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:
Mar. 05, 1985
Filed:
Oct. 06, 1983
Applicant:
Inventor:
Flavio Bisson, Cava Manara PV, IT;
Assignee:
Necchi Societa per Azioni, Pavia, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D05B / ;
U.S. Cl.
CPC ...
112294 ;
Abstract
An upper thread cutting unit in buttonhole sewing machines wherein a lever is provided for connecting and disconnecting the support of the thread cutting unit to and from a supporting member, connected via a lever and rod system, to the stop device of the sewing machine. Two appropriately set springs force the thread cutting unit, at the end of the sewing cycle, under the needle to catch and cut the upper thread and force the unit away from the needle to permit raising higher the work presser frame.