초록 ▼

A wooden spool held together with a novel tie rod assembly and a method of assembly the spool between a pair of dies. The novel tie rod assembly includes elongate tie rods having a bent end or otherwise deformed first end and a plurality of grooveless retaining rings. The tie rods are inserted throu

A wooden spool held together with a novel tie rod assembly and a method of assembly the spool between a pair of dies. The novel tie rod assembly includes elongate tie rods having a bent end or otherwise deformed first end and a plurality of grooveless retaining rings. The tie rods are inserted through the end flanges and the transverse barrel of the of the spool. The retaining rings are pressed axially on the smooth second ends of the tie rods which project axially from one of the flanges. The spool can be assembled between a pair of dies. The base die includes locating recesses to receive the bent ends of the tie rods and the top die includes engaging pins for pressing the retaining rings on the opposite ends of the spool.

대표청구항 ▼

1. A spool comprising:first and second flanges in spaced relationship, each flange having a plurality of holes, a central arbor opening and a circular receiving groove, the holes of the first flange axially aligned with the holes of the second flange, the receiving groove of the first flange in diam

1. A spool comprising:first and second flanges in spaced relationship, each flange having a plurality of holes, a central arbor opening and a circular receiving groove, the holes of the first flange axially aligned with the holes of the second flange, the receiving groove of the first flange in diametric opposition with the receiving groove of the second flange, the holes being arranged radially about the central opening between the receiving groove and the central opening; a plurality of rods, one for each set of axially aligned holes, each rod extending through one set of holes in the flanges, each rod having an enlarged first end sized greater than its corresponding hole in the first flange, and a non-threaded second end projecting from the second flange; a cylindrical barrel transversely between the flanges, the ends of the cylindrical barrel being received in the receiving grooves of the respective flanges; a plurality of retaining rings, one retaining ring axially pressed on the second end of each rod, each retaining ring including an inner peripheral edge engaging the rod and a larger diameter outer peripheral edge axially offset from the inner peripheral edge, the retaining ring having a body with a curved cross section between the inner and outer peripheral edges; and wherein the second ends of the rods project axially beyond the entire body of the retaining rings such that the second ends are not substantially flush with an outside face of the second flange and are not contained within the body of the retaining rings.