Apparatus for the bodily shifting of a printing roller
US4026404A · kind A · utility
Inventor
Key dates
| Filing date | Nov 13, 1975 |
| Grant date | May 31, 1977 |
| Priority date | — |
| Expiry date | Nov 13, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J25/08
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for the bodily shifting of a printing roller in parallelism with itself in which the roller has a first printing position and a second printing position and is mounted on connecting rods or levers which are actuated by eccentrics for movement of the printing roller between its first and second positions. A drive shaft is provided and the eccentrics are driveable by the drive shaft by a coil spring surrounding the drive shaft which can be tightened up on the shaft to cause the shaft to drive the spring or loosened on the shaft to cause the shaft to rotate within the spring. The spring has its opposite ends connected to discs and is tensioned in the tightening up direction and the discs are adapted to be stopped by a pawl arrangement which holds the discs with the spring in loosened up position and is movable to release the discs of the spring and will tighten up on the shaft and be driven thereby.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.