The first one is obviously a socket wrench, but what specifically was it made for? One side has 'DESMOINES USA' and the other side has 'DELAVAN' and 'Pat Pend.'
The second item may be simply a wire cutter but I'm not sure. It has the name 'GLASS PIEGEL' on one side.
The third looks like some sort of multi-wrench.
The forth looks like maybe a nail puller on one end but no idea what it was made for. I thought it may even be part of toy tool kit. Any thoughts?

I would appreciate any info any of you experts may be able to provide on these tools.

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.

No. 3 is an universal drain plug wrench. Don't know about No. 4 but would like to have one.

4 looks to me like a upholstery tool,  has a hammer head, tack small / nail puller,  the hook could be used to tighten a type spring. But the square head wrench, other slot?????

Thank you all for the replies. Do you know what type of equipment the drain plug wrench was used for?

Wrenches like that were common as a universal drain plug wrench and made by several different manufacturers. Yours is a nice model.

no.4 looks like a gasoline delivery truck wrench to take the cover off and turn the cap/plug off the underground tank fill pipe.  bob w.

I've had many drain plug wrenches , never saw that one. Very nice example.
Is there a name or number? They were used in service stations and garages ,
a lot of the older models had square drain plugs , both male and female type.

The last 2 responses make sense for items 3 and 4 since I got them from a guy who inherited a house (and all contents) from an old service station owner. The drain plug wrench is 9/16" thick with different sizes on both sides. There no markings on it. Thanks to all.