Winding – tensioning – or guiding – Support for a strand material holder – With brake for holder and/or strand
Reexamination Certificate
1999-07-09
2001-05-29
Walsh, Donald P. (Department: 3653)
Winding, tensioning, or guiding
Support for a strand material holder
With brake for holder and/or strand
C242S131100, C242S14700M, C242S156100, C242S566000, C242S615300
Reexamination Certificate
active
06237866
ABSTRACT:
RELATED APPLICATION
The present application claims the priority of the Japanese Patent Application No.10-34948 filed on Feb. 17, 1998.
BACKGROUND OF THE INVENTION
1. Technical Field
The present invention relates to a yarn unwinding tension stabilizer and a yarn unwinding tension stabilizing apparatus for a warping creel using this stabilizer, in more detail, relating to such stabilizer that can stably unwind a yarn from various types of yarn suppliers in such shapes as cheese and cone by effectively coping with such drawbacks as slide of wound layers on a yarn supplier and slippage of yarn loops therefrom due to the ballooning of an unwound yarn and so forth as well as such apparatus that facilitates to simultaneously adapt those stabilizers on a multiple number of yarn suppliers suspended on a warping creel.
2. Prior Art
As well known, when a multiple number of yarns are treated by a warper or warping sizer, the yarns are simultaneously unwound from the respective yarn suppliers in such shapes as cheese and cone which are suspended on a warping creel. In this process, if the unwinding speed is overdone, it is known that there occur slide of wound layers on a yarn supplier and slippage of yarn loops therefrom due to the ballooning of an unwound yarn and so forth so as to cause large fluctuation of the unwinding tension on the yarn, with the result that there occurs yarn cut during the operation, and especially a hard twist or finished yarn becomes very susceptible to kinky texture.
To restrain the ballooning of the unwound yarns and deal with such drawbacks, such arrangement is conventionally known that the respective suppliers suspended on a warping creel are covered with a cylindrical sheet with an appropriate weight attached thereto, which contacts the unwound yarns.
The inconvenience in this prior method to stabilize a yarn unwinding tension is that as the diameter of the supplier becomes smaller as the unwinding operation proceeds, the degree of contact between an unwound yarn and the cylindrical sheet becomes smaller, with the result that optimum tension stabilization can not be obtained consistently throughout the operation. Also, it takes a lot of time and labor to cover the respective suppliers, which it is common are suspended on the creel with more than 1000 pieces at a time, with a cylindrical sheet and to attach a weight thereto.
DISCLOSURE OF THE INVENTION
In view of the above-mentioned inconvenience in the prior method to stabilize a yarn unwinding tension by means of said sheet, the present invention is to provide a yarn unwinding tension stabilizer capable of stably unwinding yarn from various types of suppliers in such shapes as cheese and cone without causing any slide of wound layers on the suppliers or slippage of yarn loops therefrom due to the ballooning of unwound yarns and the like.
The present invention is also to provide a yarn unwinding tension stabilizing apparatus for a warping creel wherein the above-mentioned stabilizers can be set on a multiple number of yarn suppliers suspended on the creel at one time in an easy operation.
As a means to realize the above tension stabilizer, the present invention has adopted an arrangement comprising a supporting member (
1
) provided with an opening (
10
) of a diameter and a plurality of elastic wiring materials (
2
) disposed within said opening (
10
), the respective wiring materials (
2
) being fixed at both ends thereof on the periphery of said opening (
10
) and convexly curving towards a center of said opening (
10
) while partly overlapping one another, an unwinding area (
20
) being formed at said center, which is enclosed with those overlapped wiring materials (
2
), wherein tension acting on a yarn (Y) unwound from a yarn supplier (B) and threaded into said area (
20
) is stabilized by making said wiring materials (
2
) in contact with the surface of the yarn wound on said supplier (B).
Also, as a means to realize the above tension stabilizing apparatus for a warping creel, the present invention has adopted a mechanism, which is disposed as opposed to a plurality of pegs (P) aligned in rows in the creel and stabilizes tension acting on a yarn (Y) unwound from the respective yarn suppliers (B) suspended on said pegs (P), said stabilizing apparatus comprising a plurality of tension stabilizers (
3
) respectively made of a supporting member (
1
) provided with an opening (
10
) of a diameter and a plurality of elastic wiring materials (
2
) disposed within said opening (
10
) wherein the respective wiring materials (
2
) are fixed at both ends thereof on the periphery of said opening (
10
) and convexly curve towards a center of said opening (
10
) while partly overlapping one another and an unwinding area (
20
) is formed at said center, which is enclosed with those overlapped wiring materials (
2
); a frame (
5
) supporting those tension stabilizers (
3
) in alignment with the suppliers (B) suspended on said pegs (P); and a means (
6
) to horizontally move said frame (
5
) so as to make said tension stabilizers (
3
) simultaneously approach to and retract from said suppliers (B).
REFERENCES:
patent: 948945 (1910-02-01), Smith
patent: 2366101 (1944-12-01), Grothey
patent: 2838922 (1958-06-01), Gift
patent: 2953318 (1960-09-01), Hasler et al.
patent: 2965330 (1960-12-01), Hoekstra
patent: 3461691 (1969-08-01), Ballard
patent: 3632062 (1972-01-01), Sole
patent: 4699331 (1987-10-01), Zorini
patent: 593200 (1977-11-01), None
patent: 623086 (1981-05-01), None
patent: 2841210 (1979-04-01), None
patent: 534896 (1993-03-01), None
patent: 56-33353 (1981-03-01), None
Pham Minh-Chau
Snider Ronald R.
Snider & Associates
Walsh Donald P.
Yagikuma & Co., Ltd.
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