Sew length control and measuring apparatus
US4201145A · kind A · utility
5Cited by
5References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 19, 1978 |
| Grant date | May 6, 1980 |
| Priority date | — |
| Expiry date | May 19, 1998 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05D2305/34
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The lengths of at least a pair of limp workpieces fed through a work station are controlled by pressing each of the workpieces into engagement with a separate toothed wheel and by controlling the rotational velocity of one of the toothed wheels as a function of the rotational velocity of the other toothed wheel. In one preferred embodiment the contorl of the rotational velocities of the two wheels is accomplished by means of a differential gear and a motor which operates under the control of rates of feed sensors which monitor the rates of feed of the two workpieces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.