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US 4,351,089 AGranted
Needle bar draw frame
AssigneeNordischer Maschinenbau Rud. Baader GmbH + Co. KG
InventorsJoachim Jahnke, Gunther Lehming, Helmut Kunig, Jens Nagel
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AssigneeNordischer Maschinenbau Rud. Baader GmbH + Co. KG
InventorsJoachim Jahnke, Gunther Lehming, Helmut Kunig, Jens Nagel
Estimating the term…
The invention concerns a needle bar draw frame or gill box with a needle field or gilling area of needle bars carried by chains. With the aim of attaining the usual performances in respect of speed and drawing ratio at the same quality also in the case of voluminous short-staple slivers with draw frames operating with an upper and a lower needle field, control means engaging from above into the needle field are used in a draw frame provided merely with a lower needle field. These control means are constructed as bristle-like holding down devices which are arranged particularly immediately upstream of a pair of drawing rollers and possibly shortly downstream of a pair of entry rollers, while the central region is controlled in the usual manner by a bar roller or bar chain.
Needle bar draw frame or gill box for slivers comprising needle field or gill area means of needle bars carried by chains for continuous uninterrupted movement and having spaced upstanding needles, entry roller means lying upstream of said needle field means, drawing roller means disposed downstream of said needle field means and controlling means for said slivers arranged above said needle field means and dipping in between the needles of said needle bars, wherein said controlling means includes at least one holding down device provided with a plurality of depending resiliently yielding bristles and mounted in a stationary position above said needle field means with said bristles projecting between said needles and being inclined in the direction of motion of said needle field means.
Dependencies are inferred from the claim text.