Number 1 is the inside half of a piping foot, I think. I don't know what number 2 is, number 3 I thought was a binding or edging attachment which would attach to the bed of the machine. You would then feed the edge of the fabric you are sewing into this attachment and the attachment would fold it over as it is sewed. This would normally be used for the edges of things like boat covers. Now I'm not sure what it is either. Number 4 is the outside half of a topstitch foot. The rotating guard sits next to fabric that is doubled over, and keeps the foot at the proper distance to topstitch the piece of folded fabric the same distance from the outside edge of the fabric.
No one lives forever, the trick is creating something that will.