1936 Distinctive Bicycles For Superior Performance And Safety on the Road
Distinctive Frame Design in both Ladies' and Gent's machines ensuring EXTREME RIGIDITY AND EASE OF PROPULSION.
Runwell Sports Tourist Bicycle. One of the numerous interesing new models for the 1936 Season incorporating the Runwell Registered Design Rigid Safety Frame, Oil [illeg.] and Three-speed Gear.
Also, I've found this 1923 advert that does not feature the distinctive frame style, so I'm guessing it was developed later. Unfortunately, all that tells me is that my bike was made sometime between 1923 and 1936, which I pretty much knew already.
Oh well, at least I certainly feel better knowing I'm in the hands of a Rigid Safety Frame. Phew.