Can anyone ID these old cabinets?

In article <CANij+dfiAS_TypWhGhzhq_v7nQrxx7WoFEzDJED2TJkV88LGqQ at mail.gmail.com>, William Donzelli <wdonzelli at gmail.com> writes: I worked as a projectionist at the State Theatre in Newark, DE, around 1984. They used 35mm reels and two carbon arc projectors with a manually triggered changeover system. Even then, most new theatres used a platter system where all the reels of film were spliced into a single continuous film and spooled onto a large diameter platter. This meant you could basically automate the projection of the movie as all you had to do was start the projector and let the entire film run through. No need for a projectionist, just have someone go up and press a button to start the movie. With the reel system, you did a changeover between reels about every 20 minutes. Ever notice that little white dot in the upper right hand corner of a movie? That is the changeover indicator to the projectionist. There are two dots 7 seconds apart. When the first dot appears you start the motor on the 2nd projector to get it up to speed. When the second dot appears you press a button that lowers a gate to block the current projector's image and raises a gate to show the new projector's image. This happens fast enough and in time with the film that as a viewer, you don't even notice it (when it's done right). In between changeovers you would be rewinding the just-finished reel and threading the next reel and doing any projector adjustments. All this mucking about with the reels every 20 minutes means that when you're a projectionist in a system like this, you never actually see the movie you're projecting, just 5-10 minute chunks every 20 minutes or so. The cabinets shown in the picture would be used to store the movie reels, not for shipment, but for projecting. The reels were shipped in large steel cases that held at most two reels. These cases were quite heavy when loaded. When a movie arrived, you'd unpack it from the cases and check the film for integrity (you don't want it breaking when you project it for the first time), applying any necessary splicing patch tape to compensate for wear and tear on the film and sprocket holes. After doing this, you place the reels in these cabinets in projection order. You would dedicate each one of these cabinets to one of the movies. Since reels were only 20 minutes long, a 2 1/2 hr movie could easily span 7 or 8 reels. We had cabinets very similar to these at the State Theatre. In the picture, the cabinets are actually on their side. The reels would have been stored left-to-right and the door is connected to a round piece of metal that causes the reel to roll out when you open the door. You can see just barely this in the picture for the one door that is open. -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://ComputerGraphicsMuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://LegalizeAdulthood.wordpress.com>