[19Fordy]

You can buy the old style safety hubs like Ken has here:
http://www.reds-vintage-parts.com/ou...-new-old-stock
and
http://www.reds-vintage-parts.com/ou...-new-old-stock
Or, if you have some 1/8 inch steel, a vise, a saw a drill and a welder you can make your own. If you decide to make your own notice how the top (1/4 in. thick) surface has a curved contour for clearance on a 15 in. rim. 16 in. wouldn't need the contour. Use thin plywood to make your protypes.