Textiles: weaving – Weft manipulation – Weaving with stationary weft supply
Reexamination Certificate
2000-12-11
2001-10-23
Falik, Andy (Department: 3765)
Textiles: weaving
Weft manipulation
Weaving with stationary weft supply
Reexamination Certificate
active
06305433
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a weaving machine air supply block having conduits extending between an inlet and an outlet, and valves switched and/or controlled by valve drives.
2. Description of the Related Art
An air supply block of the initially cited kind is known from the patent document WO 97/29231. This air supply block is mounted between a source of compressed air and a pair of main airjet nozzles which insert a filling into a shed. The known air supply block comprises an inlet connected to the source of compressed air and an outlet connected to the pair of main airjet nozzles. The inlet and outlet are connected by conduits within the air supply block into which are integrated a switched shutoff valve and an adjustable throttling valve. When a weaving machine must process a substantial number of different fillings, a commensurately large number of pairs of main airjets nozzles and furthermore a correspondingly large number of air supply blocks will be required.
SUMMARY OF THE INVENTION
The objective of the present invention is to so design an air supply block of the initially cited kind that feeding comparatively many main air jet nozzles with compressed air is enabled without using a large size compressed-air supply.
This problem is solved by providing two outlets extending along a longitudinal side of a substantially right parallelipipedic housing, each outlet being associated with its own valves.
This invention offers the advantage that using one air supply block, two sets of main air jet nozzles can be supplied with compressed air, as a result of which the required equipment space is relatively small. Such air supply blocks are especially appropriate for airjet weaving machines which process several different fillings.
In a further embodiment of the invention, the said housing is free of inlets, outlets and valve drives on two mutually opposite longitudinal sides. As a result, the air supply blocks can be assembled tightly against each other and compactness is enhanced again.
In yet another embodiment of the invention, the inlet(s), the conduits and the outlets are configured substantially in a common longitudinal plane of the said housing. In this manner the width of the housing of the air supply block can be lessened in the transverse direction and consequently a relatively large number of such units can be received within a relative small space.
Further features and advantages of the invention regarding in particular configuring the air supply blocks within a small space are stated in the further sub-claims.
Embodiments of the invention are shown below in relation to the drawings.
REFERENCES:
patent: 4850398 (1989-07-01), Van Bogaert
patent: 5417250 (1995-05-01), Markey
patent: 6109309 (2000-08-01), Dornier et al.
Bacon & Thomas PLLC
Falik Andy
Picanol N.V.
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