Compensating thread brake
AssigneeKarl Mayer Textilmaschinenfabrik GmbH
InventorsBodgan Bogucki-Land, Peter Schmuck
Life of this patent
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Abstract
A compensating thread brake useful, in particular, with warping creels. The thread brake has a rotatable roller whose circumference is at least partially surrounded by and drivable by thread. The roller is connected to the rotor of a turbine. A mechanical thread tension comparator by way of its setting member, influences a throttle in the path of the turbine inlet or outlet stream. The setting member may, preferably, be a throttle plate which regulates the inlet or outlet ports of turbine T. In this manner, the thread tension may be controlled without frictional load on the threads or the need to provide seals against oil or the like. Additionally, an eddy current brake can be provided for the nominal setting of the basic thread tension.
Claims19
A compensating thread brake for a warping creel for affecting tension in thread delivered from a thread creel, comprising:
- a housing;
- a roller rotatably mounted on said housing and adapted to have at least partially wound around its circumference said thread, said roller being operable to rotate in response to motion of said thread;
- a turbine having a turbine axis and a rotor connected in a torque transferring relation to said roller to produce a turbine flow along a predetermined path and to affect braking forces acting upon the thread on said roller, said turbine having at least one port along said predetermined path;
- comparison means for detecting mechanical thread tension in thread delivered from said thread creels;
- and
- a setting member coupled to said comparison means for influencing the braking forces acting upon the thread at said roller, said setting member comprising a throttle acting in said predetermined path of said turbine flow to throttle said turbine flow, said member being operable to alter the effective cross-sectional area of said at least one port of the turbine.
Dependencies are inferred from the claim text.