Method and dobby for synchronizing all heddle frames of a weaving machine
US4417604A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1981 |
| Grant date | Nov 29, 1983 |
| Priority date | — |
| Expiry date | Aug 11, 2001 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD03C1/142
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for synchronizing all heddle frames of a weaving machine which are operated by a punched-card-controlled dobby. The pattern card cylinder or the reading needles are moved to positions in which during a read, all the reading needles simultaneously engage the pattern card webs between the control points or the holes of the pattern card. Through this, the heddle frames are moved to the lower shed position by further operation of the dobby. In a preferred embodiment, the card cylinder is stopped in the center of the indexing movement effected by the driving projection of the drive shaft. The driving projection is laterally uncoupled from a ratchet gear by a hand lever and, simultaneously, further movement of the ratchet gear is prevented by the engagement of a locking member in a tooth space of the ratchet gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.