Good Morning Mr. Papa,
Your pictured kart is an early 1960 Putt Nik Leo. There were at least three variations of the Leo. The earliest one had a much smaller OD enclosed rear axle tube. Pretty soon, Cummings Enterprises, who built the karts in Washington, GA (West of Augusta) enlarged the rear tube so that it could be fabricated from a single piece of tubing. "Just chuck it in the lathe and bore out the bearing pockets." The final version of the Leo was refered to as the Super Leo and was longer and wider than your kart.
The greatest number of the surviving Putt Niks most recently rescued and restored have been located in the NE. I have 14 in my collection. Three have been restored, two Leo's, one small tube and one large tube and one 1961 Phantom. 1961 was the last year of offical kart production. The manufacturing facility went through several owners ending up under the banner of Brown Electric and Manufacturing and all kart manufacturing (unofficial) came to a hault in 1974. Troy Brown, the last builder and company owner retired in 1996, selling off most of his equipment and sending the jigs and fixtures for kart production to the scrap yard. (How was he to know we would be so interested in these today?).
Additionally Putt Nik manufactured a mini bike known as a "Skoot Nik" but I have never crossed paths with one. In late 1961 the factory also built a production run of approximately fifty golf carts under the name of.........you guessed it. It's claim to fame was it had a two stroke engine that could be cranked backwards for reversing and three wheels.
In 2012 I inherited the Putt Nik banner from Troy Brown. I have become the brand's self appointed historian, appreciation promoter, as well as chief rescue and restoration junkie.
Currently I have both a Super Leo and a 1961 Demon (the ultimate racing Putt Nik) in restoration in my basement.
John "Puttnikdude" McCorvey
Lilburn, GA