| 摘要 |
<p>1463410 Sewing machine with electronic memory SINGER CO 24 May 1974 [5 July 1973] 23257/74 Heading DIG In a sewing machine the bight, of the zigzag is controlled by an electronic memory which holds the pattern and instructs coils 40-44 to change the bight after each stitch in response to an input derived from a pulse generator 90 which generates one pulse each stitch. The pulses index forward a binary counter 91 (Fig. 2) which sends a binary code to the memory 92; this in turn energises selected coils 40-41 according to the pattern required. The coils move a whippletree linkage 39 (Fig. 1) connected to a driver shaft 35 which shifts a drive link 30 to jog the needle sideways. The work feeding mechanism may be connected via a link 63 and another whippletree linkage (not shown) to a second set of coils 70-74 so that the memory can control the feed also. In this case the output from the memory 92 will be held on a latch until the pulse generator indicates the appropriate point in the sewing cycle; at this point the coils are permitted to move the feed control.</p> |
