Method and apparatus for piecing a reserve feed stock with a production feed stock
US4970855A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Dec 22, 2009 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H15/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The method and apparatus for supplying a reserve feed stock to a spinning machine or spinning position thereof, contemplates monitoring the operational state of a production feed stock and upon reaching a predeterminate operational state thereof, such as near depletion or depletion of the production feed stock, or even rupture thereof, bringing a reserve feed stock previously held in readiness into a production position where such reserve feed stock now assumes the role of a production feed stock. Consequently, downtime of the spinning machine or spinning position can be minimized and its operation at least partially automated since there is always available a reserve feed stock to allow for essentially continuous or continual production of a spun yarn or thread. One specific piecing technique uses a movable member for placement of a reserve feed stock into the travel path of a production feed stock such that piecing of these two feed stocks is reliably attained. Here the production feed stock may be separated by a clamping or cutting action or the terminal end thereof may be monitored so that the reserve feed stock can be pieced to a desired terminal end section of the production …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.