Importance

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Abstract

A core tube or tip holder for positioning in the axial bore of the body of cross-head die apparatus through which a wire, or the like, is drawn as a layer of flowable coating material is applied thereto. The coating material is injected through a radial bore in the body which communicates with the axial bore at a position aligned with a first annular groove in the external surface of the core tube. The first annular groove extends between opposite ends partially around the core tube. A second annular groove extends fully around the core tube. The second annular groove is positioned between the first groove and the front end of the core tube. The first and second annular grooves communicate with one another via a pair of axial grooves extending between the second annular groove and the opposite ends of the first groove. The first annular groove and axial grooves are bounded on all sides by external surface portions which lie in a uniformly tapering, conical plane.

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First Claim