OregonJim wrote:
I'm guessing from their location that they were part of a shipping bracket that the dealer forgot to remove. There was probably a third piece that spanned the two brackets across the type basket to prevent the typebars from hitting the platen while in transit. Just a guess.
On second thought, the type bars aren't really free-moving in an electric machine, so there would be no need to protect them or the platen.
On the other hand, that big black piece over the pulley looks like a "lawyer request". In other words, somebody got their finger caught in the belt while messing with the ribbon (with the power on), and likely tried to sue Smith-Corona. Then the SC lawyers told them to quickly make the machine more idiot-proof, thus the hastily added bracket. Again, just a guess.