Abstract: A coherent, bulked, continuous-filament, heather-dyeable yarn having a more natural, spun, wool-like appearance in carpets when dyed is produced by overfeeding lighter dyeing filaments to a greater degree than the darker dyeing ones through a turbulent fluid-jet intermingling zone.

Abstract: A coherent, bulked, continuous-filament, heather-dyeable yarn having a more natural, spun, wool-like appearance in carpets consists of lighter dyeing filaments which comprise 20-50% of the total yarn filaments and which are 15-45% longer than the darker dyeing filaments in the yarn. The yarn is produced by overfeeding the lighter dyeing filaments to a greater degree than the darker dyeing ones through a turbulent fluid-jet intermingling zone.

Abstract: A bulked continuous multi-filament nylon yarn is intermittently debulked by passing a stream of heated gas through the yarn while it is under tension. The product comprises a bulked continuous filament yarn having adjacent sections of greater and less bulk with nodes of interlaced filaments between each section.

Abstract: A spray machine comprising a track and a carriage movably supported on the track carrying a cam actuator and a fluid spray gun. An air cylinder is mounted above the track having a piston slidably disposed therein with opposite piston ends coupled with the carriage. A pair of air lines are connected to opposite ends of the cylinder and to a source of compressed air through a valve controlling the flow of air delivered to the air cylinder. A valve actuator is mounted adjacent opposite ends of the track for activating the valve upon engagement with the cam actuator as the carriage approaches the track ends.