The attached were manufacturered by Pacific Industries who no longer exist
A home owner from Sacramento says:
August 10, 2016
These parts have become worn over the last decade and it appears that you may have produced similar parts. I am looking for a way in order replacement parts as well as get instructions for keeping them oiled (I used bike lubricant on these).
Paul from SWISCO responded:
August 11, 2016
Hello! While Pacific Industries are no longer in business, our 26-089P has been known to work on their windows. However, you will need to drill a small hole for the lower inside screw located at the top of the side of the window frame.