Pile loop forming assembly

Details Pile loop forming assembly Pile loop forming assembly

2000-05-26

2001-05-22

Falik, Andy (Department: 3741)

Textiles: weaving

Warp manipulation

Pile

Reexamination Certificate

active

06234212

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a pile loop forming assembly for a loom, a method of forming pile loops on a loom and a loom.
2. Description of the Related Art
In the past lances for forming loops were unreliable. The loop forming yarn was not passed from one side of the lance to the other reliably so that it could be wrapped about a lance to form a loop.
SUMMARY OF THE INVENTION
The loop forming assembly reliably transfers yarn from one side of a lance to the other by moving the lance between a first and second lateral position so that the yarn is positively guided to one side or the other.
According to one aspect of the present invention there is provided a pile loop forming assembly for a loom, the assembly including a reed having a plurality of reed fingers spaced apart to define reed spaces inbetween adjacent pairs of said reed fingers, a plurality of loop forming lances, each lance extending through a respective reed space in order to divide the reed space into first and second longitudinal regions and to divide the first longitudinal region into a first warp yarn accommodating space and a second warp yarn accommodating space, heald means for normally retaining a loop forming warp yarn in said first longitudinal region during shed formation, the heald means being selectively operable to move the loop forming warp yarn from said first longitudinal region to the second longitudinal region so as to move said yarn out of said first or second warp yarn accommodating space, deflection means operatively connected to each lance for laterally deflecting the lance toward one or other of the reed fingers defining the reed space through which the lance passes, such that the lance resides at first and second lateral positions respectively, the lance when at said first lateral position co-operating with said one reed finger to deflect said loop forming yarn into said first warp yarn accommodating space when moving from said second longitudinal space and into said first longitudinal space and when at said second lateral position co-operating with said other reed finger to deflect said loop forming yarn into said second warp yarn accommodating space.
Preferably the lances are pivotally deflected to move between said first and second lateral positions.
Preferably the reed is a beat-up reed for the loom.
According to another aspect of the invention there is provided a loom incorporating a pile loop forming assembly as defined above.


REFERENCES:
patent: 1180015 (1916-04-01), Crossland
patent: 2057615 (1936-10-01), Hall Jr. et al.
patent: 2414064 (1947-01-01), Schulz et al.
patent: 2619990 (1952-12-01), Cady
patent: 3450167 (1969-06-01), Lygo
patent: 1059663 (1965-08-01), None

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