Textiles: weaving – Weft manipulation – Weaving with stationary weft supply
Reexamination Certificate
2000-09-19
2001-10-23
Falik, Andy (Department: 3765)
Textiles: weaving
Weft manipulation
Weaving with stationary weft supply
C139S194000
Reexamination Certificate
active
06305435
ABSTRACT:
The invention relates to a weaving machine with an insertion system for a plurality of generally different weft threads in accordance with the preamble of claim
1
.
Systems for inserting a plurality of weft threads are known which comprise, for each weft thread, at least a thread supply, a thread store with a brake which is integrated on the thread draw-off side e.g. in the form of a brush ring, a thread monitor, a thread brake, and a thread server as a part of a color selector as well as a rapier. The weft threads travel from the thread supply via the thread store, the thread monitor, the thread brake and the thread server either into the cloth in which the weft thread is bound in or into a thread clamp in which the weft thread is held. For the insertion of a weft thread the latter is displaced by the thread server into the path of movement of the rapier and taken up by the rapier. The bound in weft thread is severed and is inserted into the opened shed. The clamped weft thread is inserted and beaten up and severed beyond the clamping position.
It proves disadvantageous in this insertion system that a thread monitor and at least one thread brake are provided for each weft thread in which the drawn in weft thread always remains. The thread brake becomes contaminated with the abraded material, so that the thread brake must be periodically cleaned in order to avoid thread breakages.
The object of the invention is to create a weaving machine with a simplified and reliably operating insertion system.
This object is satisfied in accordance with the invention by the characterizing features of claim
1
.
In the insertion system with a thread supply, a thread store, a color selector and a rapier the weft threads travel, starting from the thread supply, via the thread store and the thread server of the color selector into the cloth. In this the otherwise usual thread guidance between the thread store and the color selector is dispensed with, so that only one friction point is present, which is formed by the thread server. The color selector serves, by means of a respective thread server, a weft thread to the rapier, which takes over the weft thread and inserts it into the open shed. Only one thread brake is provided in order to brake the respectively served weft thread. Since each weft thread is drawn into the thread brake, the thread brake cleans itself.
REFERENCES:
patent: 3340903 (1967-09-01), Golobart
patent: 3926224 (1975-12-01), Vermeulen et al.
patent: 4513792 (1985-04-01), Lincke
patent: 5186218 (1993-02-01), Riesen
patent: 6112776 (2000-09-01), Berktold
patent: 0357975A2 (1990-03-01), None
patent: 0461524A1 (1991-12-01), None
patent: 0796936A2 (1997-09-01), None
patent: 0816545A1 (1998-01-01), None
patent: 2177725A (1987-01-01), None
Markward Dietmar
Meier Karl
Falik Andy
Sulzer Textil AG
Townsend and Townsend / and Crew LLP
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