Apparatus for controlling the rotational speed of the spindles of a spinning preparatory machine
US4375744A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1981 |
| Grant date | Mar 8, 1983 |
| Priority date | — |
| Expiry date | Apr 20, 2001 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H1/34
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention concerns an apparatus for controlling the rotational speed of the spindles of a spinning preparatory machine equipped with spindles and flyers. The proposed control arrangement comprises an infinitely variable variator, which is adapted or adjusted by using a control shaft which is rotatably indexed or stepped. The control or adjustment shaft is moved by a control motor which received its control or switching impulses from a motor control device comprising a programmable indicator or set value transmitter for the desired or set value and a correction element. According to a particularly advantageous design the correction element is of the form of a crossbar distributor arrangement. The apparatus is comfortable and easy to use by the operating personnel and permits, among other advantages, extremely accurate adaptation or adjustment of the spindle rotational speed. The adaption operations can be effected while the machine is running.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.