Bram Hilton zips along through space at one million light years per second in his intergalactic bell jar. I assume he needs to go that fast because the bell jar is small with no refrigerator, microwave oven, wet bar or toilet, and he probably needs a lot of rest stops. What he's looking for with a “vibration-duplicator” guiding him are other Earths that are like our planet, just in different phases of time. He ends up in Troy and at the Lincoln assassination. Pretty good timing for taking vibration-duplicator potluck!
Murphy Anderson drew this story for Strange Adventures #10 (1951), and the writing is credited on the splash page to Manly Wade Wellman. Wellman wrote science fiction and fantasy for several decades, and I have read many of his stories and books. I don’t recall any of his prose fiction being as oddball as this comic book story, and I attribute that to editor Julius Schwartz handing him a plot to work from, and having Wellman do his best to make sense of it.