Buckle chute folder with clamp
US4701155A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1986 |
| Grant date | Oct 20, 1987 |
| Priority date | — |
| Expiry date | Jul 11, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H45/148
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A folder suitable for automatically folding successive sheets of paper, such as engineering drawings, by conveying them into a folder pocket to various distances depending upon where the fold is to be formed. To arrest the sheet at the proper position in the pocket, a photosensor senses when the leading edge of the sheet has reached a reference position in the pocket and, when the sheet has advanced further to the desired position, a solenoid-operated clamp is actuated to move transversely into the pocket and clamp the sheet momentarily in the desired position while the fold is being made. The amount by which the sheet advances beyond the reference position is controlled by producing an electrical pulse each time the sheet conveyor moves a predetermined amount, and counting these pulses to cause the clamp to be actuated when a count corresponding to the desired fold position has been accumulated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.