Abstract: A solar cell powered detecting and indicating system applicable to mechanically controlled sewing machines without D.C. power supplies connected to regular A.C. house mains, and detecting and indicating circuits minimizing power consumption for compatability with solar generated power supply.

Abstract: A presser foot and throat plate construction is disclosed for minimizing work feed drift in a sewing machine having a four-motion drop feed mechanism. By providing aligned and complemental ribs and recesses, one beneath the presser foot and the other in the throat plate, turning movement of the work fabric, which contributes to feed drift, is minimized and stitch forming characteristics of the sewing machine are enhanced.

Abstract: Flexible tubing for use in connecting a pneumatic foot controller to a sewing machine is provided at one end with a detachable plastic connector including a tight fitting tube supporting sleeve and a serrated end fitting which is locked in place in the tubing with the sleeve.

Abstract: An electronically controlled multiple pattern sewing machine is provided with a pattern selection and informational display arrangement which includes a sliding card having thereon stitch pattern and associated informational indicia. A mask covers the card, which may be moved by an operator to make visible only a selected group of pattern indicia and associated informational indicia. A pattern from this visible group may then be selected by an operator.

Abstract: A hollow bushing (22 or 54) that guides a presser bar (21) to move in a longitudinal direction is threaded at one end (29 and 30). The outer surface of that end is round and, below the thread (59), fits closely but rotatably in a channel (32) in the head (16) of a sewing machine. The bushing is not fixedly held in place in the channel (32). Instead, a tension spring (33) screwed onto the threaded end and onto a threaded member (37) attached to the end of the presser bar (21) within the head (16) pulls the presser bar downwardly so that its foot (24) normally presses against the work (46) and simultaneously pulls the bushing (22 or 54) toward the head (16). A shoulder surface (27 or 58) at a certain location on the bushing (22 or 54) acts as a stop to limit the extent that the cylinder can be drawn into the head.