Abstract: A tape tab forming unit for tape roll holders wherein wear is minimized by distributing stress between a slotted cylindrical spring supporting upwardly extending struts on the one hand and a flexible forward strut on the other hand. The cylindrical spring may be formed as part of a tape roll holder or connected to such a holder. The slot in the spring defines forward and rearward spring edges from which the struts extend upwardly. The spring is strengthened by providing a thickened region between the forward and rearward edges. A tape tab is formed by combined rearward flexing of the forward strut and compression of the slotted spring.

Abstract: A tab-forming device for adhesive tape dispensers which provides for variable length tabs by incorporating a ratchet spool and pawl in a flexible spring for expanding the spacing between two attached diverging tab-forming struts. The device may be attached to existing tape roll dispensers or molded as an integral part with the dispenser.

Abstract: A tape dispenser with a tab forming device which includes a pair of upwardly extending forward and rearward struts joined at lower extremities within a cylindrical slotted spring which limits maximum separation of the struts. Upper extremities of the struts are terminated in two wings which, when brought together, cause a tape loop to be made, forming a tape tab. The rearward strut is adapted with a downwardly extending leg and foot for being secured within a tape roll holder, while the forwardly extending strut is adapted with an inverted hook over the wing at the upper extremity of the strut. The hook includes a forward serrated edge for tearing tape. The entire construction may be molded as a unitary article.

Abstract: A composite structure for magnetic recording includes a core member of polymeric material to which is bonded at least one silicon disk having a magnetic recording material on its outer surface. The silicon disk surface provides optimal flatness and smoothness characteristics for a magnetic recording substrate, while the polymeric core member provides strength to the structure.

Abstract: A composite structure for magnetic recording includes a core member of polymeric material to which is bonded at least one silicon disk having a magnetic recording material on its outer surface. The silicon disk surface provides optimal flatness and smoothness characteristics for a magnetic recording substrate, while the polymeric core member provides strength to the structure.