Weft yarn store for looms having a braking device
US4785855A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 1987 |
| Grant date | Nov 22, 1988 |
| Priority date | — |
| Expiry date | May 8, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A weft yarn store for looms has a stationary drum (10) for storing a weft yarn supply (23) and a braking device (13) at the end of the drum. A resiliently deformable brake element (132) is movable by means of an adjusting device (131) relatively to a braking surface of the drum. The adjusting device may be an annular electromagnet 131 and is in direct operative engagement with low-inertia parts of the brake element 132. Such parts can be finger-like lamellae disposed one beside another on the outer drum periphery (10). The action of the braking device can therefore be accurately adjusted to the departing weft yarn so that the same is retarded gently at the end of picking into a loom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.