The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 05, 1983
Filed:
Jun. 12, 1981
Hellmut Lorenz, Remscheid-Lennep, DE;
Barmag Barmer Maschinenfabrik AG, Remscheid, DE;
Abstract
A yarn false twisting apparatus and method is provided which permits ready conversation from S to Z twist, or vice versa. The apparatus comprises a pair of friction discs which are rotatably mounted on a common carrier plate, and the discs are rotated in opposite directions by a drive system which includes a whorl mounted to each supporting shaft, and an endless drive belt having a run which engages opposite sides of the two whorls. The carrier plate is designed to permit the respective positions of the two discs to be reversed, and the direction of rotation of each disc to be reversed, to thereby convert from S to Z twist, or vice versa. In other embodiments, conversion between S and Z twist may be effected by the axial displacement of the two discs, or by the use of the two pressure applying members which define two separate twisting zones and which are alternately actuated.