The company was apparently primarily a manufacturer of car accessories, producing among other things a tripod jack. The one I own is shown below (although I can't be sure it's a Vulcan as there are no identifying marks on it, and Vulcan wasn't the only manufacturer making these things). This is also from a time when cars actually had bumpers.
|Mechanix Illustrated, April 1951|
(Image above from Modern Mechanix, Yesterday's Tomorrow Today, an absolutely fantastic site that should be on everyone's bookmark list!)