A contractor from Kansas City MO says:
September 30, 2015
Hi. The bottom rail of the window completely rotted out and rusted the crank arm and the guide bracket that attaches to the window sill so that they are inseparable. Please ID a kit for me to replace all three parts in the photo.
Tom from SWISCO responded:
October 1, 2015
We don't have an exact match for this hinge, but handy-people have used our 36-013-10 to replace it in the past. Let me know if this can work for you.