R.H. wrote:

Just posted some new photos:

http://puzzlephotos.blogspot.com/
272 looks like a device that one could screw to hold a window closed, I
remember owning or using one similar to that (but covered in a cream
colored paint instead of shiny like that one)
274 looks like its designed to spray something (insect spray? paint? dont know)
276 looks like a shutter (to an old camera? film equipment? I dont know)
277 looks like cutting blades from something like a garbage disposal or
something.