| 摘要 |
<p>1531192 Sewing-machines SINGER CO 19 Jan 1977 [26 March 1976] 02128/77 Heading DIG Electronic control of functional components, e.g. needle swing mechanism and feed regulator, of a sewing machine is accomplished by a control package 40 comprising a circuit board and an outer panel which package is detachably mounted, e.g. in an opening, on the frame of the machine and is releasably interconnected electrically with said components whereby the package may be interchanged with other control packages thus allowing to vary the complexity of a basic machine.</p> |
