US 3,991,545 AGranted

Pneumatic auxiliary device

AssigneeHeberlein Maschinenfabrik AG

InventorsHelmut Ritter, Max Schnetzer

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Abstract

A pneumatic auxiliary apparatus for introducing a running yarn into a false-twist texturing machine is described wherein two suction devices are arranged for attachment to perforated suction tubes extending along the machine and connected to a suction source. One such device has a suction nozzle connected by a pliable tube to a slide valve. This nozzle can be used to draw yarn through a tube leading from a false-twist imparter (associated with a heating plate) to a point where the yarn can be inserted into a delivery device that leads the yarn to the entry of a yarn guiding tube extending through a second heating device. The nozzle can then be mounted in a support at the said entry to enable the suction draw the yarn through the pliable tube to the slide valve. The valve is then closed and the valve is arranged so that, when being closed, it co-operates with a knife to sever the yarn. The second suction device is then applied to draw the yarn through the second heating device to a point where, on removal of the second heating device, it may be fed to a wind-up device.

Claims5

Dependent claims

A pneumatic auxiliary apparatus for introducing a running yarn into a false-twist texturing machine having a false-twist device in association with a first heating device, the machine also having a second heating device formed for the passage of yarn therethrough from an entry end thereof, a wind-up device for yarn after its passage through said second heating device, and suction means;

said apparatus comprising means defining a yarn path for yarn passing from said false-twist imparter towards said entry end of said second heating device, a first suction device including a suction nozzle for temporarily mounting in said yarn path in communication with said suction means to draw said yarn through said false-twist device and locate said yarn for delivery into said entry end of said second heating device, means for receiving said yarn when so located and co-operating with said suction nozzle for introducing said yarn to said entry end, means for interrupting communication between said suction means and said nozzle, a knife operative to cut the yarn when said communication is interrupted to provide a free length of yarn extending through said nozzle into said entry end, and a second suction device adapted to communicate with said suction means and for temporary mounting in a location to draw said yarn through said second heating means and towards said wind-up device.

Dependencies are inferred from the claim text.