Apparatus for notching of webs
US4115000A · kind A · utility
6Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1977 |
| Grant date | Sep 19, 1978 |
| Priority date | — |
| Expiry date | May 2, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/9391
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for notching an edge of a strip of photographic film has an arrangement for advancing the strip in a path. Laterally adjacent the path is located a wheel which rotates intermittently or continuously and which is provided with one (or several circumferentially spaced) punching die(s) provided adjacent the periphery of the wheel. A counter-punch is provided with which the die(s) cooperate(s) so as to notch a longitudinal edge of the strip when the wheel rotates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.