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:
Nov. 01, 1977
Filed:
Oct. 15, 1976
Applicant:
Inventor:
Robert Conrad Hauf, Upper Montclair, NJ (US);
Assignee:
The Singer Company, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D05B / ;
U.S. Cl.
CPC ...
1121 / ; 112272 ; 112277 ; 112235 ;
Abstract
An automatic buttonholing device which uses a specially modified presser foot into which electrical contacts are inserted for actuating an electromechanical buttonholing assembly. The operator places small conductive markers on the fabric at the top and bottom of the desired buttonhole location. When the contacts on the presser foot ride over the markers, a circuit is completed and proper steps in the buttonholing sequence are initiated.