Jalousie Like Windows

Hi,
I am in the process of restoring and old cottage. I've been repairing some of the window mechanism but some have been lost.Rods come into the gear box on each side with a center crank that opens and closes the window.Have you seen such a thing? I haven't found any markings on the window to identify a manifacturer. Thanks you for helping me out.
Steve

Thanks Tom --- that's the one. Just ordered a bunch a lot cheaper than new windows :). Really appreciate you getting back to me.