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:
Jun. 02, 1987
Filed:
Jul. 18, 1986
Arthur Bagnall, Manchester, GB;
Spencer Wright Industries, Inc., Dalton, GA (US);
Abstract
A tufting machine has a needle bar drive mechanism including a first shaft on which drive eccentrics are mounted for driving connecting rod means which reciprocate the needle bar push rods and thus the needle bar. A second shaft is mounted adjacent the first shaft and gears mounted on the respective shafts are in meshing engagement with each other so that upon rotation of one shaft the other shaft rotates in the opposite direction. Counterbalancing weights on the needle bar driving shaft are disposed 180.degree. out of phase with the reciprocation of the needle bar, and counterbalancing weights on the other shafts counterbalance the rotational forces of the needle bar driving shaft. The other shaft is drivingly rotated by the tufting machine motor and also carries the hook and knife drive eccentrics. The construction is such that the reciprocating and rotating forces are counterbalanced by the two shafts.