Barber Shops of 1930 through 1955. What was the cylinder lamp that was seen by customers to attract them?

The cylinder like lamp has a red white and blue color scheme scrolling through this clear cylinder. It may have been run by electricity.Barber Shops of 1930 through 1955. What was the cylinder lamp that was seen by customers to attract them?
Are you asking about a barber pole?





http://en.wikipedia.org/wiki/Barber%27s_鈥?/a>





(And by the way, if that's what you're asking about, they didn't stop using them in 1955. They're still in use today, as you can see just by looking at the storefront of any local barber shop!)Barber Shops of 1930 through 1955. What was the cylinder lamp that was seen by customers to attract them?
From what I heard they represented a surgeon worked there. I am not 100% on all the details but that's what I heard.
This web site will tell you all about the history of the striped barber pole.





http://www.barberpole.com/