Hyman "Harry" Hetchin and Jack Denny started selling their flashy lugged bikes in the early 1930's and as well as the swirly bits they also feature distinctive curved rear stays. These things really do look amazing, I'm gonna be rummaging in skips looking for one until I find one, no matter how long it takes!
Here are a bunch of their fixed gear bikes from the last 70 years or so:
Did that whet your appetite? If it did then head over to www.hetchins.org where you will find tons of photos of bikes from the 30's up to the present day as well as loads of information about their production methods. There are even some great old action photos dotted around the site like this:
Enjoy! :-)