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:
Dec. 13, 1983
Filed:
Nov. 18, 1980
Urs Ruch, Berlingen, CH;
Ernst Dreier, Steckborn, CH;
Fritz Gegauf Aktiengesellschaft Bernina-Nahmaschinenfabrik, Steckborn, CH;
Abstract
A feeder device for a sewing machine containing a stitch plate and provided with a material feeder which reaches through the stitch plate from below, and which is driven by a lift- and thrust rocker along a path made up of four phases. The feeder device further includes a support member and an intermediate rocker. The support member of the material feeder is arranged on the intermediate rocker, which in turn is rotatingly attached to the thrust rocker whereby the horizontal rotational axis of the support member is arranged on the intermediate rocker at a distance from the rotational axis of the intermediate rocker and substantially parallel thereto. The intermediate rocker is, along with the support member, set in vertically oscillating motion and rotated around its rotational axis by a direct connection with the lift rocker which, through proper correction, provides a movement path to the material feeder, made up of the lift and thrust movements consisting of a lift and a thrust component which are transferred to the support member in an approximately rectangular form in the effective area.