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:
May. 18, 1976
Filed:
Jul. 20, 1973
Applicant:
Inventor:
Herbert W Helm, Hollidaysburg, PA (US);
Assignee:
F. L. Smithe Machine Company, Inc., Duncansville, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B31B / ;
U.S. Cl.
CPC ...
156519 ; 93 6 / ; 156521 ; 156552 ; 156568 ;
Abstract
Patches for envelope windows are cut, one per envelope, from a patch web supplied at a surface speed proportional to but lower than the speed of a travelling envelope web. The cut patches are transferred from the cut-off apparatus to the envelope web by a rotary vacuum system, at a surface speed which equals the speed of the latter web, or is accelerated to this latter speed. Steps and means are provided for insuring proper positions and motions of the cut-off patch, at points where the speed thereof changes.