Thread supply device
AssigneeAktiebolaget IRO
InventorKurt Arne Gunnar Jacobsson
Life of this patent
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Abstract
A device for supplying a textile or metallic thread to a processing device. The thread issuing from a storage bobbin is wound tangentially on a storage body and is unwound endwise therefrom beneath a resilient brake ring which abuts a conical support surface on the storage body. The brake ring can be adjusted in the axial direction of the storage body relative to the support surface by means of an adjusting means which can be actuated in response to the thread tension.
Claims11
In a thread supply device having a storage drum on which the thread issuing from a storage bobbin can be tangentially wound and from which the thread can be endwise unwound, the storage drum having a conical brake surface over which the thread passes as it is unwound endwise from the drum, and resilient brake ring positioned in surrounding relationship to the brake surface and movable axially relative thereof for varying the contact brake pressure between the brake ring and the brake surface, the thread as withdrawn endwise of the drum passing between and being engaged by the brake ring and the brake surface, the improvement comprising adjusting means coacting between the brake ring and the withdrawn thread for automatically axially moving said brake ring relative to said brake surface in response to variation in the tension of the withdrawn thread downstream of the brake ring, said adjusting means causing the braking pressure between the brake surface and the brake ring to be increased in response to a decrease in the tension of the withdrawn thread, and vice versa.
Dependencies are inferred from the claim text.