reply to u/VampySiren on https://reddit.com/r/typewriters/comments/1m7yz1m/silveretti_ribbon_vibrator_getting_stuck_in/

On most machines, the ribbon vibrator is meant to slide up and down freely and it typically returns with just gravity. 9 times out of 10 the reason that the vibrator doesn't go back down because it's either dirty/gummy or has been slightly bent. Put a few drops of mineral spirits or similar degreaser on it and give it a light scrub with a toothbrush. If it doesn't move freely after a round or two of this, is it bent and hanging on something? If so, bend it so that it moves freely.

The other 1 of 10 times, it's the ribbon that's been installed correctly.

https://www.reddit.com/r/typewriters/comments/1jn08u7/royal_vibrator_spring_help_how_does_this_attach/

Kmart 300 Deluxe 12 Typewriter by [[Joe Van Cleave]]

Because of the geometry of the JP-7's ribbon vibrator, which hinges from the right rather from the middle, the ribbon can rub against the paper/platen. To remedy this, one can mis-thread the left side to keep the ribbon away from the paper.

There are generally only a few configurations for ribbon vibrators with respect to ribbon threading, look at a few manuals here and surely yours will be covered by one: https://site.xavier.edu/polt/typewriters/tw-manuals.html

Typically the rule is that the ribbon sits closer to the paper at the typing point than any piece of the vibrator and is then threaded through the arms of the vibrator. From there it often goes through holders at the ribbon cup and then into the spool.

Smith Corona Typewriter Ribbon Vibrator Bind, Lift Sticking Up, Forming/Adjusting Process by [[Phoenix Typewriter]]

Part 4: COMPLETE Olympia SM3 Service and Repair Series: STICKY RIBBON LIFTER by [[The HotRod Typewriter Co.]]

The universal bar lifts the ribbon vibrator.

Adjustment points to adjust the ribbon lift heights for issues with red/black on bichrome use.

Maximum travel of the universal bar adjustment screws on crossbar that attaches to springs. timestamp 5:29

Screws at the ends of the cross bar which are attached to the key springs can be adjusted slightly to provide for heavier or lighter touch control. Timestamp 6:07