Apparatus for wrapping strings for musical instruments
US4055038A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1976 |
| Grant date | Oct 25, 1977 |
| Priority date | — |
| Expiry date | Mar 1, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10D3/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An apparatus for wrapping strings for musical instruments in which the various parameters influencing the quality of the string are accurately controlled, the apparatus comprising an elongated track mounting an opposing pair of heads having rotatable shafts to which the opposite ends of a core wire are fastened, the shafts being rotated in unison by a pair of electronically controlled stepping motors, means being provided to tension the core wire between the heads, the wrapping wire being fed into contact with the core wire by a vertically disposed feed arm suspended from an overhead carriage traveling lengthwise of the track member, the wrapping wire being fed to the feed arm from a source of supply and, as an incident of such feeding, a predetermined tension is applied to the wrapping wire, the feed arm including means for controlling the rate at which the feed arm advances and means for controlling the angle between the wrapping wire and the core wire, the track member also mounting adjustable anvils for forming flats at the opposite ends of the portion of the core wire being wrapped, together with indicia for accurately positioning the operating components of the apparatus rela…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.