Stitch length range indicating arrangement in a multiple pattern sewing machine
US4342271A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 1981 |
| Grant date | Aug 3, 1982 |
| Priority date | — |
| Expiry date | Aug 13, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/23215
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An arrangement for indicating to an operator whether a selected stitch length is within, below or above a preferred range for a selected pattern in a multiple pattern sewing machine includes a slide contact board and a group of slide contacts connected to a stitch length selection lever. The different patterns are grouped in accordance with preferred stitch length ranges, each group having associated therewith one of the slide contacts on the lever. The slide contact board is arranged to define the preferred ranges so that for each of the pattern groups, a circuit is completed to energize a low LED if the selected stitch length is below the preferred range; to energize an in-range LED if the selected stitch length is within the preferred range; and to energize the high LED if the selected stitch length is above the preferred range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.