Controllable output brake, thread feed device as well as projectile or gripper weaving machine
US5778943A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1996 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Jul 25, 2016 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD03D47/365
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A controllable output brake for a thread feed device includes actuating elements that are connected to a control member and are used for effecting a controlled displacement of a thread brake element. The controlled displacement is an axial play with which a supporting ring for the thread brake element is supported in a holding member. The controlled displacement is used for controlling the tension of a thread. In the case of such a thread feed device, a push drive connected to the holding member is provided for each direction of movement in which the thread brake element is adjusted. The push drive for at least one direction of movement is a pneumatic push drive connected to a pneumatic drive control unit. In a projectile weaving machine, the controlled output brake is disengaged and re-engaged approximately in synchronism with a controlled thread brake which is provided as well. The engagement is preferably carried out in advance of the engagement of the controlled thread brake. In a gripper weaving machine, the controlled output brake is disengaged and re-engaged several times during each picking operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.