Winding core for magnetic tape adapted for stacking

Winding – tensioning – or guiding – Coil holder or support – Spool or core

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Details

206394, 206509, B65H 7518

Patent

active

043413579

ABSTRACT:
A flangeless winding core for magnetic tape, adapted for stacking between like winding cores, has an annular body with parallel top and bottom annular surfaces, an outer circumferential surface around which the tape is wound, and an inner circumferential surface from which a plurality of angularly spaced lugs extend radially inward, the inner ends of which are curved to define a discontinuous inner circumferential core surface. The lugs have the shape of a sector of an annulus, are spaced from each other by a like number of similarly shaped gaps, and project equally above the top and bottom surfaces of the annular body a distance greater than one-half the axial dimension of the annular body. The top and bottom surfaces of the lugs are parallel to each other and slope relative to the median plane of the annular body, thereby to maximize the effective axial length of the discontinuous inner circumferential core surfce while permitting stacking of the annular body surfaces against one another, with the lugs mating with the gaps of a nesting core, and enables tape having a width approximately the same as the axial dimension of the outer circumferential surface to support the tape wound about an adjacent core when the cores are stacked.

REFERENCES:
patent: 4069914 (1978-01-01), Damsky
patent: 4081151 (1978-03-01), Ender
patent: 4201353 (1980-05-01), Schor
patent: 4280670 (1981-07-01), Schor

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