I got out class early and decided to pick up some insulators I found along the old PRR freight line outside Marietta. I found five, 1937 Westinghouses, a pair of Lockes dated Sept 1937, and a PRR marked conductor shoe with the copper transmission line attached. The insulators also have railroad markings as well. Some of these are rusted together. Any idea on how to get these apart without damaging them?

Update: With a lot of Liquid Wrench and tapping with a hammer, I finally got these apart