Niels; 
Welcome to the forum!  Fixing the flattened feed roller is simple enough: once you get it removed (you may have to bend the tabs that hold the roller in place), take it to an auto parts store and match the rubber to a length of hose you can purchase there.  It's a matter of removing the old rubber from the shaft and sliding the hose on to replace it.  There are a number of videos on youtube showing how this is done.  For the ribbon feed, check the entire mechanism, from the spool holders and the drive gears to the ribbon vibrator ( the device that holds the ribbon for the type bar to hit it accurately).  Usually it is a matter of dirt, grease, or a lack of lubrication (but only use a little!), and beyond that, there could be something out of adjustment.  Try and check the typewriter database (typewriterdatabase.com) under the manuals section, and they may have a service manual for the Travel-Riter (yours looks like it's from the '60's).  Be patient and don't force anything, and you should solve the issue.

Glad it all worked out for you; now you get to actually type--my Quiet DeLuxe is waiting for a platen.  Should be here sometime next week.

Hello;
If I understand you correctly, you would like to remove the paper bail rollers from the bail rod which rests over the platen.  It's really straightforward; the rod has four screws, one on each end on the side, and two in the front, one on each end.  just remove the screws on one end so that the rod is loose, and you can slide the rollers off the rod.  Be careful of the flat springs inside both rollers, they are small and can get away from you.  After they are off, you can replace the rubber.
I'm not sure about the platen; Quiet Deluxe models have two rubber sleeves, so it is more difficult to cover (and more expensive).  You can find instructions on how to remove the platen on the Typewriter Database (http://typewriterdatabase.com) in the Service Manual under Portable Typewriters.  I have a 1947 model and am in the process of getting the platen recovered professionally because mine had a separated cover and a cracked core.
Good luck!

Well, I didn't think this was going to happen; was out yesterday trying to sell some surplus yard tools and wound up at the local thrift shop.  Saw an electric typewriter on the back shelf, and since it was the first one I've seen since starting to look, went over to check it out.  It's a Smith Corona Electra 220, and the carriage made a grinding noise when I tried to move it back and forth--but since it was only $7.00, I bought it.  Got it home and found out one of the keys (the "n") was completely disconnected and the linkage to the typebar was bent.  Got that fixed and the carriage was okay, too.  the back cover was out of position and pushing against the back carriage rail.  Once that was fixed and I put in a good ribbon, it was working perfectly.  This must be what it means to be "bitten."
Anyway, I don't know anything about this typewriter; the serial # is 6ELO 133921 and doesn't match anything in the Typewriter Database.  There aren't many listed in the Database, and I have no manual.  I'm assuming that it is from the late '60's, but I don't know for sure.  It's filthy and really needs disassembling so it can be properly cleaned, but I'm not going to take it apart without having something to go by.  It's a great typer, if you like electrics--I still prefer the manuals' touch.  Any suggestions or info?
Thanks.

Hey, all; my name is Rich and I'm a retired printer living in Metro East St. Louis (Illinois side).  My interest in typing goes back about 50 years when I was a kid watching my grandmother typing on her kitchen table--correspondence to friends, congressmen, TV commentators, and then poetry and stories about the family; her genealogy research got me started on my own family tree search.  I inherited that typewriter, a Royal standard portable #0-412248 made in 1934.  I kept it in storage until I decided to return to school in the 80's and taught myself how to type on that machine.  It went back into storage again (computers were becoming all the rage) until quite recently--a couple of months, when I gave my uncle's Corona 3 (another inheritance) to my nephew's wife, who is a history teacher in Michigan.  That Corona was carried through the Argonne Forest in 1918, and she uses it to help teach the story of doughboys in WWI.  She and my nephew were so fascinated by the machine that I decided to look into any interest in typewriters, and I found this forum among other sites.  I'm a newcomer--I have Gram's Royal, my mother's Quiet Deluxe (1947), and any new ones I come across.  I love to tinker and fix old machinery, and my preferences so far in Typewriters is for portables in the 30's -50's.  Am also looking at Royal and Smith Corona standards--40's and 50's.  Looking to learn all I can, so will be asking lots of questions.  By the way, I have a little knowledge about paper and its usage, having 40+ years in printing, including 20+ years in letterpress and typesetting.  Guess that makes me something of a relic.