Sewing – Special machines – Embroidering
Patent
1997-02-18
1998-09-15
Lewis, Paul C.
Sewing
Special machines
Embroidering
D05B 1518
Patent
active
058064460
ABSTRACT:
An individual yarn feeding apparatus (10) for compensating for variations in the feed rate of individual yarn threads due to the lateral shifting of needle bars in various selected pile heights between tufts. The individual yarn feeding apparatus (10) is positioned between the yarn beam and the needle bar of a conventional tufting machine. The apparatus (10) includes a support arm (12) carried by the tufting machine, at least one thread guide (14) disposed proximate a first end (16) of the support arm (12), and at least one feed rate control device (20) received on the support arm (12). The thread guide (14) separates the individual yarn threads as they pass from the yarn beam, through the apparatus (10) and to the needle bar. The feed rate control device (20) enables the definition of an accent yarn feed path (22) and a base yarn feed path (24). In operation, the feed rate control device (20) varies in the speed of weaving the accent yarn threads to compensate for the shifting of the needle bars, thereby controlling the pile height achieved in tufting to define a particular design and pattern of the finished tufted product.
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Berger M. Steven
Morrison Gerald
Lewis Paul C.
Modern Techniques, Inc.
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