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US 5,492,286 AGranted
Thread brake
AssigneeSobrevin Societe de brevets industriels-Etablissement
InventorBruno Motta
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AssigneeSobrevin Societe de brevets industriels-Etablissement
InventorBruno Motta
Estimating the term…
An apparatus for the variable braking of traveling threads, wires, or the like, in particular for use in connection with the introduction of the filling thread in looms, in which the thread (F) passes between two brake parts which can be brought into spring application against each other, one of which forms a spring element and the other an abutment, one of the brake parts being movable in order to vary the braking. In order to improve the efficiency, it is provided that the abutment is developed as a substantially cylindrical body (2) which is acted on rotatably by the spring element (1), having a first partial section (4, 5) which is substantially circular in cross section and a second partial section (8) which has at least one circumferential region (6, 7) of reduced cross section, the abutment being seated on the shaft (1) of an electric motor which is developed as stepping motor (9).
In an apparatus for variable braking of traveling threads and the like in connection with the introduction of a filling thread in looms, the thread passing between two brake parts forming a thread brake, with one of the two brake parts being a spring, one of the two brake parts being movable away from the other of the two brake parts to vary the braking, the improvement comprising
A method of operating a thread brake comprising two brake parts which can be brought into resilient application, one of which parts forms a spring and the other an abutment, with thread passing through the brake parts, and an electric stepping motor operatively connected to the abutment, the method comprising the steps of
Dependencies are inferred from the claim text.