Hemmer-seamer
US4292908A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1978 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Oct 2, 1998 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05D2207/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for independently guiding two overlaid fabric workpieces as they are simultaneously fed through a sewing work station and are seamed together, wherein the guide apparatus comprises a pair of opposed guide wheels located upstream from the work station with respect to the direction of workpiece feed through the work station; separate servo motors for rotating guide wheels in planes perpendicular to the direction of workpiece feed; a separating bar for spacing apart the two workpieces and for individually pressing them against a different one of the guide wheels; and separate sensors for monitoring the edges of each workpiece and for controlling the servo motors separately to rotate their guide wheels so as to center each workpiece edge opposite its corresponding sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.