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. 06, 1980
Filed:
Apr. 24, 1978
Francesco Lonati, Brescia, IT;
Costruzioni Meccaniche Lonati S.p.A., Brescia, IT;
Abstract
A circular knitting machine having tiltable pattern jacks, intermediate jacks thereon and needles over the intermediate jacks, the pattern jacks having lower butts for being raised and lowered by substantially triangular cams rigid with a cam ring. The lowering portion of the cams has a curvilinear portion joining the lowering portion and having a radius of curvature which is smaller than the ideal radius of connection between the lowering portion and the horizontal portion of the cam ring between the cams. The curvilinear portion remains at a distance from a base plane of the cam ring substantially corresponding to the distance between the lower face of the lower butt of the pattern jacks and the lower face of the pattern jacks. The curvilinear portion is followed by a further descending portion. There is therefore provided a cam lowering portion having a rounded step which causes the pattern jacks to approach progressively to the base plane, thus avoiding a kick back of the pattern jacks which in known machines operating at high speed causes breakage of the butts of the intermediate jacks.