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Location DB > United States > Missouri > Kansas City > AMC Empire 4 (Main Street Theater) > peterbillionaire's gallery > empire theater 178.jpg 29 / 40   empire theater 178.jpg Description this electrical machinery was next to the original projection room; purpose??? Controls Return to Main Location Page Return to Gallery Overview Edit this Gallery Edit this Picture Subscribe this Picture Comments Posted by Raticus 9/29/2005 8:21 PM | remove   These machines are generators (driven by electric motors) that created the current for the lamp house on the projector. These lamp houses (back then) used what was called "carbon arc" for the light that projected the image on the screen. Two carbon rods were set close to each other and created an arc similar to a welding machine. The rods were mechanically moved closer together as they burned to keep the light and the arc at the correct level. These units would be the generators that created the high amp currrent needed to burn the rods. That's where you got the light for the movie. Rarely, but occasionally, you will still see an old theater using this light source. Almost all now use what is called a Xenon bulb. I had the privilege of operating the projectors in a drive in once when I was about 18 yrs old that had these old carbon arc machines still in operation. The drive in was showing X-rated pictures, but these old beasts kept me hopping so much I didn't even get to see the flick. Dammit. Posted by peterbillionaire 10/1/2005 2:14 AM | remove   excellent info; thanks Raticus porno drive-ins -- yeah! Posted by youthsonic 10/7/2005 3:15 AM | remove   damn.... 20 foot boobies.... Drool! Posted by RabidMonkey 5/26/2006 8:39 AM | remove   Carbon arc is rendered obsolete these days to my knowledge due to the fact that they are very heat intensive and burn film if a jam or minor fault occurs. They're extremely bright, though. If you'd like to add a comment, please login or register. All content and images copyright © 2002-2024 UER.CA and respective creators. Graphical Design by Crossfire. To contact webmaster, or click to email with problems or other questions about this site: UER CONTACT View Terms of Service | View Privacy Policy | Server colocation provided by Beanfield This page was generated for you in 562 milliseconds. Since June 23, 2002, a total of 740825877 pages have been generated.