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, 1994
Filed:
Jun. 18, 1992
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An automatic sewing machine control device in which the movement of the presser unit which takes place while the thread take-up lever moves from the bottom dead point to the top dead point is minimized thereby to increase the tension of the upper thread. Even when the load weight applied to a bi-axial drive mechanism increases or the thickness of the sewing material changes, excellent seams can be formed. In a control device for an automatic sewing machine, a start timing unit is provided which starts the bi-axial drive mechanism with respective timing modes. A plurality of drive control data for a drive motor and stepping motors are stored in memory unit which correspond to the load weights applied to the bi-axial drive mechanism and the thicknesses of materials to be sewed.