teletype model 43 value

The ribbon cartridge is fitted on the right-hand side plate of the printer chassis, it's held down by a magnet on the chassis that attracts a plate on the cartrdige. There's a loop of ribbon that runs from the cartidge round rollers on the chassis and on the carriage (and of course the ribbron runs across the front of the printhead itself). Some of those rollers have 1-way clutches in them -- when the carriaye is moving left-right (printing direction), the ribbon is held fixed relative to the chassis by the roollers on the chassis being locked by their clutches, but the ones of hte carriage freewheeling. But when the carriage moves right-left, the ribbon is held fixed relative ot the carriage, this time the rollers on the chassis freewheel and the ones o nthe carriage are locked, so the ribbon gets wound on a bit. That is the only ribbon feed mechanism in the machine. -tony