There are several steps that need to be done properly in order to thread an 8mm movie projector. I have included a link that shows how you can thread it properly: http://www.ehow.com/how_2079814_thread-movie-projector.html.
www.tias.com and www.ebay.com both have 8mm movie projectors for sale. Additionally, you may also be able to find 8mm movie projectors on www.craigslist.com.
super8 works on super8 and 8mm on 8mm projectors, some projectors do have a switch to go from one to another
Try ebay.com
You can purchase an 8mm projector from a variety of places. You can try your local audio/visual store, or specialist electronics store. Failing that you can try eBay or Amazon.
the revere standard 8mm projector was manufactured by the revere company of chicago, illinois.
Either use an 8mm projector to view them on the 'big screen' - or - get them converted to DVDs or VHS video.
Load the film and press run
A site that seems to be good for rentals is www.meetingtomorrow.com
There are several electronic stores that may sell 8mm movie projectors. Store like Bestbuy are also some good options. Check out craigslist.com and search in your city or one close to you. Another site you can check is e-bay and just type in your zip code.
ATS Rental allows one to rent a film projector to use 8mm or 16mm film on them. The 8mm film projector costs $34 for one business day and the 16mm costs the same as well. This is a good idea for grandparents who may have old films to show the younger generation. Also a collector who make found movie film reels.
Search the model on youtube, there's a great video there. be advised that you have to thread the film direct and out from behind the lens to rewind
The movie projector: The "lumiere" brothers (French). As for the phonograph, I dont know.