Abstract Apparatus for manufacturing bulky yarns employing flowing gaseous or liquid media by the false twist technique. It consists of a tubular yarn guide chamber and a lateral conduit for the fluid medium disposed perpendicularly to the axis of the guide chamber and opening into same tangentially to the internal wall thereof, the guide chamber being cylindrical and at the yarn inlet end having a drastically reduced cross-sectional area compared to the cross section of the remainder of the chamber. The fluid inlet is located immediately downstream of the yarn inlet end (in the direction of movement of the yarn) in the enlarged portion of the chamber. The latter narrows at a point downstream of the fluid inlet (in the direction of movement of the yarn) and subsequently opens into a tubular duct the internal wall of which contains groovelike recesses over at least part of its length.
Inventors
👤 Friedrich Lorenz
👤 Walter Laber
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-10 01:06
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
151 words
Apparatus for the manufacture of bulky yarns using a fluid medium by the false twist technique, said apparatus comprising of a tubular yarn guide chamber and an inlet for the fluid medium, said inlet being disposed perpendicularly to the axis of the guide chamber and opening into same tangentially to the internal wall thereof, the guide chamber being cylindrical and having a yarn inlet end of drastically reduced cross section compared with the cross section of the remainder of the chamber, and the fluid inlet being located immediately downstream of the yarn inlet end (in the direction of movement of the yarn) in the chamber, wherein the yarn guide chamber, at a constriction narrows downstream of the fluid inlet (in the direction of yarn movement), and thereby opens into a tubular duct, of reduced cross section the internal wall of which contains groovelike recesses over at least part of its length.
Claim 2
Dependent Claim
151 words
Apparatus for the manufacture of bulky yarns using a fluid medium by the false twist technique, said apparatus comprising of a tubular yarn guide chamber and an inlet for the fluid medium, said inlet being disposed perpendicularly to the axis of the guide chamber and opening into same tangentially to the internal wall thereof, the guide chamber being cylindrical and having a yarn inlet end of drastically reduced cross section compared with the cross section of the remainder of the chamber, and the fluid inlet being located immediately downstream of the yarn inlet end (in the direction of movement of the yarn) in the chamber, wherein the yarn guide chamber, at a constriction narrows downstream of the fluid inlet (in the direction of yarn movement), and thereby opens into a tubular duct, of reduced cross section the internal wall of which contains groovelike recesses over at least part of its length.
Claim 3
Dependent Claim
21 words
Apparatus as claimed in claim 1, in which the groovelike recesses are disposed parallel to the axis of the tubular duct.
Claim 4
Dependent Claim
21 words
Apparatus as claimed in claim 1, in which the groovelike recesses are disposed perpendicularly to the axis of the tubular duct.
Claim 5
Dependent Claim
17 words
Apparatus as claimed in claim 1, in which the groovelike recesses extend helically around the duct axis.
Claim 6
Dependent Claim
18 words
Apparatus as claimed in any preceding claim, in which the constriction of the yarn guide chamber is conical.