Go Back  Quiltingboard Forums >
  • Main
  • For Vintage & Antique Machine Enthusiasts
  • Thread jamming in Singer 15-91/15-125 (solved) >
  • Thread jamming in Singer 15-91/15-125 (solved)

  • Thread jamming in Singer 15-91/15-125 (solved)

    Old 09-18-2017, 03:48 PM
      #1  
    Member
    Thread Starter
     
    Join Date: Sep 2017
    Posts: 1
    Default Thread jamming in Singer 15-91/15-125 (solved)

    This is my first post here, and I just wanted to share how I've solved a problem with the thread jamming up on the bobbin case in a Singer 15-91 (actually, it's a 15-125, but the internal mechanics are identical). I don't have a sewing blog or any other outlet to post this, and since a lot of the information I got from the internet was on this board, I thought I'd post it here to share what I discovered, in case anyone else has a similar problem.


    I bought my lovely green 15-125 at a thrift store recently, and after a good oiling and greasing, it was running great. The only problem was that it didn't come with a bobbin case. I quickly discovered that the class 15 cases they sell at JoAnn Fabric are not compatible (they're almost identical, but the finger points in the opposite direction), so I ordered a replacement off of ebay.


    I loaded it up, and it sewed wonderfully - for about a few feet. It made a loud banging sound, and the needle thread was tangled up underneath the fabric. This appeared to be a case of thread nesting, so with a little research, I found Tammi @ ArchaicArcane's excellent posts about thread tensions and sussing out the cause of thread nesting:
    https://archaicarcane.com/fly-little...d-nests-part-1


    This was incredibly helpful, but none of the 7 reasons she mentioned seemed to be the cause.


    Then I found Ed Lamoureux's blog post shuttle cushion spring, which if it's too close, can lead to jamming and tension issues.
    http://sewing-machines.blogspot.com/...ger-15-75.html


    But alas, there appeared to be plenty of space for the thread to slip through.


    I was about to throw in the towel and give up on the machine, but then I found a post on the blog Rittles and Bittles that described the thread jamming on a 15-91 whenever a newer bobbin case was used. They even posted a picture comparing the two:
    http://rittlesandbittles.blogspot.co...se-issues.html


    Maybe this was it! I looked for original 15-91 bobbin cases on ebay, and while they were much less expensive than the featherweight bobbin cases, they were still more than I'd payed for the sewing machine (which to be fair, was only $20).


    Before I ordered one, I looked again at the photo comparing the new and old cases. The curved part of the bobbin case's latch (singer part #125288) stuck out more on the new one. I slowly sewed a test strip, trying to get it to jam, and at the first hint of the machine struggling, I looked underneath and saw the thread neatly caught by that exact part of the latch!

    [ATTACH=CONFIG]580822[/ATTACH]


    I took the bobbin case apart and tried bending the curved little "finger" down. It was difficult (the metal is thick), and I wasn't sure if I'd made any difference, but when I put it back together & tried it again - no jams! It's been running steady for two days with no problems whatsever.


    Here is the bobbin case before I bent it:
    [ATTACH=CONFIG]580823[/ATTACH]

    And here it is after:
    [ATTACH=CONFIG]580824[/ATTACH]

    It's a pretty subtle difference - before I could just barely slide a piece of paper under that curved "finger", and afterwards I cannot.

    Obviously, this is only helpful if you have a slightly misshapen newer bobbin case like I did, but I bought two of them off of eBay (long story), and they both had the same problem. I hope this helps someone out there who, like me, was at their wit's end with the thread tangling and jamming.
    Attached Thumbnails jammed.jpg   before.jpg   after.jpg  
    nateborofsky is offline  
    Old 09-18-2017, 05:07 PM
      #2  
    Super Member
     
    Join Date: Jan 2007
    Location: near Richmond ,Virginia
    Posts: 1,315
    Default

    Loved this ....im learning things as I read them..then pass on to others if needed..thank you
    topper1 is offline  
    Old 09-18-2017, 05:23 PM
      #3  
    Super Member
     
    OurWorkbench's Avatar
     
    Join Date: Mar 2015
    Location: Denver, CO
    Posts: 4,300
    Default

    Welcome nateborofsky. Thank you for posting here and sharing what you discovered about a possible cause and solution. I know how hard it is to find information, sometimes.

    Janey - Neat people never make the exciting discoveries I do.
    OurWorkbench is online now  
    Old 09-18-2017, 06:18 PM
      #4  
    Super Member
     
    Join Date: Mar 2011
    Location: Central NJ
    Posts: 5,571
    Default

    Welcome and thanks for an incredibly detailed description of both problem and solution! Glad you got the machine up and running. Enjoy.
    NJ Quilter is offline  
    Old 09-18-2017, 06:35 PM
      #5  
    Banned
     
    Join Date: Aug 2014
    Location: Victorian Sweatshop Forum
    Posts: 4,096
    Default

    Great detective work. This is why I will always go with vintage fiddly bits and parts when I can.

    Cari
    Cari-in-Oly is offline  
    Old 09-18-2017, 11:44 PM
      #6  
    Super Member
     
    NZquilter's Avatar
     
    Join Date: Aug 2016
    Location: Kansas
    Posts: 4,444
    Default

    Thanks so much for sharing! I have a 15-91 and it needs a new bobbin case too. I just ordered one from Sew-Classic LLC. I think it should work, but if it doesn't, I now know what to look for. Thanks!

    And welcome to the board!
    NZquilter is offline  
    Old 09-19-2017, 02:21 AM
      #7  
    Super Member
     
    Battle Axe's Avatar
     
    Join Date: Apr 2010
    Location: Northeastern Indiana
    Posts: 2,800
    Default

    Thanks so much for sharing. All very useful information. Amazing how lots of these come without the bobbin case.

    Marcia
    Battle Axe is offline  
    Old 09-19-2017, 02:49 AM
      #8  
    Super Member
     
    Join Date: Mar 2011
    Location: Maryland
    Posts: 2,597
    Default

    Thanks for sharing. I like problem solved stories!
    QuiltMom2 is offline  
    Old 09-19-2017, 02:53 AM
      #9  
    Super Member
     
    Join Date: Nov 2011
    Location: Southern Minnesota
    Posts: 4,362
    Default

    Your detective work paid off. Thank you for the wonderful explanation and photos.
    liking quilting is offline  
    Old 09-19-2017, 05:20 AM
      #10  
    Power Poster
     
    Join Date: Jan 2011
    Location: Southern USA
    Posts: 16,163
    Default

    I took a Featherweight maintenance class from Nova Montgomery and she went in detail about that happening and why with bobbin cases. Her class was amazing. I learned enough to feel confident about troubleshooting to find the problem with any vintage machine. It's a full 8 hour hands on class.
    Onebyone is offline  
    Related Topics
    Thread
    Thread Starter
    Forum
    Replies
    Last Post
    lots2do
    Main
    9
    02-09-2013 09:55 AM
    DogHouseMom
    Main
    9
    01-20-2012 09:28 PM
    lvaughan
    Main
    2
    02-11-2011 07:22 AM
    chamby
    Main
    3
    09-26-2007 12:00 PM
    chamby
    Main
    14
    09-24-2007 04:43 AM

    Posting Rules
    You may not post new threads
    You may not post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off
    Trackbacks are Off
    Pingbacks are Off
    Refbacks are Off


    FREE Quilting Newsletter