Dave McCallum sells a light bulb kit to help remove the bulb. Here is a link to it...scroll down almost to the bottom of the page:
http://www.featherweight221.com/fwrx...intenance.html
I highly recommend his book, "Featherweight 221 and I". It has just about any information that you need to know to take care of your FW, it's easy reading and the drawings are detailed and easy to see (as opposed to the pictures in the manuals).
ETA: Have you looked over the section on this forum for Antique and Vintage sewing machine addicts...ooops, I meant enthusiasts? You'll find lots of help from the people who hang out in there...
http://www.quiltingboard.com/vintage...thusiasts-f22/