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Title: Textile serving spool
Claims: I claim: 1. A textile serving spool for supporting a strand or yarn wound thereon and adapted for mounting on a rotatable mandrel and for serving the strand or yarn about a continuous object passing axially through the center of the mandrel, the spool comprising a hollow cylindrical core and a pair of integral annular flanges respectively at opposite ends of the core, the core and flanges being made of breakable material, each of the flanges having grooves in its surface extending between inner and outer peripheries thereof and corresponding to like grooves in the opposite flange to form pairs of grooves, the core having a slot for each pair of grooves, and having a rib extending axially along the interior thereof, each slot extending radially through the wall of the core and axially along the core between corresponding grooves but terminating a short distance from each of the flanges to leave continuums of breakable material respectively at opposite ends of the core whereby when the flanges are fractured by breaking along the grooves the lines of fracture propagate across the continuums of material to the corresponding slots in the core and the core and flanges separate into at least two pieces for easy removal from the mandrel, and a liner in the core effective to frictionally engage with the mandrel, the liner having a slit extending from end to end to permit removal thereof from around the mandrel and being disposed in the core with the slit cooperatively engaging the rib extending axially along the interior of the core whereby the liner cannot rotate relatively to the core. 2. A textile serving spool as claimed in claim 1 wherein the core and flanges are molded of breakable plastic. 3. A textile serving spool as claimed in claim 1 including inwardly extending flanges respectively at opposite ends of the core to restrain the liner from moving relatively to the core axially thereof. 4. A textile serving spool for supporting a strand or yarn wound thereon and adapted for mounting on a rotatable mandrel and for serving the strand or yarn about a continuous object passing axially through the center of the mandrel, the spool being made of breakable material and comprising a hollow cylindrical core and a pair of integral annular flanges respectively at opposite ends of the core, each of the flanges having grooves in its surface extending between inner and outer peripheries thereof and corresponding to like grooves in the opposite flange to form pairs of grooves, the core having a slot for each pair of grooves, each slot extending radially through the wall of the core and axially along the core between corresponding grooves but terminating a short distance from each of the flanges to leave continuums of breakable material respectively at opposite ends of the core whereby when the flanges are fractured by breaking along the grooves the lines of fracture propagate across the continuums of material to the corresponding slots in the core and the spool separates into at least two pieces for easy removal from the mandrel, the thickness of each flange decreasing from its inner periphery to its outer periphery and the depth of each groove in the flange varying with the thickness of the flange in such a manner that the thickness of material to be broken along the bottom of the groove is constant across the flange, and radially extending, integral stiffening ribs on the surface of each flange, the thickness of the ribs being inversely proportional to the thickness of the flange whereby the thickness of the flange plus the thickness of the ribs is constant across the flange. 5. A textile serving spool as claimed in claim 4 including at least one circumferentially extending rib on the surface of each flange. 6. A textile serving spool for supporting a strand or yarn wound thereon and adapted for mounting on a rotatable mandrel and for serving the strand or yarn about a continuous object passing axially through the center of the mandrel, the spool being made of breakable material and comprising a hollow cylindrical core and a pair of integral annular flanges respectively at opposite ends of the core, each of the flanges having grooves in its surface extending between inner and outer peripheries thereof and corresponding to like grooves in the opposite flange to form pairs of grooves, the core having a slot for each pair of grooves, each slot extending radially through the wall of the core and axially along the core between corresponding grooves but terminating a short distance from each of the flanges to leave continuums of breakable material respectively at opposite ends of the core whereby when the flanges are fractured by breaking along the grooves the lines of fracture propagate across the continuums of material to the corresponding slots in the core and the spool separates into at least two pieces for easy removal from the mandrel, the spool being formed of two identical molded portions each having a cylindrical core section, an annular flange at one end of the core section, and alternate fingers and grooves extending from the other end of the core section which interlock with corresponding grooves and fingers of the other molded portion when the molded portions are joined together to make the spool. Other info: Inventors: Terpak, Anthony (Key Biscayne, FL, US) Application Number: 498676 Filing Date: 1974-08-19 Publication_date: 1976-06-29 Assignee: Owens-Corning Fiberglas Corporation (Toledo, OH) Primary Class(es): 242/118.7 242/118.62 Other Classes: US Patent Ref:
Other Refs:
Primary Examiner: Christian, Leonard D. Assistant Examiner: Attorney: Overman; John W., Rose; Paul J. |
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