J.J. Ryan Toolworks was in Southington,Ct, apparently across the street from PEXTO.
A newspaper article mentions a fire at the Ryan plant, guards at the Pexto plant called the fire department....(Mar 1964)
Seems to be the J J Ryan Tool Co by 1970..
More recently, J J Ryan Corp, plantsville
Can't trace before that, don't know if J.J.Ryan & Co of Chicago is the same or not...