Heddle frame actuating mechanism located between a dobby and the heddle frames of a weaving machine
US4379474A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1980 |
| Grant date | Apr 12, 1983 |
| Priority date | — |
| Expiry date | Oct 16, 2000 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD03C1/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In an attempt to form a compact arrangement of a control unit for a weaving machine, according to U.S. Pat. No. 3,759,298, undesired distortions result in the sequence of movement of the heddle frame due to the installation of a short connecting rod. To prevent this, the heddle frame actuating mechanism has one double arm lever pivotally supported on an arm of a further double arm lever, a connecting rod hingedly connected at its one end to a still further double arm lever. The arm of the further double arm lever and the arm of the one double arm lever are in alignment rectilinearly in the center-shed position and are together equal in length to the length of a first arm of the still further double arm lever, so that these two arms, the connecting rod and a connecting line extending between the fixedly arranged pivot axles for the further double arm lever and the still further double arm lever form a parallelogram.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.