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:
Oct. 19, 1982
Filed:
Sep. 10, 1980
Paul Surkamp, Kempen, DE;
Heinz Sonnenberg, Viersen, DE;
Maschinenfabrik Carl Zangs Aktiengesellschaft, Krefeld, DE;
Abstract
This invention relates to a rotation dobby having a key coupling between a drive shaft and an eccentric device for the movement of the heddles, the key being mounted under spring action in a radially extending recess in an eccentric disk arranged in a crank arm and being engageable and disengageable in accordance with a pattern into and out of an axially extending groove of the drive shaft at two diametrically opposite coupling places by means of a shift rod which can be controlled in accordance with a pattern and engages via a coupling member into a groove of the key which is open in the axial direction of the drive shaft. In order to simplify the engagement and disengagement, the key is pressed, in engaged position, by a compression spring into the groove of the drive shaft, the spring force of the spring being greater than the centrifugal force which acts on the key during revolution, two spring-loaded lock slides which receive the outer end of the disengaged key between them being provided on each crank arm at each coupling place.