Patent ID: 7448415

Claim:
A cam motion mechanism for a weaving loom, said mechanism comprising at least two cams each defining at least one running track for a follower roller, each cam being provided with a center bore through which a drive shaft extends, tightening means for applying a tightening force to said cams parallel to said drive shaft, a section of said shaft being non-circular in cross section, at least one washer-spacer mounted about and being axial movable relative to said shaft when said tightening force is not applied and having an internal edge which is non-circular so as to fix said washer-spacer to rotate with said shaft, and said washer-spacer bearing into firm abutting contact with at least one of said cams upon application of the tightening force to thereby fix, by compressive adherence, said at least one of said cams and said washer-spacer so that said at least one of said cams rotates with said drive shaft.