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I have just been reading about Fairey Swordfish, aeroplanes used by the Fleet Air Arm in WWII, and how they had an extra fuel tank fitted, but on take off the fuel used to slop out of the air hole in the top, all over the observer. So to rectify the problem, a cork was placed in the air hole and the observer pulled out the cork with a piece of string, once the plane was on level flight.
Well today I was eminded of this when replacing xenon lamps in the projectors at work. And to keep the side of the projector open during this potentially explosive process, we used a bit of wire wrapped around the catch and tied to the vent on the back of the projector.
Similarly, when we interlock two projctors and run a single film from one, up the wall, across the ceiling and to a second projector - running the same film in two screens, there is not enough tension to keep the film tight against the automation sensors. So an elastic band is employed.
Sometimes low tech solutions work best.
Well today I was eminded of this when replacing xenon lamps in the projectors at work. And to keep the side of the projector open during this potentially explosive process, we used a bit of wire wrapped around the catch and tied to the vent on the back of the projector.
Similarly, when we interlock two projctors and run a single film from one, up the wall, across the ceiling and to a second projector - running the same film in two screens, there is not enough tension to keep the film tight against the automation sensors. So an elastic band is employed.
Sometimes low tech solutions work best.