Apparatus for initiating the feed of yarn in a yarn processing machine
AssigneeDevtex
InventorBernard Isoard
Life of this patent
Estimating the term…
Abstract
A method and apparatus for initiating feed of yarn on a machine for taking yarn from a supply, processing it and rewinding it. A short length of processed yarn is led back through a series of guide wires to a vacuum receiver for holding the free end of the yarn. The wire guides are actuated to form a large loop so that the processed yarn will be fed over the input roller and the output roller, so as to pick up yarn from the supply. The lower roller of the feed roller assembly is elongated to aid in the looping and lateral in-feeding of the processed yarn loop. The previously processed yarn, after it is fed around the input and output rollers and has picked up the additional yarn to be processed is pulled from the vacuum retaining system and incorporated in the processed yarn.
Claims7
In a yarn processing machine having a supply of yarn to be processed positioned upstream of input and output delivery feed roller systems, mounted on either side of a treatment block to form therewith a spinning plane, and a winding/storage reel system positioned downstream from said output feed roller system;
- means for automatically starting up the feeding of yarn through the machine comprising:
- vacuum operated temporary storage means positioned below said spinning plane between said input and output delivery feed roller systems;
- a small supply of processed yarn wound on said winding/ storage reel positioned downstream of said second delivery feed roller system;
- means for introducing the free end of said small supply of processed yarn on said winding/storage reel into said vacuum operated temporary storage means;
- guide wire means for forming a loop of processed yarn from said winding/storage reel and temporary storage means about said input and output delivery feed roller systems;
- and
- means for causing said loop of yarn to move axially along the input and output feed delivery roller systems into the treatment block therebetween to pick up the yarn to be processed and carry it through the treatment block to the output feed delivery roller system and to the winding/storage reel for rewinding after processing.
In a machine for performing various finishing operations on yarn having a supply of yarn to be processed, positioned upstream of input and output delivery feed roller systems, mounted on either side of a processing and finishing section, and a winding/storage reel system positioned downstream of said output feed roller system;
- the method of starting up the feeding of yarn from the input rollers to the output rollers through the processing and finishing section which includes the steps of:
- providing a small quantity of processed yarn on the winding/storage reel;
- feeding the free end of the previously processed yarn from the winding/storage reel system back past the processing and finishing section into a temporary storage device positioned below and between said input and output delivery roller systems;
- causing the yarn drawn from the winding/storage reel system to form a loop around the input and output delivery feed roller systems;
- drawing the previously processed yarn loop taut between the input and output feed roller systems and displacing it axially inwardly into the yarn processing and finishing section;
- and
- causing said previously processed yarn loop to pick up the free end of the yarn to be processed as the yarn from the temporary storage device is fed about the input delivery feed rollers through the processing and finishing section and output delivery feed roller system to the winding/storage reel system.
Dependencies are inferred from the claim text.