| 摘要 |
PURPOSE: To provide a means for changing the strokes of needles of a tufting machine by changing the throws of eccentrics mounted on a revolving shaft without adding unnecessary weights. CONSTITUTION: This demountable rotary cam has upper and lower portions which can be coupled and securely mounted on a rotatable shaft and can also be demounted and interchanged with other similar eccentrics having different throws. The demountable rotary cam is particularly suited to vary the stroke of the needle bar in the tufting machine and an adjusting means is provided to maintain the proper relationship between the needles and loopers over a range of strokes. |
