Textiles: knitting – Independent-needle machines – Circular
Reexamination Certificate
2000-10-23
2001-10-30
Worrell, Danny (Department: 3741)
Textiles: knitting
Independent-needle machines
Circular
C066S040000, C066S215000
Reexamination Certificate
active
06308535
ABSTRACT:
FIELD OF THE INVENTION
The present invention pertains to the field of circular stocking knitting and knitting machines and pertains in particular to a method for the manufacture of designed knitwear on such machines.
BACKGROUND OF THE INVENTION
Various methods for the manufacture of designed knitwear on circular stocking knitting and knitting machines have already become known. One method, for example, consists of knitting with the needles of the machine at least one base yarn with, alternately, two natural yarns or two yarns of different color and with a dual selection of the needles which must form the design in the knitwear. Another method consists of knitting, in the missed stitch form, at least one base yarn with another yarn of a different color and/or type by means of a single selection of the needles that must form the design. However, the design that will thus be created in the knitted article has never been defined well and clearly, with the yarn of a different color and/or type being mixed together with the base yarn.
SUMMARY AND OBJECTS OF THE INVENTION
Thus, the object of the present invention is to propose a novel method for the manufacture of designed knitwear with only one selection of the needles, starting from a first base yarn (coarser), a second base yarn (or weft, finer than the first one) and a dyed yarn for the design. This method provides for picking up and knitting the two base yarns together in the undesigned sections of the article and for knitting the dyed yarn together with the first base yarn in the zone of the design, and discarding the second base yarn, in such a manner that the design becomes better defined, clearer, and has a solid color. The object is accomplished by selecting the needles that must form the design in the knitwear in such a way that each of them picks up and knits the dyed yarn and the first base yarn, releasing, or discarding, the second base yarn, while the remaining needles pick up and knit both of the base yarns, excluding the dyed yarn of the design.
The selection is made on a single selection unit with a first extraction of the jacks to put all of them in a position to follow a first ascending cam and to raise the corresponding needles and to be able to select the needles which must pick up the dyed yarn, while the remaining needles remain lowered and the corresponding jacks remain cancelled or returned to the initial non-ascending position, and with a second extraction with which all previously cancelled jacks follow a second ascending cam and raise the corresponding needles (which did not pick up the dyed yarn) at the level of pickup from the second base yarn, after which all the needles are driven to pick up the first base yarn before lowering the stitches.
Greater details of the present invention will become more evident from the description given below with reference to the attached schematic drawing according to the present invention.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its uses, reference is made to the accompanying drawings and descriptive matter in which a preferred embodiment of the invention is illustrated.
REFERENCES:
patent: 2573117 (1951-10-01), Thurston
patent: 2633722 (1953-04-01), Lorimer
patent: 2642732 (1953-06-01), Thurston
patent: 2917912 (1959-12-01), Levin
patent: 2934921 (1960-05-01), Green
patent: 3026698 (1962-03-01), Levin
patent: 3124948 (1964-03-01), Levin
patent: 3194030 (1965-07-01), Keziah
McGlew and Tuttle , P.C.
Sangiacomo S.p.A.
Worrell Danny
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