
. On the base
35
is disposed with a sliding member
33
capable of sliding back and forth further provided with a sealing cover
32
for pressing against a groove A
331
. At the rear top of the sliding member
33
is disposed with a groove B
322
for interacting with the tappet
312
. In order to place the yarn
2
for interlacing, at the center of the sliding member
33
is disposed with a groove
331
A further provided with an air inlet
333
at the center bottom thereof. At the bottom of the base is provided with a joint
34
in communication with the air inlet
333
for conducting injected airflow, and at the interior of the joint
34
is an air outlet
341
. When the top member
31
moves up and down, the sliding member
33
displaces back and forth using the tappet
312
for placing the yarn
2
. Moreover, the sliding groove bottom surface
335
of the sliding member
33
is abraded due to the sliding groove
334
provided at the bottom of the sliding member
33
, as indicated by the abraded plane
336
in FIG.
4
. When the sliding groove
334
is abraded and pressure is added at the jet air outlet
341
, air leakage that causes unstable jet airflow is resulted (as indicated by the arrow in FIG.
4
), thus bringing about uneven weaving and poor quality of yarn. Consequently, fabrics weaved from the yarn
2
are undesirable in quality and offers inadequate competitiveness. The aforesaid shortcomings have long since bothered industrialists and consumers, and therefore, it is a prime task to provide an interlacing air nozzle that maximizes the efficiency and practical values thereof.
SUMMARY OF THE INVENTION
An object of the invention is to provide an interlacing air nozzle, wherein the angle difference produced from closing a front top member thereof is capable of increasing tightness, and the dual-leverage principle thereof is utilized for simultaneously moving the front and rear top members up and down such that the front top member is horizontally pressed downward without wearing or abrading the structure as a whole.
The described technical shortcoming of the prior art is mainly due to the abrasion of the sliding member thereof, and uneven interlacing of the yarn resulted from an air leakage caused by the unsatisfactory tightness when covered during processing. For solving the problem, the invention provides a technical method, wherein parallel lug shoulders having twin peaks are provided at the top of the base, the front and rear lugs thereof are provided with a connection piece that connects the front and rear lugs and the bottom portions of the rear and front top members for forming a dual lever. In addition, the front top member is provided with a flexible spring and an airtight washer member, such that the airtight washer member is fixed at a sliding member disposed at the top of the front base for moving up and down and horizontally pressing downward.
The angle difference produced from closing the structure according to the invention increases the tightness thereof, the dual-leverage principle thereof enables the front and rear top members to simultaneously move up and down while the structure as a whole is also capable of horizontally pressing downward. The airtight washer member is able to move and up and down without abrading the structure, and the spring adds further airtightness to the airtight washer member.
REFERENCES:
patent: 4936000 (1990-06-01), Nabulon et al.
patent: 5146660 (1992-09-01), Ritter
patent: 5839176 (1998-11-01), Lin
patent: 5964015 (1999-10-01), Sear
patent: 6148490 (2000-11-01), Bertsch
patent: 6163944 (2000-12-01), Lin
patent: 6311376 (2001-11-01), Hinchliffe et al.
patent: 6438812 (2002-08-01), Jansen
Bell New Ceramics Co., Ltd.
Vanatta Amy B.
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