Browse Prior Art Database

Tufting Method and Apparatus

IP.com Disclosure Number: IPCOM000090030D
Original Publication Date: 1969-Jan-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Lourie, JR: AUTHOR

Abstract

The control of pile height in the manufacture of tufted carpets is accomplished by using a single, stationary profile blade. This has a row of individually settable profile elements P, drawing B, one for each pile yarn. Elements P are selectively positioned to provide the desired profile configuration.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 54% of the total text.

Page 1 of 2

Tufting Method and Apparatus

The control of pile height in the manufacture of tufted carpets is accomplished by using a single, stationary profile blade. This has a row of individually settable profile elements P, drawing B, one for each pile yarn. Elements P are selectively positioned to provide the desired profile configuration.

Before the pile yarns enter the loopers in the tufting machine, not shown, they pass over their respective profile elements P, drawing C. Elements P are set to selected positions in accordance with the pile height variations desired in a row of tufts. As the tufting operation progresses, the profile settings are changed where necessary to accommodate variations in pile height from row to row. Each pile yarn is bent around its respective element P to form a measured amount of slack in the yarn according to the element P setting. Elements P then are retracted to permit the loopers to take up the slack in their yarns and thus form the tufts. The length or height of each tuft is determined by the amount of slack in its yarn.

By using only a single, stationary profile blade having variably settable elements P, the necessity is avoided for using a plurality of profile blades with fixed configurations that must be sequentially transported to and from the slack- forming station and which must be replaced each time there is a change of design. The element P settings can be controlled by any medium capable of storing the pile height data for the...