geezer Report post Posted April 28, 2018 I have an opportunity of purchase an old Singer 31-15 which the seller said it was a walking foot machine. ( It is a 160 mile trip when I take a look at this machine) Did Singer make this machine with a walking foot?? I can't find any information to verify this. AND what kind of grease is used for the gear case? Any help is appreciated. Quote Share this post Link to post Share on other sites
ljk Report post Posted April 28, 2018 Hello The 31-19 was a walking foot. A fellow I knew had a leather factory and used them to sew thin western jackets and vests. He kept parts and said he could repair and service them in minutes. Quote Share this post Link to post Share on other sites
kgg Report post Posted April 28, 2018 Hi geezer, My understanding of the singer 31-15 is that it was made as a industrial straight stitch not a walking foot sewing machine made more for tailors able to due light to medium weight fabrics. I would ask the owner to describe the movement of the foot and bottom feed dog as the needle goes up and down (straight stitch foot moves straight up and down with the feed dogs moving the material from front to back where as a walking foot lifts off the material at the rear of the feed dog cycle, moves forward and drops down on the material ). My 2 cents kgg Quote Share this post Link to post Share on other sites
leathersmyth Report post Posted April 28, 2018 31-15 is not a walking foot machine, Great machine for sewing light weight materials. But won't sew heavy .. So depends what you are sewing. Quote Share this post Link to post Share on other sites
ljk Report post Posted April 28, 2018 I made the comment about the (31-19) because there may have been a possible miscommunication between the seller and buyer about the number. I have the short version I use for vamps. I also lengthen the stitches on most of the 33 and 44 series machine I have owned. The 31-15 was the go to machine for upholstery when I started the 111w machines where very expensive. I knew a girl on the bike circuit who used a 31-15 and not just a patch sewer, she could put a zipper in a heavy leather. She was a very accomplished stitcher. Good old machine. Quote Share this post Link to post Share on other sites