Precise intermittent feeding apparatus for edgewise perforated carrier sheet material
US4549680A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1984 |
| Grant date | Oct 29, 1985 |
| Priority date | — |
| Expiry date | Dec 3, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H20/22
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Disclosed is economical and reliable apparatus for precisely intermittently feeding prescribed finite-lengths of edgewise perforated carrier sheet material. The intermittent feeding apparatus basically requires a rotatable drum having its cylindrical surface provided with circularly arrayed radially extending prongs that are removably engageable through the carrier edgewise perforations and which drum is intermittently rotated for a prescribed angular-value cycle so that the drum prongs feed the carrier for an approximate-length roughly equivalent to the desired exact finite-length. At the conclusion of each incremental rotation for the pronged drum, a camming assembly (having a camming first-component circularly arrayed around the drum and having a camming second-component mounted to a reciprocatable piston) rectifies the approximate-length carrier feed into the exact finite-length feed desired for the carrier sheet material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.