Textilmaschinenfabrik Dr. Ernst Fehrer Aktiengesellschaft

Augustin Kalteis

Hannes Pum

Heinz Hofholzer

Feyerl Gunther

There is described a roller drive for the feed of a web of material, in particular for the web feed of a needling machine, comprising an electric drive motor (2) for at least one feed roller (1), which is connected to a mains-operated intermediate DC circuit (5). To create advantageous constructional conditions it is proposed that the mechanical drive train between the drive motor (2) and the feed roller (1) includes an additional electric motor (9) likewise connected to the intermediate DC circuit (5), which additional motor can be driven as generator by the drive motor (2).

Roller drive for the feed of a web of material, in particular for the

To ensure that a needle board of a needling machine can be detached from the needle beam in a simple manner and without a substantial expenditure of work, the needle beam is provided with spring-biased mechanisms for clamping the needle board and actuators associated with said clamping mechanisms are provided on the machine frame or on the stripper.

Needling machine

In apparatus for applying a sliver at a bias to an endless backing web in the making of a paper machine felt, a needle machine is preceded by a sliver feeder, which is operable by a traversing drive to perform a traversing movement across the working width of the needle machine. Irregularities can be avoided because an automatically controlled position-correcting mechanism is provided, which serves to compensate any deviation of the actual course of one longitudinal edge of the backing web from a predetermined, desired course of said longitudinal edge, and means are provided for controlling the traversing drive so that the traversing movement of the sliver feeder will be influenced by changes of the width and/or length of the backing web.

Growing community of inventors

Traun, Austria

Augustin Kalteis