Textilmaschinenfabrik Dr. Ernst Fehrer Aktiengesellschaft

Rudolf Leuchtenmuller

Ludwig Legl

Johann Schofberger

Manfred Kapeller

An apparatus which serves to needle a nonwoven web and comprises at least one needle beam for carrying at least one needle board, a rocker, which carries the needle beam and comprises at least two parallel arms, which are pivoted to a frame, and a slider-crank mechanism, which is coupled to the rocker or the needle beam. To permit an adjustment of the lift of the needle beam it is proposed that the slider-crank mechanism is adapted to be pivoted to the needle beam or the rocker at different distances from the pivotal axis of the rocker.

Cranking mechanism for a needle board for needling a nonwoven web

In an apparatus for needling a web, which apparatus comprises a brushlike web support consisting of individual brush plates, it is desired to substantially eliminate an influence of the joints between the brush plates on the surface pattern of the needled nonwoven web. To that end the bristle tufts of those rows of tufts which extend adjacent to and along the joints between the brush plates are carried individually or in groups in alternation by the two brush plates which are disposed on opposite sides of the joint.

Apparatus for needling a nonwoven web

It is desired to provide an apparatus for needling a nonwoven web with a brushlike pierceable support and to provide surface patterns independently of a control of the depth of penetration of the needles. To that end the bristles of the covering of bristles of the pierceable support vary in accordance with a predetermined pattern as regards the bristle spacing and/or the extent to which the bristles protrude toward the nonwoven web.

A needle board for an apparatus for needling a non-woven fabric comprises a carrier plate, which is provided with an elastic layer for retaining needles, which are detachably inserted in through holes and have angled needle butts, which are supported on the surface of the board. In order to ensure an improved guidance and retention of the needles the elastic layer is provided on that surface of the board which is remote from the needle butts.

Needle board for an apparatus for needling a non-woven fabric

In order to ensure a desirable withdrawal of the felt in an apparatus for needling a felt from one side, the stripper plate (3) is provided on that side which faces the support (2) for the felt with guide ribs (7), which extend between the longitudinal rows of holes (4) and protrude from the underside surface of the plate and have a height amounting to 0.2 to 2 times the diameter of the holes.

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Schwertberg, Austria

Rudolf Leuchtenmuller