Method of making a multitrack magnetic head employing double helix structure
AssigneeEastman Kodak Company
InventorsWilliam W. French, James U. Lemke, Richard J. McClure
Life of this patent
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Abstract
A multitrack magnetic head is made from an electrically conductive first helix formed on an iron wire that is, in turn, wound to form a second helix. By longitudinally cutting along one side of the second helix, the first helix is severed into respective coils on discrete gapped cores.
Claims13
A method for use in the making of a multitrack magnetic head, said method comprising the steps of:
- (a) longitudinally cutting one side of a double helix core-and-coil structure formed of a substantially helical coil of electrically conductive wire wound on and about a helix of magnetic material, thereby to form a row of discrete coil-wound gapped cores,
- (b) supporting said row of cores in a jig, and
- (c) removing parts of said jig to form first and second rows of electrical contacts for the coils on said cores,
- whereby electrical leads may be brought to said contacts to activate electrically said coils.
A process for use in making a multitrack magnetic head comprising the steps of:
- (a) winding an electrical wire substantially helically along and about a length of magnetic material,
- (b) forming said length of magnetic material with said electrical wire thereon into a substantially helical form thereof, and
- (c) cutting one side of said helical form of magnetic material so as to sever the helically wound electrical wire into discrete coils on discrete helically twisted sections of magnetic material,
- said discrete sections of magnetic material constituting the individual cores of said multitrack magnetic head.
A method of forming cores for use in magnetic heads comprising the step of cutting a coiled length of magnetic material along one side thereof, said magnetic material having an electrical wire wrapped generally along its length, thereby to sever the magnetic material into a plurality of discrete cores having respective coils thereon.
A method for use in forming a multitrack magnetic head comprising:
- (a) substantially helically winding electrical wire along a length of magnetic wire,
- (b) substantially helically winding the magnetic wire having the electrical wire thereon on an elongated mandrel,
- (c) placing the wire-supporting mandrel in a jig, and
- (d) cutting, in the direction of the longitudinal axis of said mandrel, the length of said magnetic wire while said wire is on said mandrel to sever the magnetic and electrical wire into a plurality of discrete coil-wound cores.
Dependencies are inferred from the claim text.