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Publication numberUS210172 A
Publication typeGrant
Publication dateNov 19, 1878
Filing dateNov 3, 1877
Publication numberUS 210172 A, US 210172A, US-A-210172, US210172 A, US210172A
InventorsBdwilf J. Watson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Improvement in piano-forte strings
US 210172 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

E. J. WATSON & P. BAUER. Pianoforte-Strings.

No. 210,172. Patented-Nov.19,1878.

Int enters,



Specification forming part of Letters Patent No. 210,172, dated November 19, 1878 3 application filed November 3, 1877.

To all when: it may concern:

Be it known that we, EDWIN J. .VATSON and PAU L BAUER, of \Vorcester, in the county of \Voreester and State of Massachusctts,have invented a new and valuable Improvement in Piano-Forte Strings and we do hereby declare that the following is a full, clear, and exact description of the construct-ion and operation of the same, reference being had to the annexed drawings, making a partof this specification, and to the letters and figures of reference marked thereon.

Figures 11., 2, am 3 are transverse sectional views of our pianot'orte string.

()ur invention relates to piano-forte strings which are covered or wound with wire; and it consists in making the steel wire or core for said strings oval, triangular, quadrangular, or polygonal (except round and round and fiattened) in cross-section, for the purpose of holdin g the covering-wire iirm and compact at every turn around said steel wire, as will be hereinafter more fully set forth.

The annexeddrawings, to which reference is made, 'l'ully illustrate our invention.

A represents the steel wire or core of the string, and B is the covering-wire wound or wrapped around the same.

Ordinarily the practice has been to hammer a small space tlat on the steel wire to be covered at each end where the covering was to be attached, thus leaving nearly the whole of the covering dependent on the ends for support, and causin a recoil and loosening of the covering after it is wound, and making in many cases the strings entirely useless on account of their making a false jarring tone.

To obviate this difliculty we make the steel wire or core A oval, triangular, quadrangular, or polygonal (exeeptin g round and round and flattened) in cross-section for its entire length. This may be done by flattening one or more sides, as shown in Figs. 1 and 2, or by giving it an oval shape on one or more sides, as shown in Fig. 3, or in any other way making it of other form than round and round and fiattened in cross-section, so that the coveringwire B will be set and fastened at each and every turn upon the steel. core.

The covering-wire B is wound around the steel string or core A in a uniform and close manner, and by the novel shape of said core the covering-wire becomes securely fastened at every turn, thereby preventing any recoil from taking place in said covering while being wound, or when finished, or when in use.

\Ve are aware that a suggestion has been made of a .iiat string which may be wound. \Ve therefore disclaim the invention thereof. It is obvious, however, that a string perfectly fiat on both sides, unless it be provided with an unusual amount of metal to serve as body, is poorly adapted for windin hat we claim as new, and desire to secure by Letters Patent, is

As a new article of manufacture, a pianostring composed of a core oval, triangular, quadrilateral, or polygonal (except round and round and flattened) in cross-section througlr out its entire length, and a wrapping of coiled wire, substantially as and for the purpose set forth.

In testimony that we claim the above we have hereunto subscribed our names in the presence of two witnesses.


A. S. WArsoN, F. H. ALLEN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3411347 *Oct 20, 1965Nov 19, 1968Wirth Gallo & CoVibrating string for measuring purposes
US5817960 *May 27, 1997Oct 6, 1998Inventronics, Inc.Wound strings for musical instruments characterized by reduced inharmonicity and method for making the same
US5892166 *May 23, 1997Apr 6, 1999Inventronics, Inc.Wound strings for musical instrument
US5984226 *Apr 21, 1998Nov 16, 1999Inventronics, Inc.Method for making wound strings for musical instruments characterized by reduced inharmonicity
US6274240 *Sep 17, 1998Aug 14, 2001Alconex Specialty Products, Inc.Electrically insulated magnet wire and method of making the same
Cooperative ClassificationG10D3/10