I misidentified the lever action hand brakes in Bruce Griffin’s original inquiry posted 1/20/19.
On closer examination they are clearly not Universal Type 5790-A devices as I suggested. They share a stirrup handle but beyond that the action is entirely different.
Thanks for correcting me.
Bye the way, I posted my response on 1/21 and it did not show up until 1/29. Not very timely.
