Posted by Jerry in Idaho [172.68.174.19] on Friday, January 19, 2018 at 18:37:05 :
In Reply to: What kind of hubs are those? posted by Greg Coffin [172.68.34.115] on Friday, January 19, 2018 at 10:45:10 :
They could be the old style Dual-Matic hubs. Some had two slotted discs on the face of the hub that you turned to engage. Others had two levers that pivoted 180 (I think) degrees.
Google Dual-Matic for some pictures.