A splicing head for an automatic zero-speed web splicing machine is disclosed in which the end of a new roll of web material can be prepared for splicing directly on resilient nip rollers which are used by the machine to perform the splicing operation. In particular, the splicing head includes a knife...http://www.google.es/patents/US4450039?utm_source=gb-gplus-sharePatente US4450039 - Web splicing apparatus