UPDATE: See more information on the Rapport, Flox Foy, and Welliver adapters here.
I’ve spent the past couple days working through the selective hub relationships between Free-Lock (Denver, CO), Dualmatic (Longmont, CO), Husky (Longmont, CO), White Manufacturing (Colorado Springs, CO), and Cutlas Tools & MFG (Vinton, IA). During that process, I ran across more information about dual wheel adapters for the jeep. I thought it might be worth listing the one’s that have been documented. Perhaps someone has more information??
1. Max Rappaport’s hubs: A patent on these hubs was filed in 1947 (awarded in 1953), making them the earliest known hubs. Max Rapportaport was the President of Northwestern Auto Parts Company (aka NAPCO).
![dually_pattent_rappaport](http://www.ewillys.com/wp-content/uploads2/2010/05/dually_pattent_rappaport.jpg)
Here is an example of them:
![dually_adapter1](http://www.ewillys.com/wp-content/uploads2/2010/05/dually_adapter1.jpg)
This December 1947 NAPCO ad promoted the hubs:
![1947-12-popular-science-dual-wheels-dually](http://www.ewillys.com/wp-content/uploads2/2017/04/1947-12-popular-science-dual-wheels-dually-650x228.jpg)
This July 1948 Popular Mechanics ad might be advertising the same dual wheels, but rebranded as “Du All” Converters. The design looks very similar to the Rapport models:
![1948-07-popular-mechanics-du-all-dual-wheel-adapters-ad](http://www.ewillys.com/wp-content/uploads2/2017/04/1948-07-popular-mechanics-du-all-dual-wheel-adapters-ad-650x267.jpg)
2. Welliver Jeep Dual Adapters No. 3000: These adapters were available by 1949 and sold by the Welliver Machine Shop. This April 1949 ad from Popular Mechanics provides a documented date.
![dually_popular_mechanics_article_1945](http://www.ewillys.com/wp-content/uploads2/2012/02/dually_popular_mechanics_article_1945.png)
Thanks to Stefano Oddo, we have this brochure regarding these adapters:
![jeep-dual-adaptors-no-3000-welliver](http://www.ewillys.com/wp-content/uploads2/2017/04/jeep-dual-adaptors-no-3000-welliver-511x650.jpg)
3. Hickey Dual Adapters: Vic Hickey developed his higher compression head, giving jeeps a power upgrade option. Then, he designed a set of dual wheel adapters. The first documentation I could find on his adapters was this July 1952 article in Popular Science about his hubs.
The next month, this ad appeared in the August 1952 issue of Popular Science:
![1952-08-popular-science-hickey-dual-dually-adapters](http://www.ewillys.com/wp-content/uploads2/2017/04/1952-08-popular-science-hickey-dual-dually-adapters-460x650.jpg)
This Photobucket page has some good close up photos of the Hickey adapters. Continue reading →