I'm going with No. 1 being a wrench for an oil burner nozzle, as that seems to be what the Delavan company in Des Moines makes. No. 2 is a wire cutter, I believe we just had one very much like it posted here a while ago. As for Nos. 2 & 3, not a clue. I'm looking forward to finding out from someone else what they are, especially No. 4.