The keys stick and don't always make a mark on the paper
I have an underwood typewriter and when i press the letters some hit the ribbon with ease other are stiff and get stuck so don't make a mark. I don't know where to oil and which joints...need help or a diagram!!!
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Re: The keys stick and don't always make a mark on the...
I assume this is a type bar machine. If so first put some light oil (WD40 works well) along the segment where the type bars are swung and type to work the oil in. If this an electric machine be careful not to much oil.
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There is a carriage shifting screw on both sides of the typewriter. You will recognize this because it is a screw that has a big bump head with felt on it. It is being hit when you hit that shift lever. You will have to loosen the securing nut first before adjusting.
Remove the top cover, remove ribbon spools, press a key and grab it with your finger, note the mechanical motions toward the ribbon advancer movement, usually found near the center of the ribbon holder or could be on the outside edge also, there is a reverser mechanism also that should be fully to one side or the other, it switches the ribbon direction to avoid a 'dead end' while typing. By moving the key toward the platen and away it should drive the ribbon mount spool by a shifting drive lever of some kind. If you cannot resolve this issue, take it to a rare typewriter repair shop, it is too hard to explain in this format, and mechanical skills are involved, hope you have them, ;)
Really? An Underwood typewriter?
First, do you have a replacement ribbon that is not dried out? Does the ribbon come on one spool or two?
If the typewriter already has a ribbon installed, it is a simple matter of noting the path the current ribbon follows, and which way the ribbon winds onto the spools. Then install the new ribbon following exactly the same threading path. If there is not already a ribbon installed, then it is a little more complicated, and it will depend on your spatial relationship visualization skills.
1. Type a few letters on the typewriter, and take note of which way the spools turn.
2. Mount the two new spools containing the new ribbon so that the full spool will supply (unwind), and the empty spool will take-up (wind) the ribbon.
3. Thread the ribbon through all of the guides in the threading path - there are probably about 6-8 guides that the ribbon has to go through. The most important guides are the ones that carry the ribbon in front of the typeface elements as they strike the paper. But equally important are the guides that monitor the tension of the ribbon - they will cause the spool advance mechanism to reverse the ribbon take-up direction when the ribbon reaches the end of travel.
the mark you are seeing is the print hammer hitting the paper. remove the ribbon. corr. tape & print wheel. turn on the typewriter. close cover let it home it's self. open cover put in print wheel. close cover let it nome. put in ribbon close cover. try typing if marks are still ther. you will need a new print wheel. if working then put in corr. tape or if you are better at spelling then me you will not need it
Check to be sure that the correction tape is in properly and tight. Then make sure that the ribbon (and correction tape) are between the two metal "fingers" and the cardholder (which is the metal thing that holds the paper close to the platen right in front of the ribbon) Is the ribbon moving? You should be able to hold the ribbon up and see each letter on the ribbon. Also make sure the printhammer is locked forward. You should not be able to just reach in and take the printwheel out without the ribbon in place. The only other thing I can think of, is the ribbon got twisted some how. The dull side should be towards the paper.
You may need a ribbon motor or motor board, however on the older wheelwriters sometimes the gear mesh gets sloppy and gears jam tooth for tooth. Try moving the ribbon lift gear/cam on rt. side of the carrier by hand with the machine off if it won't move that's the trouble. Wiggle it back and forth and it may free up.