Final positioning vibration damping device for type disc typewriters
US4313682A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 4, 1980 |
| Grant date | Feb 2, 1982 |
| Priority date | — |
| Expiry date | Sep 4, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J1/24
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a device for use in type disc typewriters or similar machines having types carried by spokes radially extending from a common hub which is rotated to position a selected spoke at a print position. The device is operative to lock the type disc at the selected position and to restrain vibration of spokes adjacent to the spoke at the printing position. To this end there is provided a lever which acts against the hammer side of the type disc shortly before the printing of the selected type to displace the selected type spoke and interpose itself between adjacent type spokes to either side of the selected type spoke to preclude axial as well as circumferential vibration of the type disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.