My Nina 150 sewing machine fails to catch the cotton from the bobbin casing

SOURCE: Bobbin Case

I'm having a similar problem today. I took out the bobbin case and when I went to put it back in, the whole system locks up. I've tired cleaning, changing needle taking the metal plate and piece that holds bobbin case out and put it all back in after cleaning. Nothing. My symptom is I can't get a complete stitch, the needle goes down, the whole deal acts like it will work and as soon as the arm of the bobbin case gets to 8 o' clock on the gears, It jams and won't hardly move. I cannot pull the bobbin case out easily after this. Perhaps there is someone out there that can help us!

SOURCE: Bobbin Case will not snap into housing

Insert the bobbin case without a bobbin to see if it will go all the way into the locked position. If it does,the bobbin case and basket are okay.
Check inside the bobbin basket(where the bobbin goes) and see if there is thread or lint wrapped around the spindle the bobbin case sits on. If there is, remove it. If there isn't ,then the bobbin is probably sprung and needs to be replaced.
sewman7

SOURCE: Bobbin Case

ok Sim this is a bit tricky but not to tricky first turn the handwheel toward you until the hook is at one o clock postion then slide the case without the bobbin in into the hook area you may have to work the handwheel back and forth alittle but it should slide in just remember that the case should ride in the rim. also take the needle out first that way you wont get stuck trust me it happiens.

SOURCE: JcPenney 7064 , bobbin case, bobbin and manual ??

i was able to find it at www.ifixmachines.com

SOURCE: Singer Sewing Machine model 9224. Bobbin thread

If you turn the handwheel, can you see a metal ring rotating around the outer edge of the bobbin case? If not rotating, broken gear or timing belt off.
If that ring is turning, remove the needle plate and bobbin case. As this ring now rotates, you will a finger on the ring that will pass behind the needle from right to left and it should catch the thread from the eye of the needle. If this finger, the "hook" passes above the eye, you have a timing problem.

Let me know.