Lawson Hemphill, Inc.

Kendall W Gordon, Jr

Avishai Nevel

David F Bonneau

John B Lawson

Steven Leary

Itzchak Porat

A system or method for electronically simulating fabrics to assist in grading yarn and fabric qualities, in which the diameter or other qualities of one or more yarn samples along the total length of the samples is measured, and representations of the measured yarn qualities are evaluated in a fabric pattern to assist evaluation of the effects of the yarn quality variations on fabric which potentially would be produced from the sampled yarn.

System and method for electronically evaluating predicted fabric qualities

System and method for electronically evaluating predicted fabric

A computer-controlled device for determining relative yarn hairiness. Yarn is moved past a light source to create a yarn shadow, and an imaging device captures the yarn shadow. The imaging device includes a number of separate, closely-spaced light sensing elements, each with an output level related to the amount of light shining on the element. A selected sensing element output level is established as indicative that an element is blocked by the yarn. The width of a number of closely-spaced portions of the yarn is determined, at two different selected sensing elements output levels, to distinguish the yarn hairs from the yarn core.

System and method for determining yarn hairiness

A system for moving yarn under substantially constant tension, including a translationally-fixed pivoting device, having a neutral position, for applying tension to the yarn, and a variable-speed yarn drive for moving the yarn across the pivoting device. The rotational position of the pivoting device is determined in relation to its neutral position, and in response, the speed of the yarn drive is altered to move the pivoting device closer to its neutral position for maintaining a relatively constant tension on the yarn.

Yarn test system which moves yarn at high speed under constant,

A method of automatically determining the number of filaments making up a synthetic yarn, or other yarn such as staple natural fibers comprising removing a small cross-section of the yarn to create a plurality of small filament pieces, and automatically counting the small filament pieces to determine the number of filaments in the yarn.

Method of automatically determining the number of filaments in a

A method of determining the presence of contaminants in cotton fibers, including the steps of heating the cotton fibers, and analyzing infrared emanations from the heated cotton to determine areas within the cotton with non-cotton infrared signatures as indicative of contaminants in the cotton.

Method of detecting contaminants in cotton fibers

A system and method for electronically comparing yarn lengths to assist in grading yarn qualities, in which the yarn diameter or another yarn quality at a number of locations along the total length of the yarn is measured, and representations of the measured qualities are displayed to allow comparison of portions of the yarn.

System and method for electronically displaying yarn qualities

A system for electronically comparing yarn lengths to assist in grading yarn appearance quality in which the yarn diameter at a number of locations along the total length of the yarn is determined, and representations of the diameters of the yarn are displayed to allow comparison of portions of the yarn.

System for electronically grading yarn

A system and method for testing yarn altering devices in which the yarn is moved under precision yarn controls such as speed and tension, and then through the yarn altering device. Downstream of the yarn altering device the yarn is imaged, and from the image the widths of closely-spaced portions of the yarn are determined to establish the effect on the yarn of the yarn altering device.

System and method for testing yarn altering devices

A yarn profile analyzer and method in which the yarn is moved under substantially constant tension through an imaging area including a light source and a spaced light sensing array. The width of closely spaced portions of the yarn passing through the imaging area is then determined from the array output, and the widths are stored and then analyzed for a variety of parameters.

Growing community of inventors

North Kingston, RI, United States of America

Kendall W Gordon, Jr