Fixed my loose window
Finally found what I had been looking for. I remember the product, and could visualize it, but didn't know what it was called. Oddly, it popped up under "Window Springs". It's not a spring as you would think, but rather a spring tension metal. My old castle has several double hung wooden windows that are loose, and rattle in the frame. This item simply is attached in the channel between the window pane frame and the wall frame. The spring tension tightens it up nicely, No rattles, and if the window is loose enough to fall down, it helps keep them up. Having a description, and maker, helped the search. They were spotted on ebay, for $12. (nein). Saw Home Depot had them in stock, for $3.xx. Obvious choice. This little doo-dad may be a simple solution to your window problem. We old house fixers need something easy now and then.