Importance

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Abstract

An automatic narrow-fabric needle loom weaving system employing a hook secured to the mounting plate of the loom on the side thereof into which the needle enters the shed and around which the weft thread is wound in order to form a straight edge without contraction of the warp threads during beat-up on the side of the woven material opposite the knitted selvage edge produced by a latching needle pick. An improved weft thread feed is provided with a simple, relatively inexpensive mechanical drive disk that can be easily adjusted to vary the amount of weft thread fed during each pick. A weft thread support spring structure provides tensioning support for the weft thread and reduces wear on the leaf spring members. An improved header frame assembly prevents undesired twisting of the header elements and makes it easier for a technician to change the machine over from one weaving pattern to the next. Eccentrically mounted drive disks are provided for the respective sets of oppositely reciprocated header frames. A lever arm adjustable drive is provided for the take-up roll which simplifies the problem of adjusting the number of picks provided for a given length of woven material during loom operation. A drive for the latching needle of the loom also is provided which provides a horizontal reciprocating motion to the latching needle in a simple manner. A spring biased braking arrangement for braking rotation of the warp beam supplying warp thread from the supply spool also is made available.

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First Claim