Assistance asked for locking stitches

[chrisash]

I have a bit of a problem with using my Singer 111G155 for reverse

 

When i start a line of sewing, I stitch 2 or 3 stitches and then slightly lifting the feet move the leather back to the position of the first stitch and continue sewing the line, same at the end of line so both ends have locking stitches

 

Trouble is sometimes it seems to screw up and i get a double pickup of the bobbin thread and jam's the machine by holding it down to the bobbin 

 

What am i doing wrong, sometimes it works well others it screws up, apart from that its perfect

[Wizcrafts]

You have to wait for the take-up lever to go all the way up and just start to move down before lifting the foot and pulling the work back..Also, change the check spring setting to give more slack thread.

[chrisash]

Thanks wiz, by adjusting the check spring do you mean moving it either left of right with that screw adjustment so you rotate the check spring unit

[Wizcrafts]

6 hours ago, chrisash said:

Thanks wiz, by adjusting the check spring do you mean moving it either left of right with that screw adjustment so you rotate the check spring unit

Yes. On most walking foot machines that have a round check spring assembly, rotating it clockwise gives more slack. I sometimes move mine to suit the job I'm doing, so I leave the little set screw slightly loose, loosen the knurled nut,  rotate the disks, then tighten down the nut.

You can fine tune the travel via the rotating bottom stopped bracket. The travel should always keep the thread taut until the needle enters the material. Then there is a bit of wiggle room for exactly how many degrees of take-up lever motion the spring moves down until it bottoms out. Playing with that adjustment can yield some interesting results. I find that the sooner it stops moving, the more slack thread you get. This can be a blessing or a curse, depending on the harness or softness of the material the needle is penetrating. Sometimes, holding the thread under spring tension a little longer makes for better stitches. Other times it can dissolve the loop before pickoff time.

[chrisash]

Thanks wiz I will experiment, but already hard over clockwise to the limit

Just thought as using knee lift maybe not full movement some times  causing the problem

 

Edited April 10, 2021 by chrisash