Carpet looms
AssigneeThomson Shepherd and Company Limited
InventorGeoffrey Wilson Dewhirst
Life of this patent
Estimating the term…
Abstract
A method for producing Axminster carpets having two different heights of pile in the same pile forming pick on an Axminster gripper loom. The method comprises engagement of selected yarn carriers on a lifting bar when said yarn carriers move for pile yarn draw-off whereafter the selected yarn carriers are raised and pile yarn drawn-off the selected carriers is raised out of the plane defined by pile yarn drawn-off non-selected carriers.
Claims8
A method of increasing the length of selected tufts in each row of tufts produced by an Axminster gripper loom having yarn carriers and a gripper associated with each carrier, comprising the steps of:
- a. gripping a plurality of yarns in the grippers,
- b. moving all the yarn carriers away from said grippers, to draw yarn off the yarn carriers, and toward a lifting means into a position wherein a part of at least one selected yarn carrier is in the path of upward movement of said lifting means, all the drawn yarns being in substantially a single plane in the region between the yarn carriers and the grippers,
- c. raising said lifting means to move at least one selected yarn carrier so as to move its respective yarn out of the plane occupied by the unselected yarns in the region between the yarn carriers and the grippers,
- d. moving an element crosswise of the yarns along a path such that the element engages only the selected yarn which has been moved out of the plane occupied by the unselected yarns so as to lengthen that yarn by drawing additional yarn off only the selected yarn carrier, and
- e. cutting all the yarns.
An Axminster gripper loom comprising:
- a. yarn carriers having abutments, and grippers,
- b. lifting means,
- c. means for moving said yarn carriers away from said grippers, to draw lengths of yarn from the yarn carriers, and toward said lifting means into a position wherein an abutment of at least one selected yarn carrier is in the path of upward movement of said lifting means, all the drawn yarns being in substantially a single plane in the region between the yarn carriers and the grippers,
- d. means for raising said lifting means to engage said abutment and move at least one selected yarn carrier to shift its respective yarn out of the plane occupied by the unselected yarns in the region between the yarn carriers and grippers,
- e. means for engaging only said selected yarns to lengthen them by drawing additional yarn off the selected yarn carriers, and
- f. means for cutting all the yarns.
Dependencies are inferred from the claim text.