Tufting-Maschine mit einem Riementrieb

摘要

The drive assembly 5 comprises a spindle assembly 24 driven by the tufting machine drive shaft 16 with crank assemblies 52a, 52b affixed to each of the spaced ends of the spindle shaft, which comprise offset stub shafts which orbit the longitudinal axis of the spindle shaft A. Links 58a, 58b are pivotally fastened to drive levers 66a, 66b which transmit the reciprocating motion of the links as rocking motion to the the looper drive shaft 31, and the knife drive shaft 34, respectively, in timed relation with the tufting machine drive shaft 16. Adjustment of the stroke of the looper drive shaft, and knife drive shaft, with respect to the tufting machine is by rotation of the crank assemblies, provided with timing indicia 55a, 55b, with respect to the spindle shaft. Also each of the levers 66a, 66b include an elongate slot to allow further stroke adjustment of the looper drive shaft and the knife drive shaft.