I purchased this pump even though I wasn't sure if was for an automobile. It was made by the Jos. Posch Mfg. St. Paul, Mn. Further research indicates he had patents on pumps for brewery use, although the only picture I could find was one in the Speed Museum. Anyone know anything more?
I see those pumps on a regular basis in antique shops around Minnesota.
I believe it is a beer keg pump.
Joseph Posch also manufactured keg spigots and the more familiar beer keg taps with the pump and spigot similar to what is still used today.
Ohhhh we could have soooooooo much fun with that at a frat party!
I'll bet you could adapt that pump to pressurize a fuel tank on a car.