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:
Oct. 16, 1984
Filed:
Mar. 07, 1983
Kurt Vollmar, Weilerbach, DE;
Abstract
A setting mechanism for the feed dog of a sewing machine having a setting member secured to a setting shaft for determining the amount and direction of the feed movement for the feed dog, comprises a reversal lever which is pivotable between two end positions and biased into one of the end positions by a return spring. To be able to vary the setting torque by which the return spring opposes the setting motion of the reversal lever, the other end of the return spring is connected to the reversal lever through a linkage. This linkage includes an end member having its pivotal axis coaxial with the setting shaft. The torque of the return spring, which normally increases with the progressing pivoting of the reversal lever may be reduced by a linkage design wherein the torque acting on the reversal lever through this linkage reverses within the actuating range of the lever.