Just don’t make filament supporting bridges like they used to. This was a 2Kw/120v lamp that had it’s filament fall while still hot which melted thru quartz glass. Luckily as opposed to the filament in melting thru glass reaching air than the lamp exploding, it would seem the filament wire broke shortly before this and cut off current to the rest of the lamp. Finally, my favorite of the day. The amazing “ParCo” adjustable Hack “O” Matic fixture yoke for when a single bar of steel or aluminum is too expensive and difficult to make into a yoke by those charged with making gear work safely. As I was told, “it worked didn’t it, 20 years later it’s still together.” Cut apart what parts you need from a rock and roll par can yokes and just rivet them together to make a much larger one. Given of course no rivets were in stock long enough to function properly in binding the surfaces like a normal rivet, they just put four rivets per section - two from each side on each lap joint seam. Gee, this person was right, it did function in that only a few of the seams were loose, bent or sort of out of alignment. You will note the bend also with a hole centered at the corner in further reducing the strength of the stap. But have no fears, they will have also put a safety cable around the yoke.