Belt driven weft thread suppliers
US5172735A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1991 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | Oct 4, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD03D47/38
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A weft thread selecting and supplying device has an electronically controllable electric motor (2) with a drive wheel (4) and a guide wheel (5), and a gear belt (6) which loops around these wheels. Thread suppliers (7, 7a) are connected to both longitudinal runs of the gear belt (6) and staggered relative to each other so that one thread supplier (7a) is in a ready position (B) and the other is in a transfer position (U). The thread suppliers (7, 7a) have thread eyes (9) through which the weft threads (17, 17a) run. In the ready position (B) the weft thread (14a) is outside of the take along range of a weft thread insertion gripper head (15). In the transfer position (U) the weft thread (17) is in a position to be gripped by the gripper head (15). The electric motor (2) rotates the drive wheel (4) in accordance with the pattern being woven and in synchronism with the weaving cycle, whereby the drive wheel (4) moves the gear belt (6). The positions of the thread suppliers (7, 7a) are thereby positively and repeatedly exchanged when the motor (2) is driven in one direction or in the opposite direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.