Device for shedding warp yarns in a weaving loom
US4337801A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1980 |
| Grant date | Jul 6, 1982 |
| Priority date | — |
| Expiry date | Jul 23, 2000 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD03C5/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A device for shedding warp yarns in a weaving loom, such as a jet loom, comprises: cranks supported on machine frames of the loom rotatable in synchronization with the weaving operation of the loom; synchronizing levers swingably pivoted; connecting rods connecting the cranks with synchronizing levers so that the rotational movement of the cranks is transmitted as a swinging motion of the synchronizing levers; synchronizing links linked with the synchronizing levers; rocking levers linked with the synchronizing links so that the rotational movement of the cranks is transmitted as a swinging motion of the rocking levers through the swinging motion of the synchronizing levers; and heddle frames, for the upper and lower warp yarns, operated by the rocking levers. The synchronizing levers and synchronizing links are so arranged that, when the connecting rods are located at their dead points which correspond to the uppermost or lowermost position of the heddle frame, one of linking pivots linking synchronizing levers with the synchronizing links is near a line formed by the synchronizing levers and links when they are at their dead points. As a result, the time period wherein the warp y…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.