Iver Johnson set the pace with their 1901 patent for the ‘truss bridge’ frame, and other manufacturers designed their own frame style variations in response. In 1915, when Iver Johsnon’s patent lapsed, a number of American cycle manufacturers introduced their own truss bridge bicycles, though they descibed them as an ‘arch bar’.
1915 Miami Hudson Arch bar
Kelly adjustable handlebars
Miami Cycle & Mfg Co was the maker of two top brandes, the Racycle and the Flying Merkel. This bicycle, with glorious unrestored paintwork, features a similar colour scheme to the Merkel.