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70790Re: [TYPEWRITERS] advancing issue on an Underwood #5 201931

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  • Richard Knoppow
    Dec 11, 2017
      There are a number of typewriter repair manuals there. The No. 5 was
      an extremely popular machine and was made for decades. There is pretty
      complete information about them on this site. I don't know what has
      happened to your machine but its not difficult to take the carriage off.
      The "platen" is the rubber roller that supports the paper. It is
      held in a mechanism called the "carriage" which is what moves back and
      forth. On the No.5 the carriage has two parts, one of which is used to
      move the paper up and down for shifting. The drawings in the repair
      manuals will help to clarify the assembly.

      On 12/11/2017 3:23 PM, Robert Simons simons-r@...
      [TYPEWRITERS] wrote:
      > I have an Underwood Standard #5 and it is older than most I see posted
      > elsewhere. The issue is the platen won’t move left, the mainspring is
      > fine and has enough tension, the strap is still connected to the platen.
      > When we removed the platen assembly, we saw the ‘gears’ that work to
      > move the platen. The large gear seems to have a planetary gear inside
      > that lets the small gear free wheel to the right, but by the mainspring
      > it makes the large gear allow one space at a time.  This unit has no
      > backspace button or lever. The large gear has a bent pin with a spring
      > attached that goes to an arm. Back, nearly out of sight on the left of
      > the large gear is an arm that lays nearly parallel to the platen, and it
      > has a second arm the same size and is captured near the gear. It can
      > move freely some, but it seem like it is missing a spring, but I don’t
      > know where it should be anchored.
      > I cannot take pictures at the moment, I hope someone with an old #5
      > might know right off what I need to do.
      > Thanks for your attention,
      > Rob Simons
      > New to the group.

      Richard Knoppow
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