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:
Feb. 16, 1982
Filed:
May. 06, 1980
Ernst Dreier, Steckborn, CH;
Fritz Gerauf Aktiengesellschaft Bernina-Nahmaschinenfabrik, Steckborn, CH;
Abstract
The thread take-off device of the sewing machine is arranged between the needle thread reservoir and the thread tightener. This device is provided to prevent the direct take-off of the thread by the take-up lever from the storage spool by providing, in front of the tightener, an appropriate thread reserve without requiring any change in the path along which the thread is traveling. The take-off device comprises a lever oscillating synchronously with the take-up lever at right angles to the thread path. A lever portion, located in the rest position of the take-off lever, approximately at right angles to the thread and directly beside the latter, intersects with each downward movement of the take-up lever control arm, the travel path of the thread, whereby a thread reserve is pulled off from the spool. The return of the take-off lever is effected by a spring. It is not necessary to thread the yarn into the take-off lever or into any other, additional thread guide elements added solely because of this take-off device. The device is particularly suitable for household sewing machines with installed thread tighteners.