Years ago when I was around 13 my next door neighbor (who was 14) called crying & yelling for me to come to her house. Her parents were a work & she was the only one home. So, I ran as fast as I could. There she sat at their sewing machine with the needle through her index finger. I didn't sew back then or know anything about sewing machines, but it was an older black model. I bet it was some sort of Singer. Anyway, I told her to turn the wheel, but she refused and continued to scream. She wanted me to call an ambulance...ha. While talking with her and without telling her that I was going to do it I reached down & gave the wheel half a turn. She was free, but had a sore finger for several days. I hope your finger heals quickly.