US 5,341,851 AGranted

Loom having at least two sectional warp beams

AssigneeSulzer Reuti AG

InventorsKlaus Berktold, Ernst Eberhard

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Abstract

A loom with two or more sectional warp beam, each associated with a measuring device for detecting the length of at least one of the warp threads, which runs off the sectional beam in question during a given advance of warp thread. Each measuring device has a measuring roller which is urged against a number of warp threads, e.g., against the circumference of the wound sectional warp beam and which is driven by them during the advance of warp thread, so that it is able to transmit a corresponding control signal to a control equipment. The control equipment regulates the r.p.m. of the sectional warp beams in dependence upon these control signals in the sense of keeping constant the predetermined length of any given warp thread advance. The invention is particularly useful for weaving off sectional warp beams having different winding diameters for assuring a homogeneous appearance of the weave across its entire width.

Claims8

Dependent claims

A loom comprising at least two sectional warp beams about which warp threads are wound and from which warp threads are run off during weaving;

tensioning means for guiding the warp threads being run off;
first sensing means for each sectional warp beam for detecting tension in the warp threads being run off the beams;
control equipment operatively coupled with the first sensing means for regulating a rate or rotation of the warp beams when warp threads are run off;
second sensing means provided for each warp beam for detecting a length of warp thread being run off the associated sectional warp beam for a given advance of warp thread from the beam during weaving, the second sensing means generating a control signal reflecting said length of warp thread run off during said given advance;
and means for feeding the control signal from the second sensing means to the control equipment;
the control equipment being adapted to influence the rate of rotation of the section warp beams in dependence on said control signal for maintaining constant the length of warp thread being run off the warp beams during the given advance of the warp threads.

3 more elements

Dependencies are inferred from the claim text.