Thanks to Chris for publishing this information on a Facebook post … It appears I will be buying from him a set of model F-28 Free-Lock hubs sold by Dualmatic. These NOS Free-Lock hubs included documentation stating that by December of 1973 Free-Lock had become a “Quality Division” of Dualmatic Products Company.

So, I believe this confirms that Free-Lock was acquired by Dualmatic, so now the questions are 1) when did this happen and 2) why didn’t Dualmatic use the branding sooner than circa 1970 (there was a gap between the end of Free-Lock in 1959 and the re-emergence of the brand circa late 1960s or early 1970s).

This document suggests there were seven different models of Free-Lock hubs, which may explain why we have seen several different types of later-model Free-Lock hub styles. Given the emphasis on “A Quality Division”, this document *might* hint that Dualmatic was using the Free-Lock brand as a premium hub, perhaps hoping to clear more profit from them?

The fact that the top of the hub shows no branding suggests these instructions were intended to be distributed across multiple brands of Dualmatic-built hubs.

The date of the newspaper used to wrap the hubs is December 4, 1973: